机械五金行业常用尺寸公差表

机械五金行业常用尺寸公差表PAGEPAGE4公差等级公差种类基本尺寸0～33～66～1010～1414～1818～2424～3030～4040～5050～6565～8080～100100～120120～140MT1A0.070.080.090.100.110.120.140.160.180.200.230.260.290.32B0.140.160.180.200.210.220.240.260.280.300.330.360.390.42MT2A0.100.120.140.160.180.200.220.240.260.300.340.380.420.46B0.200.220.240.260.280.300.320.340.360.400.440.480.520.56MT3A0.120.140.160.180.200.240.280.320.360.400.460.520.580.64B0.320.340.360.380.400.440.480.520.560.600.660.720.780.84MT4A0.160.180.200.240.280.320.360.420.480.560.640.720.820.92B0.360.380.400.440.480.520.560.620.680.760.840.921.021.12MT5A0.200.240.280.320.380.440.500.560.640.740.861.001.141.28B0.400.440.480.520.580.640.700.760.840.941.061.201.341.48MT6A0.260.320.380.460.540.620.700.800.941.101.281.481.722.00B0.460.520.580.680.740.820.901.001.141.301.481.681.922.20MT7A0.380.480.580.680.780.881.001.141.321.541.802.102.402.70B0.580.680.780.880.981.081.201.341.521.742.002.302.603.10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140～160160～180180～200200～225225～250250～280280～315315～355355～400400～450450～500MT1A0.360.400.440.480.520.560.600.640.700.780.86B0.460.500.540.580.620.660.700.740.800.880.96MT2A0.500.540.600.660.720.760.840.921.001.101.20B0.600.640.700.760.820.860.941.021.101.201.30MT3A0.700.780.860.921.001.101.201.301.401.601.74B0.900.981.061.121.201.301.401.501.641.801.94MT4A1.021.121.241.361.481.621.802.002.202.402.60B1.221.321.441.561.681.822.002.202.402.602.80MT5A1.441.601.761.922.102.302.502.803.103.503.90B1.641.801.962.122.302.502.703.003.303.704.10MT6A2.202.402.602.903.203.503.804.304.705.306.00B2.402.602.803.103.403.704.004.504.905.506.20MT7A3.003.303.704.104.504.905.406.006.707.408.20B3.203.503.904.304.705.105.606.206.907.608.40注：1）、A为不受模具活动部分影响的尺寸公差值；B为受模具活动部分影响的尺寸公差值；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120℃）PDAP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85℃）≤150mmMT3MT4MT6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110℃）MT2MT3MT5PPS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120℃）RPVC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等级选用表（摘自GB/T13914-1992）冲裁成形冲压件尺寸公差等级选用表（摘自GB/T13914-1992）弯形加工方法尺寸类型公差等级ST1ST2ST3ST4ST5ST6ST7ST8ST9ST10ST11精密冲裁外形内形孔中心距孔边距普通冲裁外形内形外形孔中心距孔边距成形冲压平面冲裁外形内形外形孔中心距孔边距加工方法尺寸类型公差等级FT1FT2FT3FT4FT5FT6FT7FT8FT9FT10拉深直径高度带凸缘直径高度弯曲长度其它成形方法直径高度长度冲压件冲裁角度公差表（注单项“＋”或“－”偏差）（摘自GB/T13915-1992）冲裁公差等级短边尺寸（mm）<10>10~25>25~63>63~160>160~400>400~1000>1000AT10°40′0°30′0°20′0°12′0°5′0°4′AT21°0°40′0°30′0°20′0°12′0°5′0°4′AT31°20′1°0°40′0°30′0°20′0°12′0°6′AT42°1°20′1°0°40′0°30′0°20′0°12′AT53°2°1°20′1°0°40′0°30′0°20′AT64°3°2°1°20′1°0°40′0°30′注：1）、《公差等级》按《冲压件冲裁角度公差等级选用表》确定。2）、未注公差的角度极限偏差，取上表中给出的公差值的一半，冠以“±”号作为上下偏差。冲压件弯曲角度公差表(注单项“＋”或“－”偏差)（摘自GB/T13915-1992）弯曲公差等级短边尺寸（mm）<10>10~25>25~63>63~160>160~400>400~1000>1000BT11°0°40′0°30′0°16′0°12′0°10′0°8′BT21°30′1°0°40′0°20′0°16′0°12′0°10′BT32°30′2°1°30′1°15′1°0°45′0°30′BT44°3°2°1°30′1°15′1°0°45′BT56°4°3°2°30′2°1°30′1°注：1）、《公差等级》按《冲压件弯曲角度公差等级选用表》确定。2）、未注公差的角度极限偏差，取上表中给出的公差值的一半，冠以“±”号作为上下偏差。冲压件冲裁角度公差等级选用表（摘自GB/T13915-1992）冲裁材料厚度(mm)公差等级AT1AT2AT3AT4AT5AT6<3>3冲压件弯曲角度公差等级选用表（摘自GB/T13915-1992）弯曲材料厚度(mm)公差等级BT1BT2BT3BT4BT5<3>3标准公差表（摘自GB1800）直线度、平面度公差表（摘自GB/T1184）基本尺寸公差等级主参数L公差等级IT10IT11IT12（mm）101112大于至μmμmmm大于至μm－340600.10－102030603648750.12101625408061058900.15162530501001018701100.18254040601201830841300.214063508015030501001600.25631006010020050801201900.3010016080120250801201402200.351602501001503001201801602500.402504001202004001802501852900.464006301502505002503152103200.5263010002003006003154002303600.57100016002504008004005002504000.63160025003005001000平行度、垂直度公差表（摘自GB/T1184）同轴度、对称度公差表（摘自GB/T1184）主参D数L、公差等级主参数D、L公差等级(mm)101112（mm）101112大于至μmμmμm大于至μm－105080120－1254060101660100150134060120162580120200365080150254010015025061060100200406312020030010188012025063100150250400183010015030010016020030050030501202004001602502504006005012015025050025040030050080012025020030060040063040060010002505002504008006301000500800120050080030050010001000160060010001500800125040060012001600250080012002000125020005008001500冲裁件未注公差尺寸极限表（摘自GB/T15055-94）《冲裁》(mm)基本尺寸材料厚度公差等级大于至大于至fmcv0.53-1±0.05±0.10±0.15±0.2013±0.15±0.20±0.30±0.4036-1±0.10±0.15±0.20±0.3014±0.20±0.30±0.40±0.55>4-±0.30±0.40±0.60±0.80630-1±0.15±0.20±0.30±0.4014±0.30±0.40±0.55±0.75>4-±0.45±0.60±0.80±1.2030120-1±0.20±0.30±0.40±0.5514±0.40±0.55±0.75±1.05>4-±0.60±0.80±1.10±1.50120400-1±0.25±0.35±0.50±0.7014±0.50±0.70±1.00±1.40>4-±0.75±1.05±1.45±2.104001000-1±0.35±0.50±0.70±1.0014±0.70±1.00±1.40±2.00>4-±1.05±1.45±2.10±2.90弯形件未注公差尺寸极限表（摘自GB/T15055-94）《弯形》（mm）基本尺寸材料厚度公差等级大于至大于至fmcv0.53-1±0.15±0.20±0.35±0.5013±0.30±0.45±0.60±1.0036-1±0.20±0.30±0.50±0.7014±0.40±0.60±1.00±1.60>4-±0.55±0.90±1.40±2.20630-1±0.25±0.40±0.60±1.0014±