{"id":3714,"date":"2026-05-26T01:10:28","date_gmt":"2026-05-26T06:10:28","guid":{"rendered":"https:\/\/www.emag.com\/blog\/en\/?p=3714"},"modified":"2026-05-26T01:10:28","modified_gmt":"2026-05-26T06:10:28","slug":"manufacturing-of-ball-tracks-in-joint-housings","status":"publish","type":"post","link":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/","title":{"rendered":"Manufacturing of ball tracks in joint housings: Precision machining with VSC technology"},"content":{"rendered":"<p><strong><span class=\"TrackedChange SCXW112936915 BCX0\"><span class=\"TextRun SCXW112936915 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW112936915 BCX0\">Joint\u00a0<\/span><span class=\"NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW112936915 BCX0\">housings are<\/span><span class=\"NormalTextRun SCXW112936915 BCX0\">\u00a0among the most technically demanding components in automotive drivetrains. Together with inner races, ball cages, and outer races, they form the basis for\u00a0<\/span><\/span><\/span><span class=\"TrackedChange SCXW112936915 BCX0\"><span class=\"TextRun SCXW112936915 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW112936915 BCX0\">CV<\/span><\/span><\/span><span class=\"TrackedChange SCXW112936915 BCX0\"><span class=\"TextRun SCXW112936915 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW112936915 BCX0\">\u00a0joints, which enable uniform power transmission between two axles\u2014even with varying angles and\u00a0<\/span><span class=\"NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW112936915 BCX0\">length<\/span><span class=\"NormalTextRun SCXW112936915 BCX0\">\u00a0compensation. The manufacturing quality of the ball tracks in these components\u00a0<\/span><\/span><\/span><span class=\"TrackedChange SCXW112936915 BCX0\"><span class=\"TextRun SCXW112936915 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW112936915 BCX0\">d<\/span><\/span><\/span><span class=\"TrackedChange SCXW112936915 BCX0\"><span class=\"TextRun SCXW112936915 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW112936915 BCX0\">irectly\u00a0<\/span><\/span><\/span><span class=\"TrackedChange SCXW112936915 BCX0\"><span class=\"TextRun SCXW112936915 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW112936915 BCX0\">determines<\/span><span class=\"NormalTextRun SCXW112936915 BCX0\">\u00a0the functionality, smoothness, and service life of the entire drivetrain.<\/span><\/span><\/span><span class=\"EOP Selected SCXW112936915 BCX0\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/strong><!--more--><\/p>\n<h3><strong>Technical\u00a0requirements for\u00a0ball\u00a0raceway\u00a0machining<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The machining of ball tracks in joint housings and inner races places the highest demands on machine tools and manufacturing processes:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li><b><span data-contrast=\"auto\">Geometric precision:\u00a0<\/span><\/b><span data-contrast=\"auto\">Ball raceways must be\u00a0<\/span><span data-contrast=\"auto\">held\u00a0<\/span><span data-contrast=\"auto\">to tight tolerances to ensure low-backlash and smooth rolling of the balls.\u00a0<\/span><span data-contrast=\"auto\">Surface finish\u00a0is\u00a0just\u00a0as\u00a0critical\u00a0as\u00a0dimensional\u00a0accuracy.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Complex raceway geometries:\u00a0<\/span><\/b><span data-contrast=\"auto\">Depending on the joint type,\u00a0<\/span><span data-contrast=\"auto\">ball raceways<\/span><span data-contrast=\"auto\">\u00a0may be straight or angled. In CV joints, raceways are\u00a0<\/span><span data-contrast=\"auto\">positioned<\/span><span data-contrast=\"auto\">\u00a0at defined angles that govern force transmission and motion behavior.<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">Achieving\u00a0<\/span><span data-contrast=\"auto\">these geometries requires high-precision multi-axis machining,\u00a0<\/span><span data-contrast=\"auto\">with<\/span><span data-contrast=\"auto\">\u00a0angles, positions, and shapes of the raceways<\/span><span data-contrast=\"auto\">\u00a0precisely coordinated\u00a0<\/span><span data-contrast=\"auto\">to<\/span><span data-contrast=\"auto\">\u00a0one another.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Hard and soft machining\u00a0of the internal geometry:\u00a0<\/span><\/b><span data-contrast=\"auto\">The manufacturing process typically involves soft machining\u00a0<\/span><span data-contrast=\"auto\">before<\/span><span data-contrast=\"auto\">\u00a0hardening, followed by hard machining. Some manufacturers\u00a0<\/span><span data-contrast=\"auto\">use high-precision forged workpieces in which<\/span><span data-contrast=\"auto\">\u00a0the ball track<\/span><span data-contrast=\"auto\">\u00a0geometry<\/span><span data-contrast=\"auto\">\u00a0is\u00a0<\/span><span data-contrast=\"auto\">formed so\u00a0<\/span><span data-contrast=\"auto\">accurately\u00a0<\/span><span data-contrast=\"auto\">during\u00a0<\/span><span data-contrast=\"auto\">forging<\/span><span data-contrast=\"auto\">\u00a0that\u00a0<\/span><span data-contrast=\"auto\">soft machining\u00a0<\/span><span data-contrast=\"auto\">can be omitted.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Material-specific challenges:\u00a0<\/span><\/b><span data-contrast=\"auto\">Joint housings are manufactured from high-strength steels that\u00a0<\/span><span data-contrast=\"auto\">reach<\/span><span data-contrast=\"auto\">\u00a060 HRC and higher after hardening. In hard machining, the remaining stock is\u00a0very small, typically only about 0.2 mm per radius, resulting in comparatively low machining forces.\u00a0<\/span><span data-contrast=\"auto\">Even<\/span><span data-contrast=\"auto\">\u00a0so<\/span><span data-contrast=\"auto\">, high machine stability, precision axis systems, and high-performance drives are\u00a0required\u00a0to reliably ensure dimensional accuracy, surface finish, and process reliability.