公差等级公差种类基 本 尺 寸03366101014141818242430304040505065658080100100120120140MT1A0.070.080.090.100.110.120.140.160.180.200.230.260.290.32B0.140.160.180.200.210.220.240.260.280.300.330.360.390.42MT2A0.100.120.140.160.180.200.220.240.260.300.340.380.420.46B0.200.220.240.260.280.300.320.340.360.400.440.480.520.56MT3A0.120.140.160.180.200.240.280.320.360.400.460.520.580.64B0.320.340.360.380.400.440.480.520.560.600.660.720.780.84MT4A0.160.180.200.240.280.320.360.420.480.560.640.720.820.92B0.360.380.400.440.480.520.560.620.680.760.840.921.021.12MT5A0.200.240.280.320.380.440.500.560.640.740.861.00 1.141.28B0.400.440.480.520.580.640.700.760.840.941.061.20 1.341.48MT6A0.260.320.380.460.540.620.700.800.941.101.281.481.722.00B0.460.520.580.680.740.820.901.001.141.301.481.681.922.20MT7A0.380.480.580.680.780.881.001.141.321.541.802.102.402.70B0.580.680.780.880.981.081.201.341.521.742.002.302.603.10塑料件尺寸公差表摘自GB/T14486-93续 上表 塑料件尺寸公差表摘自GB/T14486-93公差等级公差种类基 本 尺 寸140160160180180200200225225250250280280315315355355400400450450500MT1A0.360.400.440.480.520.560.600.640.700.780.86B0.460.500.540.580.620.660.700.740.800.880.96MT2A0.500.540.600.660.720.760.840.921.001.101.20B0.600.640.700.760.820.860.941.021.101.201.30MT3A0.700.780.860.921.001.101.201.301.401.601.74B0.900.981.061.121.201.301.401.501.641.801.94MT4A1.021.121.241.361.481.621.802.002.202.402.60B1.221.321.441.561.681.822.002.202.402.602.80MT5A1.441.601.761.922.102.302.502.803.103.503.90B1.641.801.962.122.302.502.703.003.303.704.10MT6A2.202.402.602.903.203.50 3.804.304.705.306.00B2.402.602.803.103.403.704.004.504.905.506.20MT7A3.003.303.704.104.504.905.406.006.707.408.20B3.203.503.904.304.705.105.606.206.907.608.40注： 1、A为不受模具活动局部影响的尺寸公差值；B为受模具活动局部影响的尺寸公差值； 2、?公差等级?按下页?常用材料模塑件公差等级选用表?确定。常用材料模塑件公差等级选用表摘自GB/T14486-93塑 料代 号模 塑 材 料公 差 等 级备 注未注公差尺寸未注公高精度一般精度差尺寸ABS丙烯晴丁二烯苯乙烯共聚物MT2MT3MT5AS丙烯晴苯乙烯共聚物MT2MT3MT5制透明罩、外壳CA醋酸纤维素塑料MT3MT4MT6EP环氧树脂MT2MT3MT5PAPA6、PA66(尼龙类塑料)PA46 聚酰氨均聚物无填料填充MT3MT4MT6玻璃纤维填充MT2MT3MT5PC聚碳酸脂(PC5509透明、耐电弧)MT2MT3MT5耐连续高温120PDAP聚邻苯二甲酸二烯脂MT2MT3MT5PE聚乙烯MT5MT6MT7PESL聚醚砜MT2MT3MT5PBTPET聚对苯二甲酸丁二醇脂(PET为影视胶片、带材料)无填料填充MT3MT4MT6作绝缘件、外壳玻璃纤维填充MT2MT3MT5PF酚醛塑料无机填料填充MT2MT3MT5有机填料填充MT3MT4MT4PMMA聚甲基丙烯酸甲脂MT2MT3MT5POM聚甲醛模塑料自润滑性好耐连续高温85150mmMT3MT4MT6可作传动零件150mmMT4MT5MT7PP聚丙烯无填料填充MT3MT4MT6无机填料填充MT2MT3MT5PPO聚苯醚耐连续高温110MT2MT3MT5PPS聚苯硫醚耐连续高温250作牵引杆MT2MT3MT5制件需高温处理PS聚苯乙烯透明MT2MT3MT5制透明罩、外壳PSF聚砜耐热、高强度、低翘曲MT2MT3MT5耐连续高温120RPVC硬质聚氯乙烯无强塑料MT2MT3MT5SPVC软质聚氯乙烯MT5MT6MT7VF/MF氨基酸料和氨基酚醛塑料热固性模塑料无机填料填充MT2MT3MT5脲甲醛VF，三聚氰胺脲甲醛MF有机填料填充MT3MT4MT6DMC-3不饱和聚脂玻璃纤维模塑料玻璃纤维填充MT2MT3MT5耐电弧DF553热固性模塑料MT2MT3MT5耐电弧SMC-1热固性模塑料MT2MT3MT5耐电弧DF551热固性模塑料MT2MT3MT5耐电弧平冲压件尺寸公差表摘自GB/T13914-1992 冲裁根本尺寸材料厚度公 差 等 级 注：公差等级按?平冲压件尺寸公差等级选用表?确定。大于至大于至ST1ST2ST3ST4ST5ST6ST7ST8ST9ST10ST11-1-0.50.0080.0100.0150.0200.0300.0400.0600.0800.120.16-0.510.010.0150.020.030.040.060.080.120.160.24-11.50.0150.020.030.040.060.080.120.160.240.34-