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Long life wheels use polyaryletherketone

Up to 4000 coins per minute can pass through Scancoin's SC 4000 coin counting machine, so the company chose a material that offers outstanding mechanical strength and wear resistance to mold 20 small ...


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March 1, 2001 by Canadian Plastics


Up to 4000 coins per minute can pass through Scancoin’s SC 4000 coin counting machine, so the company chose a material that offers outstanding mechanical strength and wear resistance to mold 20 small wheels that convey the coin bags. Victrex’s PEEK polyaryletherketone has “outstanding long-term resistance to friction and wear under high-pressure/high velocity conditions, and over a wide range of temperatures and counter-facial roughness,” says Kevin Jennings, general manager for Victrex North America.

The design calls for a bearing to be pressed into the centre of each wheel, so dimensional accuracy and “hoop strength” were also key requirements.

In order to ensure consistent part quality and roundness, a hot-runner mold was developed for the wheels. “The single cavity mold has interchangeable inserts to facilitate the molding of the wheels — with and without flanges,” explains Jennings.

Victrex USA Inc. 800-VICTREX


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