行业标准：JB-T6766-1993 铅酸蓄电池用橡胶、塑料零件.pdf

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1、中华人民共和国机械行业标准JB/T6766一1993铅酸蓄电池用橡胶、塑料零件尺寸公差主题内容与适用范围本标准规定了铅酸蓄电池用橡胶、塑料零件的尺寸公差(以下简称尺寸公差)。本标准适用于注塑成型的塑料零件和模压成型的橡胶零件的公差。2尺寸公差的代号、等级、数值及标注21标注公差尺寸的公差等级分为7级(1一7级)。各级数值见表1。基本尺寸的上、下偏差可根据设计要求分配例如:基本尺寸13，公差等级4级，公差值为050，上、下偏差可分配为13士树，13士0.25、13一执、13十黔等表lmm公差、极限偏差等级尺寸段l2345

2、678910公差数值极限偏差>30.090.130.180260t370.520.73士046士0.58士0.683~60.120.180.250.360510.721.02士064土0.80士0.946~100.140.220.310.440.620.88124士0.78士0.98士12710~140.160.250.350500.71lt00lt41士088士1.12士1.4014~180180280.400.560.791.121.58士。.99士1.25士157,一18一240‘200310.440.62088

3、123175士110士1.3感士1.7424~300t22Ot340.480.680.961361.92士1.21士1.52士19130~400.240.370520741.041.482.09士1.32士1.66士2.0840~500t260t400560801.131602.26士1.42士1.79士22550~650.280.430.600.861.211.722.43士153士1.92士2.4265~800.310.480680.96，诬.361.922.71士1.71士2.15士2.7180~1000.340

4、.52073lt031.472.072‘93士1.84士232士292100~1200.360.570.801141.612.283.22士201士252士3.14120一]4()0.380.600.841.201702403_39士2.13士2t65士331140~1600.400.640.901.281.802563.61士226士2.82士3.53160~1800.420.670.951.341.892.673.78士2.36士2.95士370180~20()0.440.700.991.40].982.803.9

5、6士2.49士314士3t85200~2250.46072ltOZ1.442.032.884‘07士2t53士3.18士4t02机械工业部1993一08一21批准1993一10一01实施408JB/T6766一1993表1(完)mm公差、极限偏差等级尺寸段I234567891O公差数值极限偏差225--2500.480.751.06I.502.123(]〕4.24士2.65士3.31士4.14250-2800.500.791.121.582.233.164.46士2.79士3.5I士4.3628()一3150.520.

6、821.161.642.313274.64土2.92士368土1.56r一一—一一—315-3550.石50.861.211.722.433.444.86士3.06士3.85士4.86355-4000.580.901.271.8(12t543.605.08士3.18土3.97士4.97400一4500.610.951.341.902.683,805.36士3.3弓士4.19士5.04450一5000.640.991.401.982.803.965.60士3.49士4.37士5.4650()一5600.671.041.4

7、72.082.944.155.87士3.67士459士5.吕956()一6300.701.101.562.203.114.396.22士3.98士8.86土6.07630--7100.741.151.632.303.254.606.50士4.06士5.08士6.35710一8000.771.211.712.423.424.836.83士4.27士5.34士6.70800-900().811.271.802.533.595.077.18士4.46士5.61士7.01900一10000.861.341.892.683.79

8、5.367.57士4.73士5.91士7.39100(〕一12500.931.442.042.884.075.768.13士5.08士6.35士7、942.2未注公差尺寸的公差等级分为3级。见表1中8-10级。标注时用公差等级号注明。例如:未注公差尺寸的公差等级为JB/T6766-1993中的8级。3常用材料制件公差等级选用常用材