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:54 形状:S1K 标准圆直径(mm):135 牙齿宽度(M M):25孔直径(mm):40模块:2.5齿尖端圆形直径:140总长度(mm)公差:H7牙齿表面表面:切割水龙头:M8