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/li>\n<\/ul>\n<div id=\"attachment_3720\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3720\" class=\"size-full wp-image-3720\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px.jpg\" alt=\"Inner races, ball cages, and outer races of a CV joint \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Inner-races-ball-cages-and-outer-races-_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3720\" class=\"wp-caption-text\">Components of a CV joint: inner races, ball cages, and outer races. The precision machining of the ball raceways is crucial for smooth operation and torque transmission.<\/p><\/div>\n<h3><strong>Design and development of joint geometries for electric drives<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The\u00a0<\/span><span data-contrast=\"auto\">rise<\/span><span data-contrast=\"auto\">\u00a0of electric drive systems is fundamentally changing the requirements for constant-velocity joints. Electric motors generate significantly higher torques than internal combustion engines, which directly\u00a0<\/span><span data-contrast=\"auto\">increases<\/span><span data-contrast=\"auto\">\u00a0mechanical stress<\/span><span data-contrast=\"auto\">\u00a0on the joints. At the same time, the absence of\u00a0<\/span><span data-contrast=\"auto\">engine\u00a0<\/span><span data-contrast=\"auto\">background noise<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">makes<\/span><span data-contrast=\"auto\">\u00a0mechanical<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">drivetain<\/span><span data-contrast=\"auto\">\u00a0noise<\/span><span data-contrast=\"auto\">\u00a0more\u00a0<\/span><span data-contrast=\"auto\">perceptible<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">These\u00a0<\/span><span data-contrast=\"auto\">conditions are\u00a0<\/span><span data-contrast=\"auto\">driving<\/span><span data-contrast=\"auto\">\u00a0a shift from tripod joints to double-offset joints, which<\/span><span data-contrast=\"auto\">\u00a0transmit\u00a0higher torques and\u00a0<\/span><span data-contrast=\"auto\">deliver\u00a0<\/span><span data-contrast=\"auto\">smoother operation.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"attachment_3718\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3718\" class=\"size-full wp-image-3718\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px.jpg\" alt=\"Cross-section model of a tripod joint with rollers and raceways for length compensation in the drivetrain \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Cross-section-of-a-tripod-joint-_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3718\" class=\"wp-caption-text\">Cross-sectional model of a tripod joint with visible rollers and raceways. The design enables length compensation and torque transmission in the drivetrain.<\/p><\/div>\n<hr \/>\n<h3><strong>Process Chain: From\u00a0raw-part to\u00a0precision\u00a0ball\u00a0raceway<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The production of ball raceways in joint housings and inner races does not follow a\u00a0<\/span><span data-contrast=\"auto\">single, standardized<\/span><span data-contrast=\"auto\">\u00a0process chain. In practice,<\/span><span data-contrast=\"auto\">\u00a0sequences differ significantly from customer to customer and can even vary within a single corporate group. Reasons<\/span><span data-contrast=\"auto\">\u00a0include different raw part concepts, levels of in-house production, quality requirements, batch<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">s<\/span><span data-contrast=\"auto\">izes<\/span><span data-contrast=\"auto\">, and existing machine and automation structures.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">EMAG\u00a0<\/span><span data-contrast=\"auto\">accounts<\/span><span data-contrast=\"auto\">\u00a0for\u00a0<\/span><span data-contrast=\"auto\">this diversity<\/span><span data-contrast=\"auto\">\u00a0by designing<\/span><span data-contrast=\"auto\">\u00a0modular, flexible<\/span><span data-contrast=\"auto\">\u00a0machining solutions<\/span><span data-contrast=\"auto\">. The individual process steps\u2014from rough machining to hard machining of the ball tracks\u2014can be\u00a0used\u00a0as stand-alone machines or\u00a0integrated\u00a0into\u00a0new or\u00a0existing\u00a0production lines, depending on requirements. This creates a customized, reliable,<\/span><span data-contrast=\"auto\">\u00a0precision machining environment\u00a0<\/span><span data-contrast=\"auto\">tai<\/span><span data-contrast=\"auto\">lored to<\/span><span data-contrast=\"auto\">\u00a0each customer<\/span><span data-contrast=\"auto\">\u2019s<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">specific technical and economic conditions.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><span style=\"color: #003366\"><b>1. Starting point: The <\/b><b>raw-parts<\/b><\/span><\/h4>\n<p><span data-contrast=\"auto\">Depending on the manufacturer, ball joint housings and inner races are forged, rolled, or pre-machined from heat-treated steel. The\u00a0initial\u00a0tolerances are\u00a0relatively large, and the inner contour does not yet feature functional raceway geometry. The position of the reference surfaces is critical at this stage, as they form the basis for\u00a0subsequent\u00a0<\/span><span data-contrast=\"auto\">complete-machining<\/span><span data-contrast=\"auto\">.<\/span><\/p>\n<h4><span style=\"color: #003366\">2. <b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">Soft<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">m<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">achining\u00a0<\/b><\/span><\/h4>\n<h5>2.1 Soft turning of the\u00a0internal geometry<\/h5>\n<p><span data-contrast=\"auto\">Using the VSC 315 KBU or the VSC 315 DUO KBU, all relevant turning contours are first produced:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"auto\">Reference\u00a0diameters<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">end\u00a0faces<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:200,&quot;335559740&quot;:276}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">This turning operation is performed in the same setup in which the raceway milling processes will later take place. This creates precision positional references that\u00a0eliminate\u00a0critical sources of error in the process chain.