向心轴承的公差是指确定尺寸精确程度,即尺寸允许的变动范围,向心轴承精度等级分别为P0,P6,P5,P4,P2级,P0级为普通级,相应精度等级依次提高,各种精度的轴承在加工过程中分离不同,在使用价值上也不同。
表1、表2是我司生产的P0级陶瓷轴承、不锈钢轴承、轴承钢轴承(不包含塑料轴承、铜轴承)的公差及公差值,如需P6,P5,P4级公差的产品请咨询我司;表3是我司生产的塑料轴承、铜轴承的公差及公差值。
陶瓷轴承、不锈钢轴承、轴承钢轴承公差表1 P0级公差内圈(适用于陶瓷轴承、不锈钢轴承、轴承钢轴承)极限偏差和公差值单位为um
| d(mm) |
△dmp |
Vdsp |
Vdmp |
Kia |
△Bs |
VBS |
| 直径系列 |
全部正常 |
修正 |
| 9 |
0,1 |
2,3,4 |
| 超过 |
到 |
上偏差 |
下偏差 |
max |
max |
max |
上偏差 |
下偏差 |
| - |
0.6 |
0 |
-8 |
10 |
8 |
6 |
6 |
10 |
0 |
-40 |
- |
12 |
| 0.6 |
2.5 |
0 |
-8 |
10 |
8 |
6 |
6 |
10 |
O |
-40 |
- |
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 |
-250 |
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 |
25 |
25 |
15 |
15 |
25 |
0 |
-200 |
-380 |
25 |
| 120 |
180 |
O |
-25 |
31 |
31 |
19 |
19 |
30 |
0 |
-250 |
-500 |
30 |
| 180 |
250 |
O |
-30 |
38 |
38 |
23 |
23 |
40 |
0 |
-300 |
-500 |
30 |
| 250 |
315 |
0 |
-35 |
44 |
44 |
26 |
26 |
50 |
0 |
-350 |
-500 |
35 |
表2 P0级公差外圈(适用于陶瓷轴承、不锈钢轴承、轴承钢轴承)极限偏差和公差值单位为um
| D(mm) |
△Dmp |
Vdsp |
VDmp |
Kea |
△Cs △Cls |
VCS VCls |
| 开形轴承 |
闭形轴承 |
| 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 |
max |
上偏差 |
下偏差 |
| - |
2.5 |
0 |
-8 |
10 |
8 |
6 |
10 |
6 |
15 |
与同一轴承内圈的△BS及VBS相同 |
| 2.5 |
6 |
0 |
-8 |
10 |
8 |
6 |
10 |
6 |
15 |
| 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 |
| 150 |
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 |
| 315 |
400 |
0 |
-40 |
50 |
50 |
30 |
- |
30 |
70 |
表3塑料轴承、铜轴承的内外圈内径外径高度公差
| 材料 |
内径d |
外径D |
高度B |
| PEEK |
+0.05 / 0 |
0 / -0.05 |
0 / -0.12 |
| PPS |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| POM |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PVDF |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PP |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PET |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| HDPE(PE) |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| UHMW-PE(UPE) |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PC |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PA |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PMMA |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PI |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| Cu |
+0.1 / 0 |
0 / -0.1 |
0 / -0.12 |
| PTFE |
+0.2 / 0 |
0 / -0.2 |
0 / -0.2 |