JBT 8995.1~3－1999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 - JB 系列-.doc

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 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88.599.510111277.588.599.5010566.577.550056026026026026026026026014514514514514514514576767676765606303703954354805407009602152312552803203654251061201301461626307102902902902902902902901601601601601601601608080808080710800415445490540610790109024025828531536041048011513014216017880090032032032032032032032017017017017017017017086868686869001000460495550600680880122026028531031540045053012614215617620110001120350350350350350350350195195195195195195195989898989811201250515560610680770101014003003253604054555256151441641802032281250140039039039039039039039022022022022022022022011011011011011014001600585630700780890117016403453754154605306107201641882062352651600180043043043043043043043024024024024024024024012012012012012018002000660720800890103013501930390425470530610700840185212235270305200022404804804804804804804802602602602602602602601301301301301302240250076083092010401180158022304354805106107008209602072402703053502500280052052052052052052052029029029029029029029014514514514514528003150850940106011801380187026205005606207108309501150238280310355415续表基本尺寸mm公 差 带 mffggh大于至88.59566.577.58566.577.588.599.510500560767676412222222222000000000056063018621125171667692108132304454708611013517522028063071080808044242424242400000000007108002058235280797486104122149355062809812515520025032080090086868647262626262600000000009001000226261316878296116141166405670901151401752302803601000112098989852282828282800000000001120125026330835898941101331581934666821051601652102603304201250140011011011057303030303000000000001400160030535042011110812615518522554789612615519524031039050016001800120120120623232323232000000000018002000350410490127124147182217262659211515018523029037046060020002240130130130663434343434000000000022402500410480570143144174209254314771101401752202803504405607002500280014514514574383838383800000000002800315047556568516717320324830836893135165210270330420540660860续表基本尺寸mm公 差 带 mhjskm大于至111266.577.588.599.510111266.5766.575005600022273543556887110140220350445470708096560630440700000262626630710002531404962781001251602504005062808092110710800500800000303030800900002835455870881151401802804505670909010412490010005609000003434341000112000334152658210513016521033052566821051061221451120125066010500004040401250140000394862789712015519525039062578961251261441731400160078012500004848481600180000465875921151451822303004607509211515015017320818002000920150000058585820002240005570871101401752202803505508751101401751782082432240250011001750000686868250028000067.58210513516521027033043067510501351652102112412862800315013502100000767676续表基本尺寸mm公 差 带 mnprstu大于至66.5766.5766.5766.5766.5766.575005608898114122132148194204220324334350444454470644654670150150150280280280400400400600600600560630444444787878199209225354364380494504520704714730155155155310310310450450450660660660630710100112130138150168225267255390402420550562580790802820175175175340340340500500500740740740710800505050888888235247265430442460610622640890902920185185185380380380560560560840840840800900112126146156170190266280300486500520676690710996101010302102102104304304306206206209409409409001000565656100100100276290310526540560736750770110611201140220220220470470470680680680105010501050100011201321481711862022253163323555866026258468628851216123212552502502505205205207807807801150115011501120125066666612012012032634236564666268590692294513661382140526026026058058058084084084013001300130012501400156174203218236265378396425718736765103810561085152815461575300300300640640640960960960145014501450140016007878781401401404084264557988168451128114611751678169617253303303307207207201050105010501600160016001600180018420724226228532046248552091293597012921315135019421965200037037037082082082012001200120018501850185018002000929292170170170492515550101210351070144214651500209221152150400400400920920920135013501350200020002000200022402202502853053353705505806151110114011751610164016752410244024754404404401000100010001500150015002300230023002240250011011011019519519557060063512101240127517601790182526102640267546046046011001100110016501650165025002500250025002800270300345375405450685715760138514151460203520652110303530653110550550550125012501250190019001900290029002900280031501351351352402402407157457901535156516102235226523103335336534105805805801400140014002100210021003200320032004 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88.599.510111288.5977.588.5966.577.5500560370395435480540700960255280320146162186211251667692108560630260260260260260260260145145145767676767622222222630710415445490540610790109028531536016017820523528074861041227108002902902902902902902901601601608080808080242424248009004604955506006808801220310345400176201226261316829611614190010003203203203203203203201701701708686868686262626261000112051556061068077010101400360405455203228263308358941101331581120125035035035035035035035019519519598989898982828282812501400585630700780890117016404154605302352653053504201081261551851400160039039039039039039039022022022011011011011011030303030160018006607208008901030135019304705306102703053504104901241471822171800200043043043043043043043024024024012012012012012032323232200022407608309201040118015802230540610700305350410480570144174209254224025004804804804804804804802602602601301301301301303434343425002800850940106011801380187026206207108303554154755656851732032483082800315052052052052052052052029029029014514514514514538383838续表基本尺寸mm公 差 带 mGHJS大于至88.59566.577.588.599.510111266.5750056013215719732445470861101351752202804407002227355606302222220000000000006307101491792243650628098125155200250320500800253140710800242424000000000000800900166201256405670901151401752302803605609002835459001000262626000000000000100011201932382884766821051301652102603304206601050334152.511201250282828000000000000125014002252703405578961251551952403103905007801250394862.514001600303030000000000000160018002623224026592115150185230290370460600920150046587518002000323232000000000000200022403143844747811014017522028035044056070011001750557087.52240250034343400000000000025002800368458578961351652102703304205406608601350210067.58210528003150383838000000000000续表基本尺寸mm公 差 带 mJSKST大于至7.588.599.510111266.5766750056043556887.51101402203500002804004003244444705606304454703104504503544945206307104962.5781001251602504000003405005003905505807108005062803805605604306106408009005870881151401802804500560700904306206204866767109001000470680680526736770100011206582.5105130165210330525066082010552078078058684688511201250580840840646906945125014007897.5120155195250390625078096012564096096071810381085140016007201050105079811281175160018009211514518523030046075009201150150820120012009121292135018002000920135013501012144215002000224011014017522028035055087501100140017510001500150011101610167522402500110016501650121017601825250028001351652102703304306751050013501650210125019001900138520352110280031501400210021001535223523105 基孔制优先和常用配合 基孔制优先和常用配合规定于表3。表3 基孔制优先和常用配合基准孔轴deffgghjskmnprstu间隙配合进渡配合过盈配合H5H6H7H8H9H10H11H12 注： 1 带“*”用于配制配合，配制配合亦可选用基轴制的同名配合，即、 2 带“”为优先配合。6 混合配合 为满足间隙、大过盈配合的要求，本标准推荐一部分混合配合（即任意孔、轴公差带组成的配合）见表4。表4 混合配合（推荐）孔轴defghrstu间 隙 配 合过 盈 配 合D11D12G6G6.5G7G7.5G8G8.5G9K6K6.5K7S6T6T77 按间隙或过盈计算孔、轴公差带 按间隙或过盈计算孔、轴公差带见附录A（标准的附录）。附 录 A（标准的附录）按间隙或过盈计算孔、轴公差带 本附录是为选用配合而提供的，适用于基孔制或基轴制的同级配合。 根据间隙量，过盈量可以用以下计算式，选出相应的孔、轴公差带及配合。A1 间隙配合 （A1） （A2）A2 过盈配合 （A3） （A4）A3 过渡配合 （A5）A3.1 基孔制轴的基本偏差标准公差最大间隙 （A6）A3.2 基轴制孔的基本偏差最大间隙标准公差 （A7） 注：当以上计算式用于孔的标准公差比轴低一级的配合时，将计算式的分母2改为2.6，即可选出轴的标准公差及确定出孔的公差等级。另外也可将计算式的分母2改为1.6， 先选出孔的标准公差然后再确定出轴的公差等级。