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1、大电机、水轮机大尺寸公差与配合尺寸大于500mm至3150mm孔、轴公差带与配合JB T 8995.21999前 言 本标准原为JB DQ3311.13311.31988大尺寸公差与配合，1996年底作废。因此现将此标准制定为行业标准，以便继续使用。 本标准在制订过程中，主要按新国家标准GB T 1800极限与配合和参考了国际标准ISO286极限与配合制进行制订的。 本标准与JB DQ3311.13311.31988相比，主要改变如下： 1 在JB T 8995.11999中增加A4章，即all的基本偏差； 2 按GB T 1800.31988中基本尺寸大于500mm的IT5的标准公差值进行6
2、处修改，词汇部分也作了相应修改； 3 参照ISO 2862极限与配合制 第2部分：孔、轴的标准公差等级和极限偏差表对表2孔的极限偏差H5、JS7、JS8的值作了相应修改； 4 编写格式按GB T 1.11993的规定。 本标准的附录A是标准的附录。 本标准由哈尔滨大电机研究所提出并归口。 本标准起草单位：哈尔滨大电机研究所、哈尔滨电机有限责任公司。 本标准主要起草人：赵延长、房庆辉、宗瑞泉。 本标准委托哈尔滨大电机研究所负责解释。中华人民共和国机械行业标准JB T 8995.21999大电机、水轮机大尺寸公差与配合尺寸大于500mm至3150mm孔、轴公差带与配合Tolerances and
3、fits for largesize of largeelectrical machines and hydraulic turbinesTolerance stripsand fits for size of holesand shafts above 500 mm to 3150 mm国家机械工业局1999-08-06批准 2000-01-01实施1 范围 本标准规定了大电机、水轮机大尺寸孔、轴公差带与配合。 本标准适用于基本尺寸大于500mm至3150mm的公差带与配合。2 引用标准 下列标准包含的条文，通过在本标准中引用而构成为本标准的条文。在标准出版时，所示版本均为有效。所有标准都会
4、被修订，使用本标准的各方应探讨使用下列标准最新版本的可能性。 GB T 1800.21988 极限与配合 基础 第2部分：公差、偏差和配合的基本规定 GB T 1800.31988 极限与配合 基础 第3部分：标准公差和基本偏差数值表 JB T 8995.11999 大电机、水轮机大尺寸公差与配合 总论 标准公差与基本偏差3 特殊、优先、常用和一般用途的轴公差带 特殊、优先、常用和一般用途的轴公差带规定如下，相应的极限偏差见表1。虚线方框中的轴公差带为特殊的（用于配制配合），圆圈中的轴公差带为优先的，方框中的轴公差带为常用的。表1 轴 的 极 限 偏 差基本尺寸mm公 差 带 mdef大于至8
5、8.599.510111277.588.599.5010566.577.550056026026026026026026026014514514514514514514576767676765606303703954354805407009602152312552803203654251061201301461626307102902902902902902902901601601601601601601608080808080710800415445490540610790109024025828531536041048011513014216017880090032032032032032
6、032032017017017017017017017086868686869001000460495550600680880122026028531031540045053012614215617620110001120350350350350350350350195195195195195195195989898989811201250515560610680770101014003003253604054555256151441641802032281250140039039039039039039039022022022022022022022011011011011011014001
7、600585630700780890117016403453754154605306107201641882062352651600180043043043043043043043024024024024024024024012012012012012018002000660720800890103013501930390425470530610700840185212235270305200022404804804804804804804802602602602602602602601301301301301302240250076083092010401180158022304354805
8、106107008209602072402703053502500280052052052052052052052029029029029029029029014514514514514528003150850940106011801380187026205005606207108309501150238280310355415续表基本尺寸mm公 差 带 mffggh大于至88.59566.577.58566.577.588.599.510500560767676412222222222000000000056063018621125171667692108132304454708611013
9、517522028063071080808044242424242400000000007108002058235280797486104122149355062809812515520025032080090086868647262626262600000000009001000226261316878296116141166405670901151401752302803601000112098989852282828282800000000001120125026330835898941101331581934666821051601652102603304201250140011011
10、011057303030303000000000001400160030535042011110812615518522554789612615519524031039050016001800120120120623232323232000000000018002000350410490127124147182217262659211515018523029037046060020002240130130130663434343434000000000022402500410480570143144174209254314771101401752202803504405607002500280
11、014514514574383838383800000000002800315047556568516717320324830836893135165210270330420540660860续表基本尺寸mm公 差 带 mhjskm大于至111266.577.588.599.510111266.5766.575005600022273543556887110140220350445470708096560630440700000262626630710002531404962781001251602504005062808092110710800500800000303030800900002
12、835455870881151401802804505670909010412490010005609000003434341000112000334152658210513016521033052566821051061221451120125066010500004040401250140000394862789712015519525039062578961251261441731400160078012500004848481600180000465875921151451822303004607509211515015017320818002000920150000058585820
13、002240005570871101401752202803505508751101401751782082432240250011001750000686868250028000067.58210513516521027033043067510501351652102112412862800315013502100000767676续表基本尺寸mm公 差 带 mnprstu大于至66.5766.5766.5766.5766.5766.57500560889811412213214819420422032433435044445447064465467015015015028028028040
