公差与配合等级和粗糙度等知识汇总

10/2410/24/24

7su承"1岫川典情眼中F闹臀. -「囱门” k

常用加工方法与达到粗糙度对比表〖表1〗Ram2010.05.02.51.250.630.320.160.080.040.020.01=12.56.33.21.60.80.40.20.10.050.0250.01234567891011121314孔加工方案与经济公差〖表2〗Ram1IT11-1320<(15-20)mm2IT8-95.0-2.53IT7-82.5-1.254IT1120-10.0>(15-20)mm5IT8-95.0-2.56IT72.5-1.257IT6-70.63-0.1608IT6-72.5-0.1609IT11-1320-10.010()- ()IT8-95.0-2.511()- ()- ()IT7-82.5-1.2512()-()--IT6-71.25-0.6313()- -IT7-81.25-0.3214()---IT6-70.32-0.16015IT6-70.63-0.08016IT6-70.32-0.04017IT60.160-0.010平面加工方案与经济公差〖表3〗Ram1IT8-910-5.02IT6-72.5-1.53IT7-91.25-0.324( )-( )IT7-910.0-2.5( )5( )- ( )-IT5-61.25-0.1606( )- ( )-IT61.25-0.327( )- ( )-IT61.25-0.328( )-( 卜-IT5-60.63-0.0409IT6-91.25-0.32, (10IT5

外圆表面加工--方案与经济公差〖表4〗Ram1.IT11-1380-202.IT8-910.0-5.03.IT6-72.5-1.254.- - - ( )IT6-70.32-0.0405.IT6-71.25-0.63,,6.IT5-60.63-0.1607.^― ^― ^― ^―)IT50.160-0.0208.IT5-60.63-0.0409.IT50.040-0.01010.IT50.160-0.010表面粗糙度与光洁度的关系参考表（单位串m）〖表5〗

表面粗糙度Ra值的应用范围[表6]■一i4Vvr12/cm2二IT127V1Vj.s/r-•12/cm2IT8it127VV?310/cm2IT6IT8Vw310/cm278V▽IT5 IT55IT6 C 3V6标准公差值（基本尺寸大于6至500mm）基本尺寸mm公差等级IT5IT6IT7IT8IT9IT10IT11IT12>6~10691522365890150>10-1881118274370110180>18~3091321335284130210>30~501116253962100160250>50~801319304674120190300>80~1201522355487140220350>120~18018254063100160250400>180~25020294672115185290460>250~31523325281130210320520>315~40025365789140230360570>400~50027406397155250400630孔的极限差值（基本尺寸由大于10至315mm）pm基本尺寸mm>018>1830>3050>5080>80120>120180>180250>250315D8+77+98+119+146+174+208+242+271+50+65+80+100+120+145+170+190

基本尺寸mm>018>1830>3050>5080>80120>120180>180250>250315▼9+93+117+142+174+207+245+285+320+50+65+80+100+120+145+170+19010+120+149+180+220+260+305+355+400+50+65+80+100+120+145+170+19011+160+195+240+290+340+395+460+510+50+65+80+100+120+145+170+1906+43+53+66+79+94+110+129+142+32+40+50+60+72+85+100+1107+50+61+75+90+107+125+146+162+32+40+50+60+72+85+100+110E8+59+73+89+106+126+148+172+191+32+40+50+60+72+85+100+1109+75+92+112+134+159+185+215+240+32+40+50+60+72+85+100+11010+102+124+150+180+212+245+285+320+32+40+50+60+72+85+100+1106+27+33+41+49+58+68+79+88+16+20+25+30+36+43+50+567+34+41+50+60+71+83+96+108F+16+20+25+30+36+43+50+56▼8+43+53+64+76+90+106+122+137+16+20+25+30+36+43+50+569+59+72+87+104+123+143+165+186+16+20+25+30+36+43+50+566+11+13+16+19+22+25+29+3200000000▼7+18+21+25+30+35+40+46+52H00000000▼8+27+33+39+46+54+63+72+8100000000▼9+43+52+62+74++100+115+1300000000010+70+84+100+120+140+160+185+21000000000▼11+110+130+160+190+220+250+290+320000000006+2+2+3+4+4+4+5+5911131518212427▼7+6+6+7+9+10+12+13+16K12151821252833368+8+10+12+14+16+20+22+25192327323843505669111214162022252028243338455157▼7578910121414N23283339455260668333444553036425058677786P615182126303641472631374552617079

