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ICS21.100.20J11JB/T7919.3－1999neqISO2982–2∶1995滚动轴承附件锁紧螺母和锁紧装置Rollingbearings–Accessories—Locknutsandlockingdevices1999-06-28发布2000-01-01实施国家机械工业局发布()I前言1范围····················································································································································································································12引用标准·········································································································································································································13术语····················································································································································································································14符号····················································································································································································································15代号方法·········································································································································································································46标记····················································································································································································································57尺寸·················································································································································································································58技术要求·······································································································································································································129测量方法·······································································································································································································1410标志···············································································································································································································1511检验规则·····································································································································································································1512包装···············································································································································································································15附录A（标准的附录）宽系列锁紧螺母及带弯内爪的锁紧垫圈尺寸和公差·······················································16JB/T7919.3－1999目次()II前言本标准非等效采用ISO2982–2∶1995《滚动轴承附件锁紧螺母和锁紧装置》。标准中补充了ISO标准未规定的技术条件。本标准是将JB/T7919.4—95《滚动轴承附件锁紧螺母基本尺寸》、JB/T7919.5—95《滚动轴承附件锁紧垫圈基本尺寸》、JB/T7919.6—95《滚动轴承附件锁紧卡基本尺寸》、JB/T7919.7—95《滚动轴承附件锥形衬套、锁紧螺母和锁紧垫圈技术条件》（部分）、JB/T7916—95《滚动轴承用锁紧螺母（宽系列）及带弯内爪的锁紧垫圈》五个标准合并，并作了修改，修改的主要内容为：——增加了大于500~1060mm的尺寸段；——在锁紧螺母中增加了适用的锁紧垫圈和锁紧卡型号；——修改了部分尺寸的公差值。本标准自实施之日起代替JB/T7919.4~7919.6—95、JB/T7919.7—95（部分）、JB/T7916—95。本标准的附录A是标准的附录。本标准由全国滚动轴承标准化技术委员会提出并归口。本标准起草单位：洛阳轴承研究所。本标准主要起草人：郭宝霞、李飞雪、陈原。JB/T7919.3－199911范围本标准规定了锁紧螺母（简称螺母）、锁紧装置的尺寸、技术要求、验收规则和测量方法等。本标准适用于锥形衬套用螺母和锁紧装置的设计、生产、检验和用户验收。2引用标准下列标准所包含的条文，通过在本标准中引用而构成为本标准的条文。本标准出版时，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昀新版本的可能性。GB/T192—1981普通螺纹基本牙型GB/T196—1981普通螺纹基本尺寸（直径1~600mm）GB/T272—1993滚动轴承代号方法GB/T699—1988优质碳素结构钢技术条件GB/T1804—1992一般公差线性尺寸的未注公差GB/T2516—1981普通螺纹偏差表（直径1~355mm）GB/T5796.1—1986梯形螺纹牙型GB/T5796.3—1986梯形螺纹基本尺寸GB/T5796.4—1986梯形螺纹公差GB/T6930—1986滚动轴承词汇GB/T8597—1988滚动轴承包装JB/T3574—1997滚动轴承产品标志JB/T8921—1999滚动轴承及其商品零件检验规则3术语本标准采用的术语符合GB/T6930的规定。4符号4.1锁紧螺母（见图1）国家机械工业局1999-06-28批准中华人民共和国机械行业标准滚动轴承附件锁紧螺母和锁紧装置Rollingbearings–Accessories—LocknutsandlockingdevicesJB/T7919.3－1999neqISO2982–2∶1995代替JB/T7919.4~7919.6—95JB/T7916—95部分代替JB/T7919.7—952000-01-01实施JB/T7919.3－19992图1锁紧螺母d：螺母螺纹公称直径d1：螺母端面30°倒角直径d2：螺母公称外径B：螺母宽度b：螺母锁紧槽宽度h：螺母锁紧槽深度d6：螺母端面内倒角直径g：螺母锁紧槽根部直径r1max：螺母锁紧槽根部倒角尺寸的昀大值l：螺母端面螺孔深度s：螺母端面螺孔基本直径dp：螺母端面螺孔中心圆直径Δd1s：螺母d1的单一直径偏差Δd2s：螺母外径偏差JB/T7919.3－19993ΔBs：螺母宽度偏差Δbs：螺母锁紧槽宽度偏差Δhs：螺母锁紧槽深度偏差Sd：螺母基准端面（30°倒角端面）圆跳动VBs：螺母宽度变动量4.2锁紧垫圈（见图2）直内爪弯内爪图2锁紧垫圈d3：锁紧垫圈内径d4：锁紧垫圈外爪的根部直径d5：锁紧垫圈外径B1：锁紧垫圈厚度B2：弯内爪凸出量M：直（弯）内爪与垫圈内孔表面间的距离，M=d3–内爪高度f：锁紧垫圈外爪宽度f1：锁紧垫圈内爪宽度N：锁紧垫圈外爪数r2：锁紧垫圈弯内爪根部的倒角尺寸Δd3s：锁紧垫圈内径偏差Δd4s：锁紧垫圈外爪根部直径偏差ΔB1s：锁紧垫圈厚度偏差ΔB2s：锁紧垫圈弯内爪凸出量偏差Δfs：锁紧垫圈外爪宽度偏差Δf1s：锁紧垫圈内爪宽度偏差ΔMs：锁紧垫圈M的偏差VB1s：锁紧垫圈厚度变动量4.3锁紧卡（见图3）JB/T7919.3－19994图3锁紧卡d7：锁紧卡螺钉用孔直径B3：锁紧卡壁厚B4：锁紧卡宽度L1：锁紧卡内壁宽度L2：锁紧卡高度L3：锁紧卡长度L4：螺纹长度ΔB4s：锁紧卡宽度偏差ΔL2s：锁紧卡高度偏差5代号方法螺母、锁紧垫圈和锁紧卡的代号均由类型代号、尺寸系列代号和表示螺母公称直径的直径代号组成，并按此顺序排列。5.1类型代号类型代号用下列字母表示：KM—螺母类型代号，表示公制普通螺纹HM—螺母类型代号，表示公制梯形螺纹MB—锁紧垫圈类型代号，表示直内爪MBA—锁紧垫圈类型代号，表示内爪向内弯MBB—锁紧垫圈类型代号，表示内爪向外弯MS—锁紧卡类型代号5.2尺寸系列代号尺寸系列代号用字母L表示30系列，W表示宽系列，其他系列省略。5.3直径代号表示螺母公称直径的直径代号按GB/T272中轴承内径的规定。5.4代号示例JB/T7919.3－19995KML08MBAL08MSL486标记标记示例：公称直径为40mm的螺母，标记为：KM08JB/T7919.3—1999对应的螺母公称直径为40m