14、040040060060060056063044444478787819920922535436438049450452070471473015515515531031031045045045066066066063071010011213013815016822526725539040242055056258079080282017517517534034034050050050074074074071080050505088888823524726543044246061062264089090292018518518538038038056056056084084084080090011
15、212614615617019026628030048650052067669071099610101030210210210430430430620620620940940940900100056565610010010027629031052654056073675077011061120114022022022047047047068068068010501050105010001120132148171186202225316332355586602625846862885121612321255250250250520520520780780780115011501150112012
16、506666661201201203263423656466626859069229451366138214052602602605805805808408408401300130013001250140015617420321823626537839642571873676510381056108515281546157530030030064064064096096096014501450145014001600787878140140140408426455798816845112811461175167816961725330330330720720720105010501050160
17、016001600160018001842072422622853204624855209129359701292131513501942196520003703703708208208201200120012001850185018501800200092929217017017049251555010121035107014421465150020922115215040040040092092092013501350135020002000200020002240220250285305335370550580615111011401175161016401675241024402475
18、440440440100010001000150015001500230023002300224025001101101101951951955706006351210124012751760179018252610264026754604604601100110011001650165016502500250025002500280027030034537540545068571576013851415146020352065211030353065311055055055012501250125019001900190029002900290028003150135135135240240
19、2407157457901535156516102235226523103335336534105805805801400140014002100210021003200320032004 特殊、优先、常用和一般用途的孔公差带 特殊、优先、常用和一般用途的孔公差带规定如下，相应的极限偏差见表2。虚线方框中的孔公差带为特殊的（用于配制配合），圆圈中的孔公差带为优先的，方框中的孔公差带为常用的。表2 孔 的 极 限 偏 差基本尺寸mm公 差 带 mDEFG大于至88.599.510111288.5977.588.5966.577.5500560370395435480540700960255280
20、320146162186211251667692108560630260260260260260260260145145145767676767622222222630710415445490540610790109028531536016017820523528074861041227108002902902902902902902901601601608080808080242424248009004604955506006808801220310345400176201226261316829611614190010003203203203203203203201701701708686
21、868686262626261000112051556061068077010101400360405455203228263308358941101331581120125035035035035035035035019519519598989898982828282812501400585630700780890117016404154605302352653053504201081261551851400160039039039039039039039022022022011011011011011030303030160018006607208008901030135019304705
22、306102703053504104901241471822171800200043043043043043043043024024024012012012012012032323232200022407608309201040118015802230540610700305350410480570144174209254224025004804804804804804804802602602601301301301301303434343425002800850940106011801380187026206207108303554154755656851732032483082800315
23、052052052052052052052029029029014514514514514538383838续表基本尺寸mm公 差 带 mGHJS大于至88.59566.577.588.599.510111266.5750056013215719732445470861101351752202804407002227355606302222220000000000006307101491792243650628098125155200250320500800253140710800242424000000000000800900166201256405670901151401752302803
24、605609002835459001000262626000000000000100011201932382884766821051301652102603304206601050334152.511201250282828000000000000125014002252703405578961251551952403103905007801250394862.5140016003030300000000000001600180026232240265921151501852302903704606009201500465875180020003232320000000000002000224
25、03143844747811014017522028035044056070011001750557087.52240250034343400000000000025002800368458578961351652102703304205406608601350210067.58210528003150383838000000000000续表基本尺寸mm公 差 带 mJSKST大于至7.588.599.510111266.5766750056043556887.5110140220350000280400400324444470560630445470310450450354494520630
26、7104962.5781001251602504000003405005003905505807108005062803805605604306106408009005870881151401802804500560700904306206204866767109001000470680680526736770100011206582.5105130165210330525066082010552078078058684688511201250580840840646906945125014007897.51201551952503906250780960125640960960718103810851400160072010501050798112811751600180092115145