Needle roller bearings, with machined rings, with an inner ring

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    (all)
    Bore diameter:
    Exact :
     ≤ d ≤ 
    d =
    Outside diameter:
    Exact :
     ≤ D ≤ 
    D =
    Width:
    Exact :
     ≤ B ≤ 
    B =
    Width outer ring:
    Exact :
     ≤ C ≤ 
    C =
Principal dimensionsBasic load ratingsFatigue load limitSpeed ratingsDesignation
    dynamicstatic Reference speedLimiting speed 
dDBCCC0Pu   
mmkNkNr/min 
          
42
57
20
 
29.2
61
7.6
8500
10000
NKI 42/20
12
24
16
 
11.7
15.3
1.8
22000
26000
NKI 12/16
12
24
14
13
8
9.6
1.1
 
11000
NA 4901.2RS
10
22
14
13
7.3
8.1
0.965
 
12000
NA 4900.2RS
70
95
35
 
76.5
190
24
5000
5600
NKI 70/35
17
29
20
 
17.2
27
3.3
19000
22000
NKI 17/20
40
62
23
22
36.9
58.5
7.1
 
4000
NA 4908.2RS
40
62
23
22
36.9
58.5
7.1
 
4000
NA 4908 RS
17
30
14
13
9.5
12.9
1.5
 
9000
NA 4903.2RS
35
50
20
 
29.7
60
7.5
10000
11000
NKI 35/20 TN
80
110
30
 
88
183
23.2
4500
5000
NA 4916
55
85
28
 
66
114
14.6
6000
6700
NKIS 55
75
105
30
 
84.2
170
21.6
4800
5300
NA 4915
70
100
30
 
84.2
163
20.8
5000
5600
NA 4914
65
90
25
 
61.6
120
14.6
5600
6300
NA 4913
60
85
25
 
60.5
114
14.3
6000
6700
NA 4912
55
80
25
 
57.2
106
13.2
6300
7000
NA 4911
17
35
16
 
19.4
25.5
3
17000
19000
NAO 17x35x16
50
72
22
 
47.3
85
10.6
7000
8000
NA 4910
25
42
32
 
38
67
8
13000
15000
NAO 25x42x32
50
80
28
 
62.7
104
13.2
6300
7500
NKIS 50
100
130
40
 
123
305
37.5
3600
4000
NKI 100/40
12
24
13
 
8.5
12
1.3
24000
26000
NAO 12x24x13
25
38
20
 
24.6
42.5
5.2
14000
15000
NKI 25/20 TN
95
130
35
 
114
270
33.5
3600
4000
NA 4919
9
22
12
 
9.5
10
1.1
26000
30000
NAO 9x22x12 TN
90
125
35
 
112
265
32.5
3800
4300
NA 4918
85
120
35
 
108
250
31
4000
4500
NA 4917
20
37
18
17
19.4
22.4
2.6
 
7500
NA 4904 RS
38
53
20
 
27.5
55
6.8
9500
11000
NKI 38/20
12
24
20
 
14.5
20
2.4
22000
26000
NKI 12/20
70
95
25
 
56.1
127
15.6
5000
5600
NKI 70/25
35
55
21
20
27
43
5.3
 
4800
NA 4907.2RS
85
115
26
 
73.7
146
18.6
4300
4800
NKI 85/26
45
72
22
 
44.6
78
9.8
7000
8000
NKIS 45
17
30
13
 
11.4
16.3
1.9
18000
20000
NA 4903
15
28
13
 
11.2
15.3
1.8
19000
22000
NA 4902
25
42
17
 
24.2
34.5
4.1
13000
15000
NA 4905
20
37
17
 
21.6
28
3.3
15000
17000
NA 4904
12
24
13
 
9.9
12.2
1.4
22000
26000
NA 4901
10
22
13
 
8.8
10.4
1.2
24000
28000
NA 4900
35
55
20
 
31.9
54
6.7
9500
11000
NA 4907
30
47
17
 
25.5
39
4.6
11000
13000
NA 4906
45
68
22
 
45.7
78
9.6
7500
8500
NA 4909
40
65
22
 
42.9
72
8.8
8000
9000
NKIS 40
40
62
22
 
42.9
71
8.8
8000
9500
NA 4908
35
50
30
 
38
83
10.4
10000
11000
NKI 35/30
15
27
16
 
13.4
19
2.2
20000
24000
NKI 15/16
95
130
63
 
172
465
56
3600
4000
NA 6919
10
22
14
13
7.3
8.1
0.965
 
12000
NA 4900 RS
38
53
30
 
40.2
90
11.2
9500
11000
NKI 38/30
75
105
35
 
96.8
200
26
4800
5300
NKI 75/35
340
420
80
 
616
1959
183
1000
1200
NA 4868
75
105
54
 
130
290
37.5
4800
5300
NA 6915
10
22
20
 
12.8
16.6
2
24000
28000
NKI 10/20
80
110
54
 
134
315
40
4500
5000
NA 6916
85
120
63
 
165
425
53
4000
4500
NA 6917
90
125
63
 
172
450
55
3800
4300
NA 6918
22
34
20
 
19.4
34.5
4.2
15000
17000
NKI 22/20
90
120
30
 
67.1
190
23.6
4000
4800
NAO 90x120x30
55
80
45
 
89.7
190
23.2
