Long life wheels use polyaryletherketone
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 ...
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
