4.Pressure Angle(α): 14.5°-30° 5.Helix Angle(β): 0°-35° 6.Direction of Helix Angle: Left Hand or Right Hand 7.Accuracy: GB/T14333-93 Standard Class A 8.Features: It can shave pitch of a pair of gear or many pairs of gears on the same mandrel between intervals of 4mm-5mm.It can shave modified toothandreduce any driving noise of gears. The modified output can be controlled within 5μm-15μm The surface roughness Ra 0.4μm-0.8μm can be obtained for tooth surface of gear.The plunge shaving can work 1 time higher than common shaving. We can provide all kinds of gear hobs, gear shaper cutters and gear shaving cutters. If you have any requirement, pls contact us. We'll try our best to satisfy you. You're welcome every time. all the time.