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【英文标准名称】:Non-solderingcompressionfittings;24coneconnectorswithO-ring,swivelruntees;adjustable,fordesignandtypeofportendWaccordingtoDIN3861
【原文标准名称】:非焊管螺纹连接件.带24度密封锥和O型环的弯头.符合DIN3861W型孔的方向调节
【标准号】:DIN3944-1994
【标准状态】:作废
【国别】:德国
【发布日期】:1994-05
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:L形管;L形管节头;尺寸;设计;锥形接管;作标记;名称与符号;管道配件;配件;无焊的;弯头;压合接头;材料;活接头;可调的;重量;砝码;O型密封圈;喷嘴;规范(批准)
【英文主题词】:fittings;o-rings;dimensions;materials;specification(approval);weights;compressionfittings;adjustable;nozzles;design;solderless;l-adapters;ells;designations;conicalnipples;pipefittings;elbows(pipe
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:2960
【页数】:4P;A4
【正文语种】:德语


【英文标准名称】:Rollingbearings-Dynamicloadratingsandratinglife
【原文标准名称】:滚动轴承.额定动载荷和额定寿命
【标准号】:ISO281-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC4
【标准类型】:()
【标准水平】:()
【中文主题词】:轴向止推轴承;滚珠轴承;轴承;定义;动力载荷;寿命;荷载能力;额定负荷;负荷;数学计算;计算方法;径向轴承;额定值;滚柱轴承;滚动轴承;符号;止推轴承
【英文主题词】:Axial-thrustbearings;Ballbearings;Bearings;Definitions;Dynamicloading;Life(durability);Loadcapacity;Loadratings;Loading;Mathematicalcalculations;Methodsofcalculation;Radialbearings;Ratings;Rollerbearings;Rollingbearings;Symbols;Thrustbearings
【摘要】:ThisInternationalStandardspecifiesmethodsofcalculatingthebasicdynamicloadratingofrollingbearingswithinthesizerangesshownintherelevantISOpublications,manufacturedfromcontemporary,commonlyused,highqualityhardenedbearingsteel,inaccordancewithgoodmanufacturingpracticeandbasicallyofconventionaldesignasregardstheshapeofrollingcontactsurfaces.Thisdocumentalsospecifiesmethodsofcalculatingthebasicratinglife,whichisthelifeassociatedwith90%reliability,withcommonlyusedhighqualitymaterial,goodmanufacturingqualityandwithconventionaloperatingconditions.Inaddition,itspecifiesmethodsofcalculatingthemodifiedratinglife,inwhichvariousreliabilities,lubricationcondition,contaminatedlubricantandfatigueloadofthebearingaretakenintoaccount.ThisInternationalStandarddoesnotcovertheinfluenceofwear,corrosionandelectricalerosiononbearinglife.Thisdocumentisnotapplicabletodesignswheretherollingelementsoperatedirectlyonashaftorhousingsurface,unlessthatsurfaceisequivalentinallrespectstothebearingring(orwasher)racewayitreplaces.Double-rowradialbearingsanddouble-directionthrustbearingsare,whenreferredtointhisdocument,presumedtobesymmetrical.Furtherlimitationsconcerningparticulartypesofbearingsareincludedintherelevantclauses.
【中国标准分类号】:J11
【国际标准分类号】:21_100_20
【页数】:51P;A4
【正文语种】:英语