Gear accuracy: JIS B 1704 Grade 0 Tooth profile: Gleason Pressure angle: 20° Material: SCM415 Heat treatment: Carburizing and hardening only the tooth surface Tooth surface hardness: 55-60HRC Module: 2.5 Number of teeth: 30 Standard circle diameter (mm): 75 Hole直径(mm):16 装配距离(mm):60 牙齿宽度(mm):15 形状:B4 扭曲角:35° boss Diameter(mm):55 30