中文|English
中文|English

Radial Clearance

Radial Clearance

    In order to prevent the bearing from malfunctioning, all parts of the bearing, say, the inner ring and the axle, the housing and the housing bore, should be kept in good coordination. The picture as below, which is based on the China National Standard, shows fits among the bearing, the axle and the housing. All the columns marked g6, h6, etc. indicate the range of diameters and tolerances for the axle and housing that meet different loose or tight fit requirements at different load and rotating speed.
    The fit of the bearing and shaft is based on the bore, while that of the bearing and housing is based on the shaft. The fit between the bearing and shaft is different from the tolerance fitting system applied in the manufacturing industry, consequently the bearing bore tolerance is usually in minus values. Under this conditions, the fit is tighter than usual.

 

Table 1,Bearing and shaft fit of 0 grade tolerance spherical roller bearing(except tapered roller bearing)

Bore
d(mm)
Shaft tolerance scale
g6
g5
h6
h5
j5
j6
js6
Clearance or interference
Over
Incl.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
3
6
12
4
9
4
8
8
5
8
2
11
2
14
4
12
6
10
14
3
11
3
9
8
6
8
2
12
2
15
4.5
12.5
10
18
17
2
14
2
11
8
8
8
3
13
3
16
5.5
13.5
18
30
20
3
16
3
13
10
9
10
4
15
4
19
6.5
16.5
30
50
25
3
20
3
16
12
11
12
5
18
5
23
8
20
50
80
29
5
23
5
19
15
13
15
7
21
7
27
9.5
24.5
80
120
34
8
27
8
22
20
15
20
9
26
9
33
11
31
120
140 160
140
160
180
39
11
32
11
25
25
18
25
11
32
11
39
12.5
37.5
180
200
225
200
225
250
44
15
35
15
29
30
20
30
13
37
13
46
14.5
44.5
250
280
280
315
49
18
40
18
32
35
23
35
16
42
-
-
16
51
315
355
355
400
54
22
43
22
36
40
25
40
18
47
-
-
18
58
400
450
450
500
60
25
47
25
40
45
27
45
20
52
-
-
20
65

Bore
d(mm)
Shaft tolerance scale
k5
k6
m5
k6
n6
p6
r6
r7
Interference
Over
Incl.
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
3
6
1
14
1
17
4
17
4
20
8
24
12
28




6
10
1
15
1
18
6
20
6
23
10
27
15
32




10
18
1
17
1
20
7
23
7
26
12
31
18
37




18
30
2
21
2
25
8
27
8
31
15
38
22
45




30
50
2
25
2
30
9
32
9
37
17
45
26
54




50
80
2
30
2
36
11
39
11
45
20
54
32
68




80
120
3
38
3
45
13
48
13
55
23
65
37
79




120
140
160
140
160
180
3
46
3
53
15
58
15
65
27
77
43
93
63
65
68
113
115
118


180
200
225
200
225
250
4
54
4
53
17
67
17
76
31
90
50
109
77
80
84
136
139
143
77
80
84
153
156
160
250
280
280
315
4
62
4
71
20
78
20
87
34
101
58
123
94
98
161
165
94
98
181
185
315
355
355
400
4
69
4
80
21
86
21
97
37
113
62
138
108
114
184
190
108
114
205
211
400
450
450
500
5
77
5
90
23
95
23
108
40
125
68
153
126
132
211
217
126
132
234
240

Table 2,Bearing and housing fit of 0 grade tolerance spherical roller bearing(except tapered roller bearing)
Bore
d(mm)
Bore tolerance scale
G7
H8
H7
H6
J7
J6
JS7
JS6
Clearance
Clearance or interference
Over
Incl.
Max
Min
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
10
18
32
6
35
0
26
0
19
0
18
8
14
5
17
9
13.5
5.5
18
30
37
7
42
0
30
0
22
0
21
9
17
5
19
10
15.5
6.5
30
50
45
9
50
0
36
0
27
0
25
11
21
6
23
12
19
8
50
80
53
10
59
0
43
0
32
0
31
12
26
6
28
15
22.5
9.5
80
120
62
12
69
0
50
0
37
0
37
13
31
6
32
17
26
11
120
150
72
14
81
0
58
0
43
0
44
14
36
7
38
20
30.5
12.5
150
180
79
14
88
0
65
0
50
0
51
14
43
7
45
20
37.5
12.5
180
250
91
15
102
0
76
0
59
0
60
16
52
7
53
23
44.5
14.5
250
315
104
17
116
0
87
0
67
0
71
16
60
7
61
26
51
16
315
400
115
18
129
0
97
0
76
0
79
18
69
7
68
28
58
18
400
500
128
20
142
0
108
0
85
0
88
20
73
7
76
31
65
20

