Gear accuracy: JIS B 1702-1 Before N9 grade heat treatment Heat treatment: Induction hardening on the tooth surface Tooth surface hardness: 50-60HRC Surface treatment: Black dye (no additional processing or re-black dyeing after quenching) Module: 3 Number of teeth: 15 Standard circle diameter (mm): 63.64 Tooth宽度(mm):25 孔直径(mm):30 总长度(mm):43 扭曲方向:l 形状:S1K boss Dimimeter(mm):50 boss长度(mm):18 角度(°):20 扭曲角(°):45 孔直径公差:H7 钥匙槽:8 x 3.3 tap:m6 M6 牙齿概况:普通牙齿