Plastic rack and pinion
max. 835.3 N | PR.PRF Quality Transmission Components

The straightness deviation of plastic racks is less than 5mm per meter. You can correct this error by using the bottom surface as the reference when attaching the racks.
Significant variations in temperature or humidity can cause dimensional changes in plastic racks (MC Nylon). Please see P.32 Characteristic of Plastic Gears for additional information.
The reference datum for the gear cutting is the bottom surface. Please use it to position the rack when installing.
The cumulative pitch error of these racks does not confirm to KHK R001 grade 5 specifications.
The allowable transmission forces are calculated according to JGMA Standards 401-01 and 402-01. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.
For plastic materials, it is difficult to determine the operating temperature below which there is no harmful effects from long term, continuous operation. In general, it is set to 20picture2to 30 picture1 below the thermal deflection point. It can also be set by actual usage experience. There is limited data on the low temperature limits of plastics. Users should rely on their own experience taking the brittleness properties into consideration.