SGE series Module 0.5 Pressure angle 20° (regular teeth) Number of teeth: 90 Shape: B1 Standard circle diameter d(mm): 45 Hole diameter (mm): 6 Tooth width b(mm): 5 Module m: 0.5 Number of teeth Z: 90 Tip circle diameter DA(MM):46 牙齿宽度DD(H7)(MM):6 集线器外形DH(mm):32 集线器长度LH(mm):8 总长度L(mm):13