同步皮带轮规格HTD8M理论尺寸表同步皮带轮各种规格主要部位理论尺寸表（挡边尺寸仅供参考）HTD-8M型（节距=8.00mm）规格齿数节径d外径do档边直径df档边内径db档边厚度h22-8M2256.0254.6561451.223-8M2358.5757.2064481.224-8M2461.1259.7568521.225-8M2563.6662.2973551.226-8M2666.2164.8473551.227-8M2768.7567.3873551.228-8M2871.3069.9380601.230-8M3076.3975.0282641.232-8M3281.4980.1290701.234-8M3486.5885.2198781.236-8M3691.6790.3098781.238-8M3896.7795.40102831.240-8M40101.86100.49109901.242-8M42106.95105.58115951.244-8M44112.05110.681231031.246-8M46117.14115.771231031.248-8M48122.23120.861311111.550-8M50127.32125.951391101.564-8M64162.97161.6072-8M72183.35181.9880-8M80203.72202.3590-8M90229.18227.81112-8M112285.21283.84)