Ring And Pinion Contact Pattern Chart

Move the ring gear away from the pinion increase backlash while maintaining minimum backlash.

Ring and pinion contact pattern chart.

Begin by setting proper pinion bearing preload total turning preload and ring gear backlash. Ring gear contact pattern interpretation of face hobbed uniform tooth depth gear teeth proper ring gear to pinion gear contact pattern is critical for quiet and trouble free gear set operation. Gear contact patterns interpretation adjustment guide. Ring and pinion gear pattern is one of the most valuable tools for determining if a differential is properly set up.

Pinion mounting distance pmd adjustment on a face milled or 5 cut gear as pmd increases shim thickness decreases the pattern shifts toward the top face and towards the heel on the drive side and towards the toe on the coast side. Use gear marking compound to paint all of the ring gear. Toe contact pattern is concentrated off the toe end of the drive gear tooth. Check the tooth contact pattern to diagnose or after installing and adjusting a new ring and pinion gearset.

Ring gear tooth profile face hobbing face milling the toe of the gear is the portion of the tooth surface at the end towards the center. The images below illustrate both acceptable and unacceptable ring and pinion gear patterns. The heel of the gear tooth is the portion of. Ring and pinion gear pattern interpretation adjustment.

Ring gear and pinion tooth pattern interpretation the final pinion position will be verified by using the gear contact pattern method described as follows.