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Application Description

The work-pieces are bearing races, and the MVL’s main workload is hard-turning the outside diameter of the inner race components. Work-piece diameters range from roughly 20 to 45 inches, and heights are generally about 6 to 12 inches. Materials are hardened steel, with hardness ranging from 58 to 62 Rc.

Momentum Machines Employed

The work utilizes an MVL-12 equipped for high precision with a WENtechnology magnetic chuck and Heidenhain linear scales. The MVL-12’s standard specs include a 1,250mm (49″) table diameter and 1,600mm (63″) swing. However, for this application a 1,600mm (63″) diameter magnetic chuck was used, in order to accommodate the customer’s largest diameter work-pieces.

Results Achieved

The customer routinely turns bearing race surfaces on single-piece lot sizes, so no setup piece or multiples are available to dial in a process. And the MVL is holding surface profile tolerances of fewer than 20 microns. In fact, it is holding tolerances which in the customers’ other production facilities require either finished grinding after hard turning or highly-specialized and very expensive dedicated hard turning lathes.

Would talking with this customer be helpful?

If you feel that Momentum is a good fit for your application and that a discussion with an existing user would be helpful, we would love to help connect you. We only ask that your project be well enough along to be respectful when asking our customers for their time and that we together confirm the absence of competitive conflicts.

Client Details

Customer: A leading OEM for bearings and seals for worldwide commercial and industrial applications. The plant which is subject of this case study primarily re-manufactures customers’ bearings.

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