Angle between pinion axle and rack moving direction is 0 deg.
Normal module mn = 2 mm
Pinion:
- Helix angle B1 = 45 deg.
- Tooth number Z1 = 30
- Pitch circle dia. D1 = 84.85 mm
Rack:
- Helical teeth, B2 = 45 deg.
1 pinion revolution makes rack move Pi.D1.cosB1/cosB2 = 266.56 mm
This drive resembles a screw-nut one when consider: the gear as a screw, the rack as a bar cut out longitudinally from a nut.