同步带轮规格/型号主要部位理论尺寸表（挡边尺寸仅供参考）H型（节距=12.70mm）规格齿数节径d外径do档边直径df档边内径db档边厚度h14H1456.6055.2264481.215H1560.6459.2768521.216H1664.6863.3173551.217H1768.7267.3573551.218H1872.7771.3980601.219H1976.8175.4484641.220H2080.8579.4884641.221H2184.8983.5290701.222H2288.9487.5698781.223H2392.9891.6198781.224H2497.0295.65102831.225H25101.0699.69109901.226H26105.11103.73109901.227H27109.15107.78115951.228H28113.19111.821231031.230H30121.28119.901311111.532H32129.36127.991391101.534H34137.45136.071521251.536H36145.53144.161531331.538H38153.62152.241641341.540H40161.70160.331691351.542H42169.79168.4144H44177.87176.5046H46185.96184.5848H48194.04192.6750H50202.13200.7560H60242.55241.1872H72291.06289.6984H84339.57338.2096H96388.08386.71)