Adjustment and Marking of Gear Sets

1. Identification "0937" signifies an Oerlikon gear set with a ratio of 37:9
2. Gear set pairing number (312)
3. Deviation (tolerance) "r" is based on the test machine master gauge adjustable used during production. Deviation "r" is always given in 1/100 mm. Example: 25 signifies r = 0.25 mm
Ro - Length of master gauge adjustable used on test machine Ro
Ro - Ring gear = 57.50 mm (2.263 inch)
R - Actual dimension between center axis of ring gear and face of pinion shaft at point with quietest running for this gear set.
R = Ro + r
Vo - Hypoid offset