Bore
d(mm)
Bore tolerance scale
K6
K7
M6
M7
N6
N7
P6
P7
Clearance or interference
Interference
Over
Incl.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Min
Max
Min
Max
10
18
10
9
14
12
4
15
8
18
-1
20
3
23
7
26
3
29
18
30
11
11
15
15
5
17
9
21
-2
24
2
28
9
31
5
35
30
50
14
13
18
18
7
20
11
25
-1
28
3
33
10
37
6
42
50
80
17
15
22
21
8
24
13
30
-1
33
4
39
13
45
8
51
80
120
19
18
25
25
9
28
15
35
-1
38
5
45
15
52
9
59
120
150
22
21
30
28
10
33
18
40
-2
45
6
52
18
61
10
68
150
180
29
21
37
28
17
33
25
40
5
45
13
52
11
61
3
68
180
250
35
24
43
33
22
37
30
46
8
51
16
60
11
70
3
79
250
315
40
27
51
36
26
41
35
52
10
57
21
66
12
79
1
88
315
400
47
29
57
40
30
46
40
57
14
62
24
73
11
87
1
98
400
500
53
32
63
45
35
50
45
63
18
67
28
80
10
95
0
108

Table 3, Bearing and shaft fit of 6 grade spherical roller bearing(except tapered roller bearing)
Bore
d(mm)
Shaft tolerance scale
k5
k6
m5
k6
n6
p6
r6
r7
Interference
Over
Incl.
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
3
6
1
13
1
16
4
16
4
19
8
23
12
27
-
-
-
-
6
10
1
14
1
17
6
19
6
22
10
26
15
31
-
-
-
-
10
18
1
16
1
19
7
22
7
25
12
30
18
39
-
-
-
-
18
30
2
19
2
23
8
25
8
29
15
36
22
43
-
-
-
-
30
50
2
23
2
28
9
30
9
35
17
43
26
52
-
-
-
-
50
80
2
27
2
33
11
36
11
42
20
51
32
63
-
-
-
-
80
120
3
33
3
40
13
43
13
50
23
60
37
64
-
-
-
-
120
140
160
140
160
180
3
39
3
46
15
51
15
58
27
70
43
86
63
65
68
106
108
111
-
-
180
200
225
200
225
250
4
46
4
55
17
59
17
68
31
82
50
101
77
80
84
128
131
135
77
80
84
145
148
152
250
280
280
315
4
52
4
61
20
68
20
77
34
91
58
113
94
98
151
155
94
98
171
175
315
355
355
400
4
59
4
70
21
76
21
87
37
103
62
128
108
114
174
180
108
114
195
201
400
450
450
500
5
67
5
80
23
85
23
98
40
115
68
143
126
132
201
207
126
132
224
230

Table 4, Bearing and housing fit of 6 grade spherical roller bearing(except tapered roller bearing)
Bore
d(mm)
Bore tolerance scale
G7
H8
H7
H6
J7
J6
JS7
Clearance
Clearance or interference
Over
Incl.
Max
Min
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
10
18
31
6
34
0
25
0
18
0
17
8
13
5
16
9
18
30
36
7
41
0
29
0
21
0
20
9
16
5
18
10
30
50
43
9
48
0
34
0
25
0
23
11
19
6
21
12
50
80
51
10
57
0
41
0
30
0
29
12
24
6
26
15
80
120
60
12
67
0
48
0
35
0
35
13
29
6
30
17
120
150
69
14
78
0
55
0
40
0
41
14
33
7
35
20
150
180
72
14
81
0
58
0
43
0
44
14
36
7
38
20
180
250
81
15
92
0
66
0
49
0
50
16
42
7
43
23
250
315
94
17
106
0
77
0
57
0
61
16
50
7
51
26
315
400
103
18
117
0
85
0
64
0
67
18
57
7
56
28
400
500
116
20
130
0
96
0
73
0
76
20
66
7
64
31

Bore
d(mm)
Bore tolerance scale
JS6
K6
K7
M6
M7
N6
N7
P6
P7
Clearance or interference
Interference
Over
Incl.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Min
Max
Min
Max
10
18
12.5
5.5
9
9
13
12
3
15
7
18
-2
20
2
23
8
26
4
29
18
30
14.5
6.5
10
11
14
15
4
17
8
21
-3
24
1
28
10
31
6
35
30
50
17
8
12
13
16
18
5
20
9
25
-3
28
1
33
12
37
8
42
50
80
20.5
9.5
15
15
20
21
6
24
11
30
-3
33
2
39
15
45
10
51
80
120
24
11
17
18
23
25
7
28
13
35
-3
38
3
45
17
52
11
59
120
150
27.5
12.5
19
21
27
28
7
33
15
40
-5
45
3
52
21
61
13
68
150
180
30.5
12.5
22
21
30
28
10
33
18
40
-2
45
6
52
18
61
10
68
180
250
34.5
14.5
25
24
33
33
12
37
20
46
-2
51
6
60
21
70
13
79
250
315
41
16
30
27
41
36
16
41
25
52
0
57
11
66
22
79
11
88
315
400
46
18
35
29
45
40
18
46
28
57
2
62
12
73
23
87
13
98
400
500
53
20
41
32
51
45
23
50
33
63
6
67
16
80
22
95
12
108

