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1、国别 标准号中国CHINA GB307 0（G） 6（E） 5（D） 4（C） 2（B）ISO ISO492 0 6 5 4 2德国GERMANYDIN620/2 P0 P6 P5 P4 P2美国 USA ANSIB3.14 ABEC1 ABEC3 ABEC5 ABEC7 ABEC9超过 到包括 最小 最大 最小 最大 最小 最大 最小over incl Min Max Min Max Min Max Min6 10 0 7 2 13 8 23 1410 18 0 9 3 18 11 25 1818 24 0 10 5 20 13 28 2024 30 1 11 5 20 13 23 23时间
2、：2008-03-28 16:03 Tolerance class ranges from common class 0 to 6,5,4 and 2, from low to high, Table 1 below is the tolerance class stipulatedin China GB307 and its comparison with some other standards.部分国家轴承精度等级对照表 COMPARISON OF TOLERANCE CLASS精度 TOLERANCE轴承的精度包括尺寸精度和旋转精度,尺寸精度是将轴承安装于轴或轴承箱时所要求的项目,它包
3、括内径、外径、宽度、倒角尺寸公差或允许值。几何精度包括内径偏差、平均内径差、外径偏差、平均外径差、套圈端面平行差的允许值。旋转精度是规定旋转时振摆的，包括内圈及外圈径向摆动和轴向摆动，内圈侧摆及外径面垂直度公差范围。轴承的精度等级从普通级0级到6级、5级、4级及2级，依次增高，下表1是中国GB307规定的精度等级与其他标准的比较。Bearing tolerance includes dimensional tolerance and revolving tolerance, Dimensional tolerance is a request when bearingsare mounted
4、on shafts or in housings. It includes bore/outerside diameter deviation from basic, inner ring/outer ring widthdeviation in single radial plane. Revolving tolerance includes radial and axial runout of assembled bearing inner ring andouter ring, inner ring reference fcace runout with bore and outside
5、 cylindrical surface runout with outer reference face.mmC2 CO C3国家轴承精度等级对照表精度等级轴承内径（d） C4游隙 CLEARANCE轴承的游隙是指轴承在未安装于轴或轴承箱之前的状态下，固定内圈或外圈的一方，使未固定的套圈做径向或轴向移动时套圈的移动量。根据移动方向，可分为径向游隙和轴向游隙。Bearing clearance means the value of displacement of the unfixed ring when it moves against the fixed ring in radial or
6、 axialdirection before the bearing is mouted on a shaft or in a housing. According to the movement direction, it falls into radialclearance and axial clearance.单列深沟球轴承的径向游隙 RADIAL CLEARANCE30 40 1 11 6 20 15 33 2840 50 1 11 6 23 18 36 30轴承公径内径dmm Z Z1 Z2 Z1 Z2 Z3 Z1 Z210 43 42 38 42 39 35 44 4012 44
7、 43 39 43 39 35 45 4015 45 44 40 44 41 36 46 4217 46 44 40 45 41 36 47 4220 47 45 41 46 42 38 48 4325 48 46 42 47 43 40 49 4430 49 47 43 48 44 41 50 4535 51 49 45 50 46 43 52 4740 53 51 46 52 47 44 54 4945 55 53 48 54 49 46 56 5150 57 54 50 55 51 48 57 53轴承公称内径d 低频带 中频带 高频带 低频带 中频带 高频带 低频带 中频带mm low
8、 band mid band highband low band mid band highband low band mid band单个轴承振动加速度极限值 VIBRATION(ACCELERATION) LIMITES FOR SINGLE BEARING dB振动 VIBRATION轴承振动是指轴承零件随时间而变化的弹性变形及除轴承功能所必需的运动以外的其它一切偏离理论位置的运动,它分为振动速度(dB)和振动速度( m/S)。振动动加速度分、和三级考核，其中级为基本级，、和依次表示轴承振动水平有低到高，具体要求见表。具体要求见表。由于振动速度测量更能显现轴承的加工水平和体现轴承的内在质
9、量，因而最为通用。单个轴承振动速度极限值 VIBRATION (VELOCITY)LIMTES FOR SINGLE BEARING m/s我们公司在对轴承振动速度值控制的同时，按电机轴承的要求，对轴承运转异声也实施严格的监控。Bearing vibration means bearing components elastic deformation that varies with time and all other movement that deviatesfrom a theoretic position except that necessary to bearing functi
10、ons. It has two modes-acceleration(dB)and velocity( m/S),Vibration acceleration is examined according to Z, Z4, Z2, and Z3 values. Grade Z is fundamental, Z1, Z2&Z3 successivelyindicate the vibration level ranges fron low to high. For detailed requirements, see Table3. Simlary, viaration velocity is
11、examined as per V, V1, V2&V3. Grade V is fundamental, V1, V2&V3 successively indicate the vibration level ranges from low tohigh. For details, see Table4. Generally, velocity examination is better than acceleration examination in that it can morereflect bearings manufacturing level and bearings inhe
12、rent quality.While our company keeps control of vibration velocity values, we also carry out vigorous control on abnormal noise fromrunning bearings in test according to requirements of electric motor quality bearings.直径系列（）Diameter Series(3)Diameter Series(1)10 160 120 100 140 100 85 90 60V V1 V2直径
13、系列（）Diameter Series(2)直径系列（）10 160 120 100 140 100 85 90 60最大Max29333641时间：2008-03-28 16:03 Tolerance class ranges from common class 0 to 6,5,4 and 2, from low to high, Table 1 below is the tolerance class stipulatedin China GB307 and its comparison with some other standards.部分国家轴承精度等级对照表 COMPARISON
14、 OF TOLERANCE CLASS精度 TOLERANCE轴承的精度包括尺寸精度和旋转精度,尺寸精度是将轴承安装于轴或轴承箱时所要求的项目,它包括内径、外径、宽度、倒角尺寸公差或允许值。几何精度包括内径偏差、平均内径差、外径偏差、平均外径差、套圈端面平行差的允许值。旋转精度是规定旋转时振摆的，包括内圈及外圈径向摆动和轴向摆动，内圈侧摆及外径面垂直度公差范围。轴承的精度等级从普通级0级到6级、5级、4级及2级，依次增高，下表1是中国GB307规定的精度等级与其他标准的比较。Bearing tolerance includes dimensional tolerance and revolvi
15、ng tolerance, Dimensional tolerance is a request when bearingsare mounted on shafts or in housings. It includes bore/outerside diameter deviation from basic, inner ring/outer ring widthdeviation in single radial plane. Revolving tolerance includes radial and axial runout of assembled bearing inner r
16、ing andouter ring, inner ring reference fcace runout with bore and outside cylindrical surface runout with outer reference face.国家轴承精度等级对照表C4游隙 CLEARANCE轴承的游隙是指轴承在未安装于轴或轴承箱之前的状态下，固定内圈或外圈的一方，使未固定的套圈做径向或轴向移动时套圈的移动量。根据移动方向，可分为径向游隙和轴向游隙。Bearing clearance means the value of displacement of the unfixed ring when it moves against the fixed ring in radial or axialdirection before the bearing is mouted on a shaft or in a housing. According to the movemen
