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 black染色。 ) 牙齿数量:34 形状:S1MA 标准圆直径(mm):68 >牙齿宽度(mm):20 孔直径(mm):20 模块:2 模块:2 2 50 boss长度(mm):(左)8(右)16 牙齿表面饰面:Grind 螺栓尺寸:M5 x 18 螺栓数:8 灌木直径:42