齿轮精度:等于JIS B 1702-1 N8级 牙齿表面硬度:( 187hb或更少) teeth: 40 Shape: S5K Standard circle diameter (mm): 120 Tooth width (mm): 30 Hole diameter (mm): 35 Module: 3 Tooth tip circle diameter: 126 Total length (mm): 30 Key groove: 10 x 3.3 Tap Screw hole position