同步带轮节距公差（单位：mm） | 外径 | 允许偏差 | 允许偏差 | | | 任意两相邻齿间 | 90°ARC弧内约允查 | | 25.40~50.80 | 0.3 | 0.08 | | >50.80~101.60 | 0.3 | 0.10 | | >101.60~117.80 | 0.3 | 0.13 | | >117.80~304.80 | 0.3 | 0.15 | | >304.80~508.00 | 0.3 | 0.18 | | >508.00 | 0.3 | 0.20 | | | | |
同步轮外径公差（单位：mm） | 带轮外径 | 公差 | | | 25.40~50.80 | +0.08 0 | | | >50.80~101.60 | +0.10 0 | | | >101.60~117.80 | +0.13 0 | | | >117.80~304.80 | +0.15 0 | 0 | | >304.80~508.00 | +0.18 0 | | | | | |
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