基本尺寸mm>018>1830>3050>5080>80120>120180>180250>250315▼711141721242833362935425159687988轴的极限偏差（基本尺寸大于10至315mm）基本尺寸mm>1018>1830>3050>5080>80120>120180>180250>250315d65065801001201451701906178961191421701992227506580100120145170190688610513015518521624285065801001201451701907798119146174208242271▼95065801001201451701909311714217420724528532010506580100120145170190120149180220260305355400f▼716202530364350563441506071839610881620253036435056435364769010612213791620253036435056597287104123143165186g567910121415171416202327323540▼667910121415171720252934394449767910121415172428344047546169h5000—8—9—11—13—15—18—20—23▼60—110—130—16—19—22—25—29—32▼70000000—18—21—25—30—35—40—46—52800000000—27—33—39—46—54—63—72—81▼900000000—43—52—62—74—87—100—115—130K5+9+11+13+15+18+21+24+27+1+2+2+2+3+3+4+4▼6+12+15+18+21+25+28+33+36+1+2+2+2+3+3+3+47+19+23+27+32+38+43+50+56+1+2+2+2+3+3+4+4M5+15+17+20+24+28+33+37+43+7+8+9+11+13+15+17+206+18+21+25+30+35+40+46+52+7+8+9+11+13+15+17+207+25+29+34+41+48+55+63+72+7+8+9+11+13+15+17+20N5+20+24+28+33+38+45+51+57+12+15+17+22+23+27+31+34▼6+23+28+33+39+45+52+60+66

基本尺寸mm>1018>1830>3050>5080>80120>120180>180250>250315+12+15+17+20+23+27+31+347+30+36+42+50+58+67+77+86+12+15+17+20+23+27+31+34p5+26+31+37+45+52+61+70+79+18+22+26+32+37+43+50+56▼6+29+35+42+51+59+68+79+88+18+22+26+32+37+43+50+567+36+43+51+62+72+83+96+108+18+22+26+32+37+43+50+56▼形状和位置公差形位公差符号口O由/pmd(D)网_--Joi i%___4QV////77,d(D)mm>610>1018>1830>3050>5080>80120>120180>180250>250315>315400>40050051.522.52.534578910EC62.534456810121315745678101214161820868911131518202325279911131619222529323640101518212530354046525763直线度和平面度公差pm

平行度、垂直度和倾斜度公差pmLd(D)——- pA .r*_r「口 1胃1』1力<1Lf一一一一1 FT…L_. 1GJ.一国.L：'U_k.-)L\♦pJJ-uf<J/A,f\■ ——cLdDmm<10>1016>1625>2540>4063>63100>100160>160250>250400>400630556810121520253040DE CD681012152025304050607107121520253040506080100FGh6g6820253040506080100120150

同轴度、对称度、圆跳动和全跳动公差确良 pm常用公差或合表配合性质基孔基轴制公差|间隙配合7基本尺标HEh5H6h6H7h7118h8H9h9H10hlOHJ1hllHJ2hl2f718f9g6g703.004.006.010.014.025由40,060.100-.006-h016-.006-mo-.006,031-.002-+0W-.002-领8-.002-M236.005.频.01：.018.030M48.075,12。-mo-.022-.010-ms-.010-.040--004-*009-004-Ml-1X)4-M6610.006.Oft9.015.022036,058*090.150-.013-.028-.013-.035-.013-.049-.005-.011-.005-.014.(HI510博.008MUQIS027043mo.110，网-.016-.034-.016,043-.016*059-.ODti-.006-.017.出跖-.0241830.009.013.021033.052,084」30.210.020-.041-.020「053-.020-.072-.007-+016-.007-mo-.M73050.011.016.025.039,062.100,160.250-.025--050-.025-,Q64-.025-,087-.009-+OZO-.009.R5.m.0345080,013.019.030.046,074.120,190JOO.030-.060-.030-.076-.030-.104-.010-.023-.010-.019.010.0408012Q,015.022.035.054,087.140.220.350-.036-.071-.036-.090-.036-.123-.012-.027-.012-.034.012.0471201新.018麻5040063.100.160J50-4UIJ-.045-.083-.043-.106..043-.143-.014-.032-.014-.039.014.054180250,020.029.046.072.115.185.290.460.050.096-.050-.122-.050-.165,015-.Q3S-.015-.044由15.051250315,023.052.052,081,130.210320.520-.056-.108-.056-.137-.056-.186,017-丽-.017-.049.1)69400,025.036.057.089,140上30360.570.062-.119-.062-.151-.062-.201-.018-.042-.018-.054.0L8.07。400500,027.040.063,097,155.250,400.630.068.131mb-.165-.068-.225-.020-,(M7-.020--0^0.020.储3

过渡配合过城配，、国标+n5+ni5+k5±jS5+n6+m6+k6tjs6+n7+m7+k7±js7+r5+r6播时\+n5+m5+k5+n6-RnG+k6+n7+m7+k7+r5+r6A口.ooa,006.004,002。,010JOS,006,0030JU,012.010fiAA,014,016U3,004.002+ooo+C04,0Q2+ooo.004+002.000guujyt0ID+01Q3fi.013.00«.004.006，:,0025,01Amg,012.004.003，:"一,QD4Q,020J0&,01A.004,0G1.0060.02。.015.023.015由10.016,012,007.ooao,019,015.01Q.0045J25,021,016.0070.025.028o..11：：■,006,001,010,006,001J10,006,001.019.01910IShQ2C,012』15.007+009+OQ1.0040+023<12,007+012+O01.0055由3口JI2+025+O07,019,001.0090,031,023+034+023ISso.024H015.017.OOfi.011+002