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"attachment_3722\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3722\" class=\"size-full wp-image-3722\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px.jpg\" alt=\"Soft turning of the internal geometry of a joint housing to prepare for subsequent ball raceway machining. \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Soft-turning-of-the-internal-geometry-_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3722\" class=\"wp-caption-text\">During soft turning, the internal geometry of the joint housing is machined with precision. This step establishes the positional and geometric foundations for the subsequent milling of the ball raceways.<\/p><\/div>\n<h5>2.2\u00a0Pre-milling\u00a0of the ball raceway (soft milling)<\/h5>\n<p><span data-contrast=\"auto\">Following<\/span><span data-contrast=\"auto\">\u00a0preparatory turning operations,<\/span><span data-contrast=\"auto\">\u00a0ball raceways are<\/span><span data-contrast=\"auto\">\u00a0pre-mill<\/span><span data-contrast=\"auto\">ed<\/span><span data-contrast=\"auto\">\u00a0to\u00a0<\/span><span data-contrast=\"auto\">establish<\/span><span data-contrast=\"auto\">\u00a0the foundation for\u00a0subsequent\u00a0hard machining. For machining inclined ball raceways, the Y-axis is<\/span><span data-contrast=\"auto\">\u00a0critical, as it enables precision positioning of the milling spindle\u00a0relative\u00a0to the workpiece axis. Straight ball raceways can be machined without the Y-axis.<\/span><\/p>\n<h4><span style=\"color: #003366\">3. <b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">Heat<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">t<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">reatment \u2013 Hardening of<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">f<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">unctional\u00a0<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">s<\/b><b style=\"font-family: Raleway, sans-serif;font-size: 18px;letter-spacing: 0px\">urfaces<\/b><span style=\"font-family: Raleway, sans-serif;font-size: 18px;font-weight: bold;letter-spacing: 0px\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/span><\/h4>\n<p><span data-contrast=\"auto\">After soft machining, the joint housings, inner races, and outer races undergo a hardening process<\/span><span data-contrast=\"auto\">\u00a0crucial\u00a0<\/span><span data-contrast=\"auto\">to component<\/span><span data-contrast=\"auto\">\u00a0functionality and service life<\/span><span data-contrast=\"auto\">. For\u00a0<\/span><span data-contrast=\"auto\">CV joint\u00a0<\/span><span data-contrast=\"auto\">components<\/span><span data-contrast=\"auto\">, case\u00a0hardening is\u00a0predominantly\u00a0used\u2014a process that selectively enriches the surface layer<\/span><span data-contrast=\"auto\">\u00a0with carbon and then hardens it.<\/span><\/p>\n<h4><span style=\"color: #003366\"><b>4. Hard machining \u2013 Finishing milling of the ball raceways<\/b><\/span><\/h4>\n<h5>4.1 Hard turning<\/h5>\n<p><span data-contrast=\"auto\">After hardening, hard turning of the cage raceway and hard milling of the ball raceways are performed in a single setup on the VSC 315 KBU,\u00a0VSC 315 DUO KBU\u00a0(KBU =\u00a0KugelBahnUniversell),\u00a0or the VSC 315 TWIN KBG (KugelBahnGerade). The machining sequence is variable:\u00a0<\/span><span data-contrast=\"auto\">hard milling of the ball raceways can be performed before or after<\/span><span data-contrast=\"auto\">\u00a0hard turning of the cage diameter.<\/span><span data-contrast=\"auto\">\u00a0The single setup ensures the required geometric alignment and reproducibly high\u00a0component\u00a0quality.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h5><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><b><span data-contrast=\"auto\">4.2 Hard\u00a0<\/span><\/b><b><span data-contrast=\"auto\">m<\/span><\/b><b><span data-contrast=\"auto\">illing of the\u00a0<\/span><\/b><b><span data-contrast=\"auto\">b<\/span><\/b><b><span data-contrast=\"auto\">all\u00a0<\/span><\/b><b><span data-contrast=\"auto\">s<\/span><\/b><b><span data-contrast=\"auto\">eats<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h5>\n<p><span data-contrast=\"auto\">After hard turning, the decisive machining step\u00a0for the production of\u00a0<\/span><span data-contrast=\"auto\">CV<\/span><span data-contrast=\"auto\">\u00a0joints\u00a0follows:\u00a0<\/span><span data-contrast=\"auto\">hard milling of the ball tracks. In this final process, the actual functional geometry is created, which later enables power transmission between the drive shaft and<\/span><span data-contrast=\"auto\">\u00a0axle while<\/span><span data-contrast=\"auto\">\u00a0providing angular and longitudinal compensation.\u00a0<\/span><span data-contrast=\"auto\">R<\/span><span data-contrast=\"auto\">equirements for this\u00a0<\/span><span data-contrast=\"auto\">step are exceptionally high, as even minimal deviations in dimensional accuracy or surface finish can impair\u00a0<\/span><span data-contrast=\"auto\">joint<\/span><span data-contrast=\"auto\">\u00a0function<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Hard machining of hardened steels with surface hardnesses\u00a0<\/span><span data-contrast=\"auto\">from 58 to 62 HRC\u00a0represents\u00a0one of the most demanding machining tasks. The hardened microstructure\u00a0<\/span><span data-contrast=\"auto\">offers<\/span><span data-contrast=\"auto\">\u00a0extremely high strength and wear resistance\u2014properties\u00a0<\/span><span data-contrast=\"auto\">desirable for joint function but challenging for machining<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">In hard milling,\u00a0<\/span><span data-contrast=\"auto\">material removal is\u00a0very small<\/span><span data-contrast=\"auto\">\u2014typically up to 0.2 mm<\/span><span data-contrast=\"auto\">. As a result,\u00a0<\/span><span data-contrast=\"auto\">cutting forces are significantly\u00a0<\/span><b><span data-contrast=\"auto\">lower than\u00a0<\/span><\/b><span data-contrast=\"auto\">in soft machining, where material removal depths of<\/span><span data-contrast=\"auto\">ten reach<\/span><span data-contrast=\"auto\">\u00a0several millimeters<\/span><span data-contrast=\"auto\">. Tool life is nevertheless limited, as even highly wear-resistant cutting materials such as cubic boron nitride (CBN) or ceramic materials are subject to continuous wear under high mechanical and thermal stresses. The thermal load on the cutting edge can reach temperatures exceeding 800 \u00b0C,\u00a0<\/span><span data-contrast=\"auto\">lead<\/span><span data-contrast=\"auto\">ing<\/span><span data-contrast=\"auto\">\u00a0to chemical wear.