Carbide Gear Hob With Extended Multi-Head Shank M1.5-M5

Gear Hob
Small module gear hob    M0.2-M1    Ø20-Ø32     AA, A grade
Standard gear hob            M1-M12    Ø55-Ø180    AA, A grade
Front shaving gear hob     M1-M12    Ø55-Ø180    AA, A grade
Grinding gear hob             M1-M12     Ø55-Ø180    AA, A grade
Top cut gear hob              M0.2-M12   Ø15-Ø180    AA, A grade
Chamfering gear hob       M0.8-M12   Ø15-Ø180     AA, A grade

When the knife rotates, the gear rotates one tooth around its axis; when the multi-head hob rotates, the number of teeth rotated by the gear is equal to the number of hob heads. The hob of the worm gear hob is often made into a straight chip groove when the helix angle is less than 5°, which is convenient for manufacturing and sharpening; the hob with a large helix angle is often made into a spiral chip groove, so as to avoid Disadvantage of cutting edges with large negative rake angles. The small and medium modulus gear hob made of high-speed steel generally adopts an integral structure. In order to save high-speed steel, avoid forging difficulties and improve the metallographic structure, the hob with a modulus of more than 10 mm often adopts an insert structure.