Gear accuracy: JIS B 1704:1978 Equivalent to grade 0 Heat treatment: Carburize and harden only the teeth Tooth surface hardness: 55-60HRC Module: 4 Number of teeth: 30 Standard circle diameter (mm): 120 Hole diameter (mm): 28 Assembly distance (mm): 90 总长度(mm):48 牙齿宽度(mm):25 形状:B4K >扭曲角:35° 尖端圆形直径(mm):121 boss Diameter(mm):90 90 Boss长度(MM):22 gr/gr/gr/可加工性:部分不可用 点击:M6 钥匙凹槽:8 x 3.3 牙齿概况:Gleason 压力角(°):20