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Additional\u00a0<\/span><span data-contrast=\"auto\">challenges arise from the surface zone structure of case-hardened components. Hardness decreases continuously from the\u00a0<\/span><span data-contrast=\"auto\">surface\u00a0<\/span><span data-contrast=\"auto\">maximum\u00a0<\/span><span data-contrast=\"auto\">toward the softer core. This hardness gradient means<\/span><span data-contrast=\"auto\">\u00a0the tool passes through areas of varying hardness during a single cut, resulting in fluctuating cutting forces. Additionally, residual austenite content in the surface zone can lead to unexpected machining\u00a0<\/span><span data-contrast=\"auto\">be<\/span><span data-contrast=\"auto\">havior<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"attachment_3719\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3719\" class=\"size-full wp-image-3719\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px.jpg\" alt=\"Hard milling of ball tracks with precision B-axis positioning and a stable spindle. \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Hard-milling-of-ball-raceways_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3719\" class=\"wp-caption-text\">Hard milling produces the final ball raceways with high precision. The stable spindle and B-axis adjustment ensure consistent dimensional and positional accuracy.<\/p><\/div>\n<h4><span style=\"color: #003366\"><b>5. Automated <\/b><b>p<\/b><b>arts <\/b><b>f<\/b><b>low and\u00a0<\/b><b>p<\/b><b>rocess\u00a0<\/b><b>m<\/b><b>onitoring<\/b>\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">The cost-effective production of joint housings in high volumes requires more than<\/span><span data-contrast=\"auto\">\u00a0precision machining technology\u2014the key is the end-to-end automation of<\/span><span data-contrast=\"auto\">\u00a0material flow and seamless process monitoring. The VSC 315 KBU<\/span><span data-contrast=\"auto\">,\u00a0<\/span><span data-contrast=\"auto\">VSC 315 DUO KBU<\/span><span data-contrast=\"auto\">, and VSC 315 TWIN KBG\u00a0<\/span><span data-contrast=\"auto\">are designed as fully automated manufacturing cells capable of performing all process steps\u2014from raw part feeding through machining to finished part removal\u2014without manual intervention.<\/span><\/p>\n<hr \/>\n<h3><b><span data-contrast=\"auto\">Integrated pick-up automation:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">The heart of the automation system is the\u00a0<\/span><span data-contrast=\"auto\">built-in\u00a0<\/span><span data-contrast=\"auto\">pick-up automation. Unlike externally connected handling systems, this is\u00a0<\/span><span data-contrast=\"auto\">integrated<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">directly\u00a0<\/span><span data-contrast=\"auto\">into the machine<\/span><span data-contrast=\"auto\">\u00a0and forms a functional unit with the machining technology.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"attachment_3721\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3721\" class=\"size-full wp-image-3721\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px.jpg\" alt=\"Pick-up spindle for the automatic loading and unloading of workpieces in the VSC series. Precision and process reliability. \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Pick-up-automation-of-the-VSC-series-_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3721\" class=\"wp-caption-text\">The pick-up spindle of the VSC series handles the automatic loading and unloading of workpieces. Precision positioning and stable handling ensure a reliable flow of parts.<\/p><\/div>\n<p><span class=\"TrackedChange SCXW184373924 BCX0\"><span class=\"TextRun SCXW184373924 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW184373924 BCX0\">The machine is equipped with conveyor belts on both sides. The input-side belt handles raw-part feed and is designed as a storage section. Depending on the belt length, 20 to 50\u00a0<\/span><\/span><\/span><span class=\"TrackedChange SCXW184373924 BCX0\"><span class=\"TextRun SCXW184373924 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW184373924 BCX0\">raw-parts<\/span><\/span><\/span><span class=\"TrackedChange SCXW184373924 BCX0\"><span class=\"TextRun SCXW184373924 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW184373924 BCX0\">\u00a0can typically be buffered here, achieving effective decoupling of upstream and downstream processes.<\/span><\/span><\/span><span class=\"EOP Selected TrackedChange SCXW184373924 BCX0\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"attachment_3715\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3715\" class=\"size-full wp-image-3715\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px.jpg\" alt=\"Automated parts feeding with sensory equipment and separation for reliable workpiece storage. \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Automated-part-feeding-_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3715\" class=\"wp-caption-text\">Automated feeding of workpieces for CV joint components. Sensory equipment, separation, and precision guidance ensure a reliable material flow in production.<\/p><\/div>\n<h3><b><span data-contrast=\"auto\">The result: A high-precision, integrated manufacturing system for ball tracks<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">The\u00a0<\/span><span data-contrast=\"auto\">integration of all relevant turning and milling processes into a single machine concept creates a manufacturing system that is fully\u00a0<\/span><span data-contrast=\"auto\">closed-loop<\/span><span data-contrast=\"auto\">\u00a0from raw part machining through to final hard machining. The VSC 315 KBU<\/span><span data-contrast=\"auto\">,\u00a0<\/span><span data-contrast=\"auto\">VSC 315 DUO KBU<\/span><span data-contrast=\"auto\">, and VSC 315 TWIN KBG\u00a0<\/span><span data-contrast=\"auto\">combine all technologically necessary steps into a structured process sequence<\/span><span data-contrast=\"auto\">, ensuring<\/span><span data-contrast=\"auto\">\u00a0that dimensional and geometric errors from\u00a0additional\u00a0setups or machine changes are eliminated.