Transmit large torque
Provide large speed reduction from worm shaft to worm wheel
Transmit higher speeds
Provide large speed reduction from worm wheel to worm shaft
The work is fed in the same direction as the rotation of the cutter
Chip removal starts at the thickest part
Machine with backlash eliminator is essential
The work is fed against the direction of the cutter rotation
24, 12
8, 6
7, 5
3, 2
8 Degree
12 Degree
20 Degree
28 Degree
The cylindrical cutter set on a mandrel will be in between centres
The cylindrical cutter set on a mandrel will be in between chuck and centre
The cylindrical cutter set on a mandrel will be only in chuck
The cylindrical cutter set on a mandrel will be within chuck and steady rest