Gear accuracy: JIS B 1702-1 Before N8 grade heat treatment Tooth profile: regular teeth Pressure angle: 20° Material: S45C Heat treatment: Induction hardening on the tooth surface Tooth surface hardness: 50-60HRC Surface treatment: Black dye (no re-black dye after additional work, no re-black dye after quenching) Number of牙齿:24 形状:S5K 标准圆直径(mm):72 牙齿宽度(mm):30 孔直径(mm):17 模块:3 牙齿尖端圆形直径:78 牙齿groove B2 x t2 t2(mm mm)完成:切割