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><em><strong>The resulting process chain is characterized by several key features:\u00a0<\/strong><\/em><\/p>\n<ul>\n<li><b><span data-contrast=\"auto\">Minimal setups:<\/span><\/b><br \/>\n<span data-contrast=\"auto\">All critical machining steps\u2014from soft turning through pre-milling to hard milling\u2014are performed in a single clamping setup or a few coordinated setups<\/span><span data-contrast=\"auto\">, preventing\u00a0<\/span><span data-contrast=\"auto\">positioning errors that can occur in conventional process chains.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Reliable machining of hardened materials:<\/span><\/b><br \/>\n<span data-contrast=\"auto\">T<\/span><span data-contrast=\"auto\">he rigid machine structure,<\/span><span data-contrast=\"auto\">\u00a0highly damping\u00a0<\/span><span data-contrast=\"auto\">Mineralit<\/span><span data-contrast=\"auto\">\u00ae\u00a0<\/span><span data-contrast=\"auto\">construction<\/span><span data-contrast=\"auto\">, and\u00a0<\/span><span data-contrast=\"auto\">powerful milling spindles<\/span><span data-contrast=\"auto\">\u00a0enable reliable machining of hardened housings<\/span><span data-contrast=\"auto\">\u00a0even under\u00a0<\/span><span data-contrast=\"auto\">high cutting forces. Hard machining ensures the final raceway accuracy and surface finish.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Short cycle times in series production:<\/span><\/b><br \/>\n<span data-contrast=\"auto\">The combination of high dynamics, automated pick-up loading, and optional dual-spindle concepts results in short non-productive times and high output\u2014ideal for high-volume CV joint production.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<li><b><span data-contrast=\"auto\">Seamless integration into EMAG production lines:<\/span><\/b><br \/>\n<span data-contrast=\"auto\">I<\/span><span data-contrast=\"auto\">dentical automation interfaces, standardized loading units, and EDNA-supported process monitoring<\/span><span data-contrast=\"auto\">\u00a0enable easy integration\u00a0<\/span><span data-contrast=\"auto\">into existing or new manufacturing systems.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">This<\/span><span data-contrast=\"auto\">\u00a0process chain enables\u00a0<\/span><span data-contrast=\"auto\">cost-effective<\/span><span data-contrast=\"auto\">,<\/span><span data-contrast=\"auto\">\u00a0repeatable production of high-precision ball tracks. It<\/span><span data-contrast=\"auto\">\u00a0forms the technological foundation for high-performance joint housings, joint hubs, and outer races used in modern powertrains<\/span><span data-contrast=\"auto\">,\u00a0<\/span><span data-contrast=\"auto\">contributing<\/span><span data-contrast=\"auto\">\u00a0to the functional reliability, smooth operation, and service life of current and future vehicle concepts.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<div id=\"attachment_3717\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3717\" class=\"size-full wp-image-3717\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px.jpg\" alt=\"Joint housing, ball cage, inner race, and balls as components of a cv joint, machined with precision for maximum performance \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Components-of-a-cv-joint-_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3717\" class=\"wp-caption-text\">Main components of a cv joint: joint housing, ball cage, inner race, and balls<\/p><\/div>\n<hr \/>\n<h3><a href=\"https:\/\/www.emag.com\/products-services\/machines\/machining-centers-milling-machines\/vsc-315-kbu\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #004d96\"><strong>VSC 315 KBU:\u00a0Single-spindle\u00a0milling and turning center\u00a0for joint housings<\/strong><\/span><\/a><\/h3>\n<p><span data-contrast=\"auto\">The VSC 315 KBU is a vertical single-spindle milling and turning center specifically designed for machining joint housings and inner races. The machine combines soft and hard machining in a single setup, enabling continuous production without re-clamping.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Machine concept and kinematics:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">The main spindle is arranged vertically and holds the workpiece. Milling is performed by a milling spindle mounted on an NC swivel unit. The B-axis provides flexible tool orientation and allows a swivel range from -30\u00b0 to +90\u00b0.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The machining of inclined ball tracks\u2014particularly for VL joints\u2014is, however, primarily carried out via the Y-axis. Straight ball tracks can be machined accordingly without the Y-axis.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The work area\u00a0<\/span><span data-contrast=\"auto\">accommodates<\/span><span data-contrast=\"auto\">\u00a0workpieces<\/span><span data-contrast=\"auto\">\u00a0up to 160 mm\u00a0<\/span><span data-contrast=\"auto\">in dia<\/span><span data-contrast=\"auto\">meter\u00a0<\/span><span data-contrast=\"auto\">and\u00a0<\/span><span data-contrast=\"auto\">280 mm<\/span><span data-contrast=\"auto\">\u00a0in length<\/span><span data-contrast=\"auto\">.\u00a0<\/span><span data-contrast=\"auto\">Axis\u00a0<\/span><span data-contrast=\"auto\">travels<\/span><span data-contrast=\"auto\">:<\/span><span data-contrast=\"auto\">\u00a0X<\/span><span data-contrast=\"auto\">-axis<\/span><span data-contrast=\"auto\">\u00a0935 mm,\u00a0<\/span><span data-contrast=\"auto\">Y<\/span><span data-contrast=\"auto\">-axis<\/span><span data-contrast=\"auto\">\u00a0315 mm,\u00a0<\/span><span data-contrast=\"auto\">Z<\/span><span data-contrast=\"auto\">-axis<\/span><span data-contrast=\"auto\">\u00a0315\u00a0<\/span><span data-contrast=\"auto\">mm.