thick lubricated bearings

plastic bearings

thin lubricated bearings

antifriction bearings

module

pitch line velocity

tooth profile

module and pitch line velocity

pressure angle

pitch circle diameter

circular pitch

diametral pitch

?_c + 2?_l

2?_c + ?_l

?_c + ?_l²

?_c² + ?_l

10 to 20%

20 to 30%

30 to 40%

40 to 50%