齿轮准确性:等于JIS B 1702-1 N8类 牙齿表面硬度:( 187hb或更少) teeth: 40 Shape: S5K Standard circle diameter (mm): 160 Tooth width (mm): 40 Hole diameter (mm): 35 Module: 4 Tooth tip circle diameter: 168 Total length (mm): 40 Key groove: 10 x 3.3 Tap Screw hole position