SGE series Module 1.0 Pressure angle 20° (regular teeth) Number of teeth: 50 Shape: B1 Standard circle diameter d(mm): 50 Hole diameter (mm): 8 Tooth width b(mm): 10 Module m: 1.0 Number of teeth Z: 50 Tip circle diameter da(mm):52 牙齿宽度W(mm):10 孔直径DD(H7)(MM):8 集线器外部形状DH(mm):35 集线器长度LH(mm):10 总长度L(MM):20