They are made of high quality steel
The dimensions are within the range : length 150 up to 600 mm
basic material diameter 20 up to 70 mm
Depending on type, the following technologies are needed for the production:
-Heat treatment
-Turning
-Grinding
-Knurling
-Inductive hardening
-Milling of surfaces and grooves
-Milling of external straight and inclined teeth
- Recessing of internal straight and oblique teeth
-Extension of internal toothing