Belt drives are fast and inexpensive, but not generally considered precise when it comes to linear positioning.
The roller pinion body and rack is made from high quality steel with excellent heat treat qualities. The pins are bearing grade steel. The black coating is Raydent. It is a high performance blackening process with excellent wear and corrosion properties.
Plastic racks may be considered in the future for low cost and force applications that need nonmagnetic, or high corrosive resistance.
Cost of the roller pinion system is comparable or less than ball screws and more expensive that traditional precision rack and pinion except for split and dual pinion systems that can be very expensive.
Last edited by allanconway2; 11-17-2004 at 11:06 AM.
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