Gear accuracy: JIS B 1704:1978 Equivalent to Grade 4 Heat treatment: Carburize and harden only the teeth Tooth surface hardness: 55-60HRC Surface treatment: Black dye (no black dyeing in additional working parts) Module: 2 Number of teeth: 30 Standard circle diameter (mm): 60 Hole diameter (mm):15 装配距离(mm):50 总长度(mm):29.43 牙齿宽度(mm):12 形状:B3K 尖端圆形直径(mm):62.83 附加可工程性:部分不可用 点击:M4 钥匙凹槽:5 x 2.3 牙齿概况:Gleason 压力角(°):20