Gear accuracy: JIS B 1702-1 Equivalent to N7 grade Tooth profile: Ordinate teeth Pressure angle: 20° Material: S45C Heat treatment: Induction hardening on the tooth surface Tooth surface hardness: 50-60HRC Surface treatment: Black dye (The fastening parts, teeth and additional working parts are not blackened. ) Number牙齿:50 形状:S1MA 标准圆直径(mm):125 牙齿宽度(mm):25孔直径(mm):40模块:2.5齿尖圆圆直径:130总长度:总长度:MM螺栓:10灌木直径:67