同步皮带轮规格HTD8M型尺寸表节距=8.0外径公差表标准皮带宽度20.0mm25.0mm30.0mm40mm50mm60MM70mm85mm外径公差L48.053.058.068.079.089.099.0115.0<25.4+0.05-0W28.033.038.048.059.069.079.095.025.4-50.8+0.08+0X899111213141550.8-101.6+0.10+0101.6-177.8+0.13+0177.8-304.8+0.15+0)