液压设计常用资料-密封沟槽尺寸

1、径向密封沟槽尺寸O形密封圈截面直径d21.802.653.555.307.00沟槽宽度b气动动密封2.23.44.66.99.3液压动密封和静密封b2.43.64.87.19.5b13.85.06.29.012.3b25.26.47.610.915.1沟槽深度t活塞密封（计算d3用）液压动密封气动动密封静密封1.422.162.964.485.951.462.233.034.656.201.382.072.744.195.67活塞杆密封（计算d6用）液压动密封气动动密封静密封1.472.243.074.666.161.572.373.244.866.431.422.152.854.365.89

2、导角长度zmin1.11.51.82.73.6槽底圆角半径r10.20.40.40.80.81.2槽棱圆角半径r20.10.3沟槽尺寸计算方法活塞密封沟槽：d3max=d4min-2t活塞杆密封沟槽：d6min =d5max+2t轴向密封沟槽尺寸O形密封圈截面直径d21.802.653.555.307.00沟槽宽度b2.63.85.07.39.7沟槽深度h1.281.972.754.245.72槽底圆角半径r10.20.40.40.80.81.2槽棱圆角半径r20.10.3沟槽尺寸计算方法受内压的沟槽形式：d7=d1-2d2受外压的沟槽形式：d8 =d1沟槽各尺寸公差沟槽尺寸O形密封圈截面直径

3、d21.802.653.555.307.00缸孔直径d4+0.060 +0.070 +0.080 +0.090 +0.110 O形圈沟槽内径d30-0.040-0.050-0.060-0.070-0.09总公差d3+d40.100.120.140.160.20活塞直径d9f7活塞杆直径d5-0.01-0.04-0.02-0.07-0.03-0.09-0.03-0.10-0.04-0.13O形圈沟槽外径d6+0.060 +0.070 +0.080 +0.090 +0.110 总公差d5+d60.100.120.140.160.20活塞杆配合孔直径d10H8轴向密封时沟槽外径d7H11轴向密封时沟

4、槽内径d8H11O形圈沟槽宽度b、b1、b2+0.250 轴向密封时沟槽深度h+0.100 为适应特殊应用，d3+d4及d5+d6的公差可以改变，但d3+d4及d5+d6的总公差值不应超过表列数值。沟槽及与O形圈配合表面的表面粗糙度表面应用情况压力状况表面粗糙度RaRamax沟槽的底面和侧面静密封无交变、无脉冲3.2（1.6）12.5（6.3）交变或脉冲1.66.3动密封1.6（0.8）6.3（3.2）配合表面静密封无交变、无脉冲1.6（0.8）6.3（3.2）交变或脉冲0.83.2动密封0.41.6导角表面3.212.5O形圈使用范围O形圈规格范围应用d2d1活塞密封活塞杆密封液压动密封气动

5、动密封静密封液压动密封气动动密封静密封1.80374548501321405002.657122423618003.5518041242520005.304001150118040007.001090250025806700注： 为推荐使用密封形式字母代号d1O形圈内径d2O形圈截面直径d3O形圈沟槽内径（活塞密封时，沟槽底直径）d4缸孔直径d5活塞杆直径d6O形圈沟槽外径（活塞杆密封时，沟槽底直径）d7轴向密封时沟槽外径（受内压）d8轴向密封时沟槽内径（受外压）d9活塞直径（活塞密封）d10O形圈截面直径bO形圈沟槽宽度b1加1个挡圈的O形圈沟槽宽度b2加2个挡圈的O形圈沟槽宽度z导角长度r

6、1槽底圆角半径r2槽棱圆角半径2g径向间隙油缸组合密封结构尺寸活塞密封缸径D（H9）L2+0.2S1max重载标准轻载20MPa40MPa153540753.20.50.315354075801304.24075801301353206.30.60.4801301353203506508.11353203506500.70.5活塞杆密封杆径d（f8）L4+0.2S2max重载标准轻载20MPa40MPa81820363.20.250.28182036401904.20.32036401902002506.30.4401902002502605008.12002502605000.5TL支撑环及防尘圈选用尺寸缸径D（H9）L1+0.2201405.60/6.3602209.7013040015.0032065025.