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Home > Engineering Data > Tolerance of Bearings

Tolerance of Bearings

1) Symbols for boundary dimensions and running accuracy

Inner ring:
d = Nominal bore diameter
ĶĪdmp = Single plane mean bore diameter deviation
Vdp = Single radial plane bore diameter variation
Vdmp = Mean single plane bore diameter variation
Kia = Inner ring radial runout
Sd = Face runout with bore
Sia = Inner ring axial runout (with side)
ĶĪBs = Inner ring width deviation
VBs = Inner ring width varietion

Outer ring:
D = Nominal outside diameter
ĶĪDmp = Single plane mean outside diameter deviation
VDp = Single radial plane outside diameter variation
VDmp = Mean single plane outside diameter variation
Kea = Outer ring radial runout
SD = Outside surface inclination
Sea = Outside ring axial runout
ĶĪCs = Outer ring width deviation
VCs = Outer ring width variation

2) Tolerance of inner ring

Unit ĶĖm
d (mm)
ĶĪdmp
Vdp
Series 68, 69
Series 60
Series 62, 63
P0
P6
P5
P4
P0
P6
P5
P4
P0
P6
P5
P4
P0
P6
P5
P4
over incl.
high low
high low
high low
high low
max
max
max
2.5 - 10
0 - 8
0 - 7
0 - 5
0 - 4
10
9
5
4
8
7
4
3
6
5
4
3
10 - 18
0 - 8
0 - 7
0 - 5
0 - 4
10
9
5
4
8
7
4
3
6
5
4
3
18 - 30
0 - 10
0 - 8
0 - 6
0 - 5
13
10
6
5
10
8
5
4
8
6
5
4
30 - 50
0 - 12
0 - 10
0 - 8
0 - 6
15
13
8
6
12
10
6
5
9
8
6
5
50 - 80
0 - 15
0 - 12
0 - 9
0 - 7
19
15
9
7
19
15
7
5
11
9
7
5
80 - 120
0 - 20
0 - 15
0 - 10
0 - 8
25
19
10
8
25
19
8
6
15
11
8
6
120 - 180
0 - 25
0 - 18
0 - 13
0 - 10
31
23
13
10
31
23
10
8
19
14
10
8

d (mm)
Vdmp
Kia
Sd
Sia
ĶĪBs
VBs
P0
P6
P5
P4
P0
P6
P5
P4
P0
P6
P5
P4
P0,P6
P5,P4
P0
P6
P5
P4
over incl.
max
max
max
max
high low
high low
max
2.5 - 10
6
5
3
2
10
6
4
3
7
3
7
3
0 - 120
0 - 40
15
15
5
3
10 - 18
6
5
3
2
10
7
4
3
7
3
7
3
0 - 120
0 - 80
20
20
5
3
18 - 30
8
6
3
3
13
8
4
3
8
4
8
4
0 - 120
0 - 120
20
20
5
3
30 - 50
9
8
4
3
15
10
5
4
8
4
8
4
0 - 120
0 - 120
20
20
5
3
50 - 80
11
9
5
4
20
10
5
4
8
5
8
5
0 - 150
0 - 150
25
25
6
4
80 - 120
15
11
5
4
25
13
6
5
9
5
9
5
0 - 200
0 - 200
25
25
7
4
120 - 180
19
14
7
5
30
18
8
6
10
6
10
7
0 - 250
0 - 250
30
30
8
5

3) Tolerance of outer ring

Unit ĶĖm
d (mm)
ĶĪDmp
VDp
VDmp
62,63
60,62,63
P0
P6
P5
P4
P0
P6
P0
P6
P5
P4
high low
high low
high low
high low
max
max
18 - 30
0 - 9
0 - 8
0 - 6
0 - 5
12
10
7
6
3
2.5
30 - 50
0 - 11
0 - 9
0 - 7
0 - 6
16
13
8
7
4
3
50 - 80
0 - 13
0 - 11
0 - 9
0 - 7
20
16
10
8
5
3.5
80 - 120
0 - 15
0 - 13
0 - 10
0 - 8
26
20
11
10
5
4
120 - 150
0 - 18
0 - 15
0 - 11
0 - 9
30
25
14
11
6
5
150 - 180
0 - 25
0 - 18
0 - 13
0 - 10
38
30
19
14
7
5
180 - 250
0 - 30
0 - 20
0 - 15
0 - 11
45
35
23
15
8
6

d (mm)
Kea
SD
Sea
ĶĪCs
VCs
P0
P6
P5
P4
P5
P4
P5
P4
P0,P6,P5,P4
P0
P6
P5
P4
max
max
max
high low
max
18 - 30
15
9
6
4
8
4
8
5
 Identical to ĶĪBs of inner ring of same bearing Identical to VBs of inner ring of same bearing
5
2.5
30 - 50
20
10
7
5
8
4
8
5
5
2.5
50 - 80
25
13
8
5
8
4
10
5
6
3
80 - 120
35
18
10
6
9
5
11
6
8
4
120 - 150
40
20
11
7
10
5
13
7
8
5
150 - 180
45
23
13
8
10
5
14
8
8
5
180 - 250
50
25
15
10
11
7
15
10
10
7

 

 

 
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