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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/CQ3200120061 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构如图： 图1 挡圈结构D 挡圈外径mmd 挡圈内径mmB 径向宽度
2、mmT 挡圈厚度mmt 斜切口宽度mm QJ/CQ3200120063.2 液压元件O形橡胶密封圈沟槽形式如图：4 O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：GB3452.1 O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d1002.1 CQ32001-2006表1 挡圈尺寸及公差 QJ/CQ320012006O形密封圈挡 圈O形密封圈挡 圈公称内径d截面直径内 径径向宽度厚度T公称内径d截面直径内 径径向宽度厚度Td公差B公差d公差B公差6.01.86.0+0.08 01.4-0.02-0.1010.126.51
3、.826.5+0.08 01.4-0.02-0.1010.16.36.327.327.36.76.728.028.06.96.929.029.07.17.130.030.07.57.531.531.58.08.032.532.58.58.533.533.58.758.7534.534.59.09.035.535.59.59.536.536.59.759.7537.537.510.010.038.738.710.610.640.040.011.211.241.241.211.611.642.542.511.811.843.743.712.112.145.045.012.512.546.246.2
4、12.812.850.050.013.213.210.62.6510.62.114.014.011.211.214.514.511.611.615.015.011.811.815.515.512.112.116.016.012.512.517.017.012.812.818.018.013.213.219.019.014.014.020.020.014.514.520.620.615.015.021.221.215.515.522.422.416.016.023.023.017.017.023.623.618.018.024.324.319.019.025.025.020.020.025.82
5、5.820.620.6续表1 QJ/CQ320012006O形密封圈挡 圈O形密封圈挡 圈公称内径d截面直径内 径径向宽度厚度T公称内径d截面直径内 径径向宽度厚度Td公差B公差d公差B公差21.22.6521.2+0.08 02.1-0.02-0.1010.167.02.6567.0+0.0802.1-0.02-0.1010.122.422.469.069.023.023.071.071.023.623.675.075.024.324.377.577.525.025.080.080.025.825.882.582.526.526.585.085.027.327.387.587.528.028
6、.090.090.029.029.092.592.530.030.095.095.031.531.597.597.532.532.510010033.533.51031030-0.1534.534.510610635.535.510910936.536.511211237.537.511511538.738.711811840.040.011211241.241.212512542.542.512812843.743.713213245.045.013613646.246.214014047.547.5142.5142.548.748.714514550.050.0147.5147.551.5
7、51.515015053.053.015515554.554.518.03.5518.0+0.0802.81.50.156.056.019.019.058.058.020.020.060.060.020.620.661.561.521.221.263.063.022.422.465.065.023.023.0续表1 QJ/CQ320012006O形密封圈挡 圈O形密封圈挡 圈公称内径d截面直径内 径径向宽度厚度T公称内径d截面直径内 径径向宽度厚度Td公差B公差d公差B公差23.63.5523.6+0.0802.8-0.02-0.101.50.173.03.5573.0+0.0802.8-0.
8、02-0.101.50.124.324.375.075.025.025.077.577.525.825.880.080.026.526.582.582.527.327.385.085.028.028.087.587.529.029.090.090.030.030.092.592.531.531.595.095.032.532.597.597.533.533.510010034.534.5103103+0.15 035.535.510610636.536.510910937.537.511211238.738.711511540.040.011811841.241.212212242.542.5
9、12512543.743.712812845.045.013213246.246.213613647.547.514014048.748.7142.5142.550.050.014514551.551.5147.5147.553.053.015015054.554.5152.5152.556.056.015515558.058.0157.5157.560.060.016016061.561.5162.5162.563.063.016516565.065.0167.5167.567.067.017017069.069.0172.5172.571.071.0175175续表1 QJ/CQ32001
10、2006O形密封圈挡 圈O形密封圈挡 圈公称内径d截面直径内 径径向宽度厚度T公称内径d截面直径内 径径向宽度厚度Td公差B公差d公差B公差177.53.55177.5+0.15 02.8-0.02-0.101.50.195.05.395.0+0.0804.2-0.02-0.1020.1218018097.597.5182.5182.5100100185185103103+0.15 0187.5187.510610619019010910919519511211220020011511540.05.340.0+0.08 04.220.1211811841.241.212212242.542.512512543.743.712812845.045.013213246.246.213613647.547.514
