Usage: shave before the gear hob for the modulus of 1mm ~ 8mm, profile angle of 20 ° involute cylindrical gear shaving before processing.

Characteristics and accuracy: hob structure of single-head, dextral zero rake angle flute parallel to the axis of the hob, hob accuracy class is divided into Class A and Class B Type Ⅰ applies to m1 is m1.75 type II applies m2 m8 hob.

Tool marking and examples:
Please specify when ordering: name, model, modulus, accuracy class, rotation (right or left), the standard number.

Example: before shaving gear hobs GW5-B3.75-218 m3.75 A JB/T4103-94