Table 5. Tapered Roller Bearings P0、P6 Bearing and Shaft fits
Bearing Bore D(mm)
Shaft
f6
g6
g5
h6
h5
j5
j6
Clearance or Interference
Over
Incl
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
10
18
27
4
17
6
14
6
11
12
8
12
3
18
3
20
18
30
33
8
20
5
16
5
13
12
9
12
4
18
4
21
30
50
41
13
25
3
20
3
16
12
11
12
5
18
5
23
50
80
49
15
29
5
23
5
19
15
13
15
7
21
7
27
80
120
58
16
34
8
27
8
22
20
15
20
9
26
9
33
120
140
160
140
160
180
68
18
39
11
32
11
25
25
18
25
11
32
11
39
180
200
225
200
225
250
79
20
44
15
35
15
29
30
20
30
13
37
13
46
250
280
280
315
88
21
49
18
40
18
32
35
23
35
16
42
-
-
315
355
355
400
98
22
54
22
43
22
36
40
25
40
18
47
-
-
400
450
450
500
108
23
60
25
47
25
40
45
27
45
20
52
-
-


Bearing Bore
D(mm)
shaft
js5
k5
k5
m5
m6
n6
p6
r6
Clearance or Interference
Interference
Over
Incl
Max cln.
Max cln.
Max cln.
Max cln.
min
max
min
max
min
max
min
max
min
max
min
max
10
18
5.5
17.5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
18
30
6.5
18.5
2
23
2
27
-
-
-
-
-
-
-
-
-
-
30
50
8
20
2
25
2
30
9
32
9
37
-
-
-
-
-
-
50
80
9.5
24.5
2
30
2
36
11
39
11
45
20
54
-
-
-
-
80
120
11
31
3
38
3
45
13
48
13
55
23
65
37
79
-
-
120
140
160
140
160
180
12.5
37.5
3
46
3
53
15
58
15
65
27
77
43
93
63
113
115
118
180
200
225
200
225
250
14.5
44.5
4
54
4
63
17
67
17
67
31
90
50
109
77
80
84
136
139
143
250
280
280
315
16
51
4
62
4
71
20
78
20
87
34
101
56
123
94
98
161
165
315
355
355
400
18
58
4
69
4
80
21
86
21
97
37
113
62
138
108
114
184
190
400
450
450
500
20
65
5
77
5
90
23
95
23
108
40
125
68
153
126
132
211
217

Table 6. Tapered Roller Bearings P0、P6 Bearing and housing fits
Bearing
O.D.(mm)
Housing Bore
G7
H8
H7
H6
J7
J6
JS7
Clearance
Clearance or Interference
Over
Incl
max
min
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
30
50
48
9
50
0
39
0
30
0
28
11
24
6
26
12
50
80
56
10
59
0
46
0
35
0
34
12
29
6
31
15
80
120
65
12
69
0
53
0
40
0
40
13
34
6
35
17
120
150
74
14
81
0
60
0
45
0
46
14
38
7
40
20
150
180
79
14
88
0
65
0
50
0
51
14
43
7
45
20
180
250
91
15
102
0
76
0
59
0
60
16
52
7
53
23
250
315
104
1 7
116
0
87
0
67
0
71
16
60
7
61
26
315
400
115
18
129
0
97
0
76
0
79
18
69
7
68
28
400
500
128
20
142
0
108
0
85
0
88
20
78
7
76
31

Bearing
O.D.(mm)
Housing Bore
JS6
K6
K7
M6
M7
N6
N7
P6
P7
Clearance or Interference
Interference
Over
Incl
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
Max cln.
Max int.
min
max
min
max
30
50
22
8
1 7
13
21
18
10
20
14
25
2
28
6
33
7
37
3
42
50
80
25.5
95
20
15
25
21
11
24
16
30
2
33
7
39
10
45
5
51
80
120
29
11
22
18
28
25
12
28
18
35
2
38
8
45
12
52
6
59
120
150
32.5
12.5
24
21
32
28
12
33
20
40
0
45
8
52
16
61
8
68
150
180
37.5
12.5
29
21
37
28
17
33
25
40
5
45
13
52
11
61
3
68
180
250
44.5
14.5
35
24
43
33
22
37
30
46
8
51
16
60
11
70
3
79
250
315
51
16
40
27
51
36
26
41
35
52
10
57
21
66
12
79
1
88
315
400
58
18
47
29
57
40
30
46
40
57
14
62
24
73
11
87
1
98
400
500
65
20
53
32
63
45
35
50
45
63
18
67
28
80
10
95
0
108


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