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:48 形状:S1MB 标准圆直径(mm):120 牙齿宽度(mm):25 孔直径(MM):32 模块:2.5 牙齿尖端圆圈圆圈:125 125 牙齿表面饰面:磨牙 螺栓尺寸:M5 x 18 螺栓数:10 灌木直径:54