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Drive technology:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">The workpiece spindle uses maintenance-free AC synchronous spindle motors,\u00a0<\/span><span data-contrast=\"auto\">offer<\/span><span data-contrast=\"auto\">ing<\/span><span data-contrast=\"auto\">\u00a0high power density\u00a0<\/span><span data-contrast=\"auto\">and<\/span><span data-contrast=\"auto\">\u00a0long service life. The milling spindle on the swivel unit\u00a0<\/span><span data-contrast=\"auto\">delivers\u00a0<\/span><span data-contrast=\"auto\">sufficient power for\u00a0<\/span><span data-contrast=\"auto\">soft and\/or hard machining<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Machine structure:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">The VSC 315 KBU features a\u00a0<\/span><span data-contrast=\"auto\">thermosymmetrical<\/span><span data-contrast=\"auto\">\u00a0machine design that minimizes thermally induced deformation. Preloaded linear roller guides on the X-axis with large guide clearances\u00a0ensure\u00a0the required precision even at high feed rates and cutting forces.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The triple-bearing configuration of the spindle unit, featuring optimized bearing spacings and precision shoulder bearings in a tandem O-arrangement, ensures rigidity, good damping, and excellent\u00a0guidance\u00a0quality.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Process Variants:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">For soft machining, the machine can be equipped with two milling spindles to separate rough-machining and finishing operations. In hard machining, the single milling spindle is used with suitable tooling. All machining operations are performed dry,\u00a0<\/span><span data-contrast=\"auto\">increas<\/span><span data-contrast=\"auto\">ing<\/span><span data-contrast=\"auto\">\u00a0process reliability and elimina<\/span><span data-contrast=\"auto\">ting<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">cutting\u00a0fluids\u00a0management.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h3><span style=\"color: #004d96\"><a style=\"color: #004d96\" href=\"https:\/\/www.emag.com\/products-services\/machines\/machining-centers-milling-machines\/vsc-315-kbu\/\">Learn more&gt;&gt;<\/a><\/span><\/h3>\n<div id=\"attachment_3746\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3746\" class=\"wp-image-3746 size-full\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1.jpg\" alt=\"VSC 315 KBU \u2013 vertical single-spindle milling and turning center for machining ball tracks with integrated automation\" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-KBU_1170x781px-1-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3746\" class=\"wp-caption-text\">The VSC 315 KBU is a vertical single-spindle milling and turning center for precision machining of ball tracks in joint housings and inner races. With integrated automation for high process reliability.<\/p><\/div>\n<hr \/>\n<h3><a href=\"https:\/\/www.emag.com\/products-services\/machines\/machining-centers-milling-machines\/vsc-315-duo-kbu\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #004d96\"><strong>VSC 315 DUO KBU: Dual-spindle production solution<\/strong><\/span><\/a><\/h3>\n<p><span data-contrast=\"auto\">The VSC 315 DUO KBU expands the<\/span><span data-contrast=\"auto\">\u00a0single-spindle\u00a0<\/span><span data-contrast=\"auto\">concept<\/span><span data-contrast=\"auto\">\u00a0with a second main spindle,<\/span><span data-contrast=\"auto\">\u00a0enabling<\/span><span data-contrast=\"auto\">\u00a0simultaneous machining of two joint housings. This configuration doubles productivity with a minimal footprint.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Machine design:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">The machine features two opposing main spindles that pick up<\/span><span data-contrast=\"auto\">\u00a0workpieces using the pick-up method. Machining is performed by dedicated milling spindles mounted on NC-controlled swivel units. The machining units are designed as independent compound\u00a0slides\u00a0and each has its own X-, Y-, and Z-axis drives.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Separate measuring systems with linear scales on all linear axes\u00a0ensure\u00a0high positioning accuracy and repeatable precision.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Design features:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">The base body is made of polymer concrete, which\u00a0<\/span><span data-contrast=\"auto\">offers<\/span><span data-contrast=\"auto\">\u00a0excellent vibration damping<\/span><span data-contrast=\"auto\">. This contributes to long tool life and stable processes. The double-walled gantry design further enhances\u00a0<\/span><span data-contrast=\"auto\">stability<\/span><span data-contrast=\"auto\">,<\/span><span data-contrast=\"auto\">enabl<\/span><span data-contrast=\"auto\">ing<\/span><span data-contrast=\"auto\">\u00a0both soft and hard machining at the highest level.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Individual correction options:<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/h4>\n<p><span data-contrast=\"auto\">Since each spindle has its own axis drives and measuring systems, diameter and length corrections can be made individually for each spindle. This increases process reliability and simplifies the setup of new workpieces.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h3><span style=\"color: #004d96\"><a style=\"color: #004d96\" href=\"https:\/\/www.emag.com\/products-services\/machines\/machining-centers-milling-machines\/vsc-315-duo-kbu\/\">Learn more&gt;&gt;<\/a><\/span><\/h3>\n<div id=\"attachment_3723\" style=\"width: 1180px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3723\" class=\"size-full wp-image-3723\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px.jpg\" alt=\"VSC 315 DUO KBU \u2013 Dual-spindle milling and turning center for the precision machining of ball raceways with integrated automation \" width=\"1170\" height=\"781\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px.jpg 1170w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px-300x200.jpg 300w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px-1024x684.jpg 1024w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px-768x513.jpg 768w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px-585x391.jpg 585w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/VSC-315-DUO-KBU_1170x781px-263x175.jpg 263w\" sizes=\"(max-width: 1170px) 100vw, 1170px\" \/><p id=\"caption-attachment-3723\" class=\"wp-caption-text\">The VSC 315 DUO KBU is a dual-spindle milling and turning center for the simultaneous machining of two workpieces. It is ideally suited for the high-productivity production of ball tracks in joint housings and inner races.