Gear accuracy: JIS B 1704:1978 Equivalent to grade 0 Heat treatment: Carburize and harden only the teeth Tooth surface hardness: 55-60HRC Module: 3 Number of teeth: 20 Standard circle diameter (mm): 60 Hole diameter (mm): 25 Assembly distance (mm): 50 总长度(mm):30 牙齿宽度(mm):14 形状:B3K >扭曲角度:35° 尖端圆形直径(mm):61 boss Diameter(mm):52 boss长度(mm):16 点击:M6 键槽:8 x 3.3 牙齿概况:Gleason 压力角(°):20