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Location:首页 > Technical parameter

公差

2017-12-18 16:59:52

有关滚动轴承主要尺寸的公差,公差值及旋转精度,在GB及ISO标准中均有所规定。轴承精度等级除普通精度PO级之外,有P6,P5,P4级,精度等级依次提高。这些精度均按ISO规格。表1,2列我公司生产PO级陶瓷轴承及不锈钢轴承(不包括塑料轴承)相应公差及公差值,有关P6,P5。P4级公差请与本公司联系。
塑料轴承因加工精度及本身尺寸稳定性限制(热膨胀系数远大于陶瓷及金属材质)按低于PO级公差生产。表3列出我公司生产的塑料轴承相应的公差值。
 

陶瓷轴承和不锈钢轴承公差

表1 P0级公差内圈(适用陶瓷轴承和不锈钢轴承)
 d(mm) △dmp     Vdp2)   VdmP    Kia      △Bs  VBS
    直径系列 
    9   0,1  2,3,4   全部      正常  修正 
超过  到  上偏差  下偏差     maX   max   max 上偏差    下偏差 
0.61) 2.5 0 -8   10
 
8 6 6 10 O -40 -250 12
2.5  10
 
0 -8   10
 
8 6 6 10 O -120 -250 15
10  18  0 8   10  8 6 6 10 O -120   20
18 30 0 -10   13   10 8 8 13 0 -120 -250   20
30 50 0 -12   15   12 9 9 15 0 -120 -250   20
50 80 0 -15   19    19  11 11 20 0 -150 -380   25 
80   120
 
0 -20   21
 
  21
 
15   15
 
  25
 
0 -200 -380   25
 
120   180
 
O -25   35
 
  35
 
19   19
 
  30
 
0 -250 -500   30
 
180   250  O -30   38    38  23   23    40  0 -300 -500   30 

 
表2 P0级公差外圈(适用陶瓷轴承和不锈钢轴承)
  D(mm) △Dmp     Vdp2)  VDmp4)
Kea
△Cs    △CIs
VCS   VCis
开形轴承     闭形s)轴承 
    直径系列 
9  0,1   2,3,4   2,3,4 
超过   到  上偏差  下偏差     max    max    max  上偏差  下偏差 
  2.51) 6 0 -8 10 8 6 10 6 15 与同一轴承内圈的△BS及VBS相同
6 18 0 -8 10 8 6 10 6 15
18 30 0 -9 12 9 7 12 7 15
30 50 0 -11 14 11 8 16 8 20
50 80 0 -13 16 13 10 20 10 25
80 120 0 -15 19 19 11 26 11 35
120 150 0 -18 23 23 14 30 14 40
250 180 0 -25 31 31 19 38 19 45
180 250 0 -30 38 38 23  
 
23 50
250 315 0 -35 44 44 26   26 60

 

表3塑料轴承的内外圈公差
材料 外径D  内径d   高度W
PEEK 0/-0.05 +0.05/0 0/-0.12
POM 0/-0.1 +0.1/0 0/-0.12
PP
 
0/-0.1 +0.1/0 0/-0.12
PVDF  0/-0.1 +0.1/0 0/-0.12
PE 0/-0.1 +0.1/0 0/-0.12
UPE 0/-0.2 +0.2/0 0/-0.2
PTFE 0/-0.2 +0.2/0 0/-0.2
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