轴承精度等级 发布人：无锡博凯 发布时间：2010-10-20 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 revolving tolerance, Dimensional tolerance is a request when bearings are mounted on shafts or in housings. It includes bore/outerside diameter deviation from basic, inner ring/outer ring width deviation in single radial plane. Revolving tolerance includes radial and axial runout of assembled bearing inner ring and outer ring, inner ring reference fcace runout with bore and outside cylindrical surface runout with outer reference face. Tolerance class ranges from common class 0 to 6,5,4 and 2, from low to high, Table 1 below is the tolerance class stipulated in 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 国别 标准号 精度等级 中国 CHINA GB307 0（G） 6（E） 5（D） 4（C） 2（B） ISO ISO492 0 6 5 4 2 德国 GERMANY DIN 620/2 P0 P6 P5 P4 P2 美国 USA ANSI B3.14 ABEC1 ABEC3 ABEC5 ABEC7 ABEC9 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 axial direction before the bearing is mouted on a shaft or in a housing. According to the movement direction, ...
