O形密封圈用挡圈标准.doc

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1、四川长江工程起重机有限责任公司企业标准O形橡胶密封圈用挡圈QJ/CQ32001—20061范围本标准规定了与GB/T3452.1配套使用的O形橡胶密封圈用挡圈的结构形式、规格尺寸、材料、标记代号。本标准适用于径向固定O形橡胶密封圈工作压力大于16Mpa的液压元件。2引用标准GB3452.1-2005，液压与气动用O形密封圈第1部份：尺寸系列及公差。3挡圈结构及沟槽形式在O形橡胶密封圈承压面设置挡圈，O形密封圈单向受压时，在承压面设置一个挡圈，双向受压时在两个承压面各设置一个挡圈。3.1液压元件O形橡胶密封圈用挡圈结

2、构如图：图1挡圈结构D—挡圈外径mmd—挡圈内径mmB—径向宽度mmT—挡圈厚度mmt—斜切口宽度mmQJ/CQ32001—20063.2液压元件O形橡胶密封圈沟槽形式如图：4O形橡胶密封圈用挡圈尺寸及公差见表1。5材料聚四氟乙烯6标记示例：GB3452.1O形橡胶密封圈用挡圈标记为：挡圈内径d=100，径向宽度B=2.1，材质为聚四氟乙烯。标记为：挡圈d100×2.1CQ32001-2006表1挡圈尺寸及公差QJ/CQ32001—2006O形密封圈挡圈O形密封圈挡圈公称内径d截面直径Ф内径径向宽度厚度T公称内径d

3、截面直径Ф内径径向宽度厚度Td公差B公差d公差B公差6.01.86.0+0.0801.4-0.02-0.101±0.126.51.826.5+0.0801.4-0.02-0.101±0.16.36.327.327.36.76.728.028.06.96.929.029.07.17.130.030.07.57.531.531.58.08.032.532.58.58.533.533.58.758.7534.534.59.09.035.535.59.59.536.536.59.759.7537.537.510.010.0

4、38.738.710.610.640.040.011.211.241.241.211.611.642.542.511.811.843.743.712.112.145.045.012.512.546.246.212.812.850.050.013.213.210.62.6510.62.114.014.011.211.214.514.511.611.615.015.011.811.815.515.512.112.116.016.012.512.517.017.012.812.818.018.013.213.219.01

5、9.014.014.020.020.014.514.520.620.615.015.021.221.215.515.522.422.416.016.023.023.017.017.023.623.618.018.024.324.319.019.025.025.020.020.025.825.820.620.6续表1QJ/CQ32001—2006O形密封圈挡圈O形密封圈挡圈公称内径d截面直径Ф内径径向宽度厚度T公称内径d截面直径Ф内径径向宽度厚度Td公差B公差d公差B公差21.22.6521.2+0.0802.1-0

6、.02-0.101±0.167.02.6567.0+0.0802.1-0.02-0.101±0.122.422.469.069.023.023.071.071.023.623.675.075.024.324.377.577.525.025.080.080.025.825.882.582.526.526.585.085.027.327.387.587.528.028.090.090.029.029.092.592.530.030.095.095.031.531.597.597.532.532.510010033.53

7、3.51031030-0.1534.534.510610635.535.510910936.536.511211237.537.511511538.738.711811840.040.011211241.241.212512542.542.512812843.743.713213245.045.013613646.246.214014047.547.5142.5142.548.748.714514550.050.0147.5147.551.551.515015053.053.015515554.554.518.03

8、.5518.0+0.0802.81.5±0.156.056.019.019.058.058.020.020.060.060.020.620.661.561.521.221.263.063.022.422.465.065.023.023.0续表1QJ/CQ32001—2006O形密封圈挡圈O形密封圈挡圈公称内径d截面直径Ф内径径向宽度厚度T公称内径d截面直径Ф