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: 30 Standard circle diameter (mm): 90 Hole diameter (mm): 20 Assembly distance (mm): 70 总长度(mm):39.5 牙齿宽度(mm):20 形状:b4k 扭曲角:35° 尖端圆形直径(mm):91 boss Diameter(mm):65 35 boss长度(mm):可加工性:部分不可用 点击:M5 钥匙凹槽:6 x 2.8 牙齿轮廓:Gleason 压力角(°):20