<\/p><\/div>\n<hr \/>\n<h3><a href=\"https:\/\/www.emag.com\/products-services\/machines\/machining-centers-milling-machines\/vsc-315-twin-kbg\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #004d96\"><strong>VSC 315 TWIN KBG: Twin-spindle production solution for straight ball tracks<\/strong><\/span><\/a><\/h3>\n<p><span data-contrast=\"auto\">The VSC 315 TWIN KBG is designed for hard machining of straight ball tracks in joint housings, outer races, inner races, joint hubs, and joint rings. By performing simultaneous machining of two workpieces in a single work area, it significantly increases productivity while maintaining a compact footprint.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Machine Configuration:<\/span><\/b><\/h4>\n<p><span data-contrast=\"auto\">The machine operates with two independently movable overhead slides. Each slide and<\/span><span data-contrast=\"auto\">\u00a0spindle\u00a0<\/span><span data-contrast=\"auto\">has<\/span><span data-contrast=\"auto\">\u00a0its own X- and Z-axis drives. Separate measuring systems with linear scales on all axes\u00a0ensure\u00a0high-precision machining. This design allows two workpieces to be machined simultaneously with high repeatability.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Design features:<\/span><\/b><\/h4>\n<p><span data-contrast=\"auto\">Technical highlights include motor spindles with motor speeds up to 8,500 rpm and 15 kW power at 100% duty cycle. <\/span><span data-contrast=\"auto\">F<\/span><span data-contrast=\"auto\">luid-cooled spindle housings, high-precision ceramic hybrid bearings, and thermo-symmetrical construction ensure consistent machining accuracy even over long operating periods. The machine base made of\u00a0<\/span><span data-contrast=\"auto\">Mineralit<\/span><span data-contrast=\"auto\">\u00ae significantly improves damping behavior, thereby contributing to stable processes and consistent machining quality.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h4><b><span data-contrast=\"auto\">Automation and correction options:<\/span><\/b><\/h4>\n<p><span data-contrast=\"auto\">The VSC 315 TWIN KBG performs its loading via a pick-up automation system and can be easily integrated into manufacturing systems via infeed and outfeed conveyors. Since both spindles and slides are designed <\/span><span data-contrast=\"auto\">in<\/span><span data-contrast=\"auto\">depen<\/span><span data-contrast=\"auto\">tly<\/span><span data-contrast=\"auto\">, diameter and length corrections can be made individually for each spindle. This increases process reliability and\u00a0facilitates\u00a0adaptation to\u00a0<\/span><span data-contrast=\"auto\">each\u00a0<\/span><span data-contrast=\"auto\">workpiece.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h3><span style=\"color: #004d96\"><a style=\"color: #004d96\" href=\"https:\/\/www.emag.com\/products-services\/machines\/machining-centers-milling-machines\/vsc-315-twin-kbg\/\">Learn more&gt;&gt;<\/a><\/span><\/h3>\n<hr \/>\n<pre><img decoding=\"async\" class=\"wp-image-3741 size-medium alignleft\" src=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Andreas-Liebrich-271x300.jpg\" alt=\"\" width=\"271\" height=\"300\" srcset=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Andreas-Liebrich-271x300.jpg 271w, https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Andreas-Liebrich.jpg 434w\" sizes=\"(max-width: 271px) 100vw, 271px\" \/><span class=\"TextRun SCXW25100020 BCX0\" lang=\"DE-DE\" xml:lang=\"DE-DE\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW25100020 BCX0\">Author: <span class=\"TextRun SCXW246668851 BCX0\" lang=\"DE-DE\" xml:lang=\"DE-DE\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW246668851 BCX0\">Andreas Liebrich, <\/span><\/span><\/span><\/span>Senior Sales and Technology Expert for CV Joint Solutions at EMAG Salach GmbH<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality. <\/p>\n","protected":false},"author":13,"featured_media":3745,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","editor_notices":[],"footnotes":""},"categories":[2615],"tags":[2923,2918,2921,2922,2617,2919,2917,2920,2925,2924],"class_list":["post-3714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machines","tag-ball-cages","tag-ball-tracks","tag-cv-joint","tag-do-joint","tag-emag","tag-inner-races","tag-joint-housing","tag-outer-races","tag-vsc-315-duo-kbu","tag-vsc-315-kbu"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Joint housing: Manufacturing precision ball tracks<\/title>\n<meta name=\"description\" content=\"Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Joint housing: Manufacturing precision ball tracks\" \/>\n<meta property=\"og:description\" content=\"Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\" \/>\n<meta property=\"og:site_name\" content=\"EMAG Group - Company Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-26T06:10:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1170\" \/>\n\t<meta property=\"og:image:height\" content=\"781\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Oliver Hagenlocher\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Oliver Hagenlocher\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\"},\"author\":{\"name\":\"Oliver Hagenlocher\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/9ae8c8fc62dc80b80a172bf9b201adb6\"},\"headline\":\"Manufacturing of ball tracks in joint housings: Precision machining with VSC technology\",\"datePublished\":\"2026-05-26T06:10:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\"},\"wordCount\":2465,\"image\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg\",\"keywords\":[\"ball cages\",\"ball tracks\",\"CV joint\",\"DO