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Holding a CPK of 1.66 on critical features within a tolerance of 3 -4 microns on diameters and tapers with surface finishes under 1 Ra. At full production this cell was running two shifts, 20 hours per day and producing a quantity of over 1000 shafts per week.

Our customer, a leader in the automotive industry, searched for over two years for a supplier that could grind micron-close tolerance transmission shafts for their CVT continuously variable transmissions. In addition to the challenge of consistently achieving the close tolerances, production of two types of CVT shafts (Primary and Secondary) needed to be up and running within 120 days in order to support Ford’s assembly schedule and avoid costly production delays.

Metalex partnered with our customer and United Grinding Technologies to design a four machine production cell consisting of one small lathe, two Studer cylindrical grinders and a Jung ball grinder, in a temperature controlled environment. Ford placed the order with Metalex in November. The machines were expedited from Germany, arriving in December, and by early February, Metalex began shipping production parts to our customer for assembly into their transmission. Within a few weeks, Metalex was running two shifts and producing over 200 shafts a day.

In addition to the challenge of setting up a production cell in less than three months was developing the capability to consistently hold miron-tight tolerances and achieve super fine surface finishes required to meet our customer’s CPK and qualify for production. The CVT 23 Shaft production cell is an excellent example of how Metalex partners with our customers and suppliers to meet challenging time and cost deadlines.

To find out more about our unique expertise in production of precision parts
and assemblies, please contact us

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Phone: (513) 489-0507
Fax: (513) 489-1020

Production 1000 Shafts Per Week

Precision Grinding Tolerances within 3-4 Microns

Maintain CPK for Production

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Metalex Manufacturing, Inc.     5750 Cornell Road Cincinnati, OH 45242     Call 1-513-489-0507     Fax 1-513-489-1020     Email