joint\",\"EMAG\",\"inner races\",\"Joint housing\",\"outer races\",\"VSC 315 DUO KBU\",\"VSC 315 KBU\"],\"articleSection\":[\"Machines\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\",\"url\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\",\"name\":\"Joint housing: Manufacturing precision ball tracks\",\"isPartOf\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg\",\"datePublished\":\"2026-05-26T06:10:28+00:00\",\"author\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/9ae8c8fc62dc80b80a172bf9b201adb6\"},\"description\":\"Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage\",\"url\":\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg\",\"contentUrl\":\"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg\",\"width\":1170,\"height\":781},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.emag.com\/blog\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Manufacturing of ball tracks in joint housings: Precision machining with VSC technology\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/#website\",\"url\":\"https:\/\/www.emag.com\/blog\/en\/\",\"name\":\"EMAG Group - Company Blog\",\"description\":\"Articles on machines, technologies and more\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.emag.com\/blog\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/9ae8c8fc62dc80b80a172bf9b201adb6\",\"name\":\"Oliver Hagenlocher\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/www.emag.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Blog_Oli_200x200px-96x96.jpg\",\"contentUrl\":\"https:\/\/www.emag.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Blog_Oli_200x200px-96x96.jpg\",\"caption\":\"Oliver Hagenlocher\"},\"url\":\"https:\/\/www.emag.com\/blog\/en\/author\/ylansky\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Joint housing: Manufacturing precision ball tracks","description":"Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/","og_locale":"en_US","og_type":"article","og_title":"Joint housing: Manufacturing precision ball tracks","og_description":"Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality.","og_url":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/","og_site_name":"EMAG Group - Company Blog","article_published_time":"2026-05-26T06:10:28+00:00","og_image":[{"width":1170,"height":781,"url":"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg","type":"image\/jpeg"}],"author":"Oliver Hagenlocher","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Oliver Hagenlocher","Est. reading time":"13 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#article","isPartOf":{"@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/"},"author":{"name":"Oliver Hagenlocher","@id":"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/9ae8c8fc62dc80b80a172bf9b201adb6"},"headline":"Manufacturing of ball tracks in joint housings: Precision machining with VSC technology","datePublished":"2026-05-26T06:10:28+00:00","mainEntityOfPage":{"@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/"},"wordCount":2465,"image":{"@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage"},"thumbnailUrl":"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg","keywords":["ball cages","ball tracks","CV joint","DO joint","EMAG","inner races","Joint housing","outer races","VSC 315 DUO KBU","VSC 315 KBU"],"articleSection":["Machines"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/","url":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/","name":"Joint housing: Manufacturing precision ball tracks","isPartOf":{"@id":"https:\/\/www.emag.com\/blog\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage"},"image":{"@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage"},"thumbnailUrl":"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg","datePublished":"2026-05-26T06:10:28+00:00","author":{"@id":"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/9ae8c8fc62dc80b80a172bf9b201adb6"},"description":"Precision ball tracks in joint housings: Modern VSC machines from EMAG enable stable processes and the highest quality.","breadcrumb":{"@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#primaryimage","url":"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg","contentUrl":"https:\/\/www.emag.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2026\/05\/Blog_Header_1170x781px_en-1.jpg","width":1170,"height":781},{"@type":"BreadcrumbList","@id":"https:\/\/www.emag.com\/blog\/en\/manufacturing-of-ball-tracks-in-joint-housings\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.emag.com\/blog\/en\/"},{"@type":"ListItem","position":2,"name":"Manufacturing of ball tracks in joint housings: Precision machining with VSC technology"}]},{"@type":"WebSite","@id":"https:\/\/www.emag.com\/blog\/en\/#website","url":"https:\/\/www.emag.com\/blog\/en\/","name":"EMAG Group - Company Blog","description":"Articles on machines, technologies and more","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.emag.com\/blog\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/9ae8c8fc62dc80b80a172bf9b201adb6","name":"Oliver Hagenlocher","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emag.com\/blog\/en\/#\/schema\/person\/image\/","url":"https:\/\/www.emag.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Blog_Oli_200x200px-96x96.jpg","contentUrl":"https:\/\/www.emag.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Blog_Oli_200x200px-96x96.jpg","caption":"Oliver Hagenlocher"},"url":"https:\/\/www.emag.com\/blog\/en\/author\/ylansky\/"}]}},"_links":{"self":[{"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/posts\/3714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/comments?post=3714"}],"version-history":[{"count":10,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/posts\/3714\/revisions"}],"predecessor-version":[{"id":3751,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/posts\/3714\/revisions\/3751"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/media\/3745"}],"wp:attachment":[{"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/media?parent=3714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/categories?post=3714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emag.com\/blog\/en\/wp-json\/wp\/v2\/tags?post=3714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}