6300
7000
NA 6911
60
85
45
 
93.5
204
25
6000
6700
NA 6912
65
90
45
 
95.2
212
26
5600
6300
NA 6913
85
115
36
 
105
232
30
4300
4800
NKI 85/36
25
38
30
 
31.9
60
7.5
14000
15000
NKI 25/30
70
100
54
 
128
285
36
5000
5600
NA 6914
20
37
18
17
19.4
22.4
2.6
 
7500
NA 4904.2RS
300
380
80
 
594
1799
173
1100
1300
NA 4860
50
72
40
 
73.7
150
18.6
7000
8000
NA 6910
10
22
16
 
10.2
12.5
1.5
24000
28000
NKI 10/16
22
34
16
 
15.7
26
3.1
15000
17000
NKI 22/16
320
400
80
 
605
1899
176
1100
1200
NA 4864
75
105
25
 
69.3
132
16.6
4800
5300
NKI 75/25
25
42
16
 
22
33.5
4
13000
15000
NAO 25x42x16
17
30
13
 
10.1
16.3
1.8
18000
20000
NAO 17x30x13
35
50
17
 
20.5
41.5
5
10000
12000
NAO 35x50x17
20
37
16
 
20.1
28
3.3
15000
17000
NAO 20x37x16
40
62
40
 
67.1
125
15.3
8000
9500
NA 6908
45
68
40
 
70.4
137
17
7500
8500
NA 6909
70
100
30
 
68.2
176
22
5000
6000
NAO 70x100x30
30
47
30
 
42.9
75
9.3
11000
13000
NA 6906
30
45
30
 
40.2
85
10.6
11000
13000
NKI 30/30 TN
17
29
16
 
13.8
20.4
2.4
19000
22000
NKI 17/16
380
480
100
 
968
3000
270
900
1000
NA 4876
35
55
36
 
48.4
93
11.4
9500
11000
NA 6907
20
37
30
 
35.2
53
6.5
15000
17000
NA 6904
45
62
25
 
42.9
91.5
11.2
8000
9000
NKI 45/25 TN
25
42
30
 
38
62
7.6
13000
15000
NA 6905
15
28
23
 
17.2
27
3.3
19000
22000
NA 6902
17
30
23
 
18.7
30.5
3.7
18000
20000
NA 6903
50
72
23
22
40.2
69.5
8.5
 
3400
NA 4910.2RS
12
24
22
 
16.1
23.2
2.7
22000
26000
NA 6901
100
140
40
 
125
280
34
3400
4000
NA 4920
80
110
30
 
64.4
173
21.6
4500
5300
NAO 80x110x30
110
150
40
 
130
300
35.5
3200
3600
NA 4922
360
440
80
 
627
2039
186
950
1100
NA 4872
120
165
45
 
176
405
49
3000
3400
NA 4924
65
95
28
 
70.4
132
16.6
5300
6000
NKIS 65
32
47
30
 
36.9
76.5
9.5
11000
12000
NKI 32/30
7
17
16
 
5.9
8
0.9
28000
32000
NKI 7/16 TN
130
180
50
 
198
480
57
2600
3000
NA 4926
140
190
50
 
205
510
60
2400
2800
NA 4928
7
17
12
 
4.5
5.7
0.63
28000
32000
NKI 7/12 TN
100
130
30
 
96.8
220
27
3600
4000
NKI 100/30
60
90
28
 
68.2
120
15.3
5600
6300
NKIS 60
6
16
16
 
5.7
7.2
0.815
30000
34000
NKI 6/16 TN
30
45
17
 
19.8
39
4.6
12000
13000
NAO 30x45x17
240
300
60
 
347
1119
112
1500
1700
NA 4848
12
24
14
13
8
9.6
1.1
 
11000
NA 4901 RS
5
15
16
 
5
5.8
0.67
32000
36000
NKI 5/16 TN
40
55
30
 
45.7
108
13.7
9000
10000
NKI 40/30 TN
220
270
50
 
238
815
81.5
1700
1900
NA 4844
32
47
20
 
25.1
46.5
5.8
11000
12000
NKI 32/20
35
55
20
 
31.4
57
6.9
10000
11000
NAO 35x55x20
28
42
30
 
34.1
65.5
8.3
12000
14000
NKI 28/30
32
52
36
 
47.3
90
10.8
10000
11000
NA 69/32
28
42
20
 
26.4
48
6
12000
14000
NKI 28/20 TN
28
45
30
 
39.6
65.5
8.3
12000
14000
NA 69/28
6
17
10
 
4.5
5.7
0.63
28000
32000
NAO 6x17x10 TN
15
28
14
13
9.1
12
1.4
 
9500
NA 4902 RS
200
250
50
 
224
735
75
1800
2000
NA 4840
95
125
36
 
112
265
32.5
3800
4300
NKI 95/36
15
35
20
 
24.6
30
3.6
16000
19000
NKIS 15
50
72
23
22
40.2
69.5
8.5
 
3400
NA 4910 RS
17
37
20
 
26
33.5
4
15000
17000
NKIS 17
55
72
35
 
55
134
17
6700
7500
NKI 55/35
9
19
12
 
6.7
8.1
0.965
26000
30000
NKI 9/12
30
45
26
 
26.4
56
6.5
12000
13000
NAO 30x45x26
9
19
16
 
9.1
12
1.4
26000
30000
NKI 9/16
280
350
69
 
429
1319
129
1300
1400
NA 4856
22
39
30
 
36.9
57
7.2
14000
15000
NA 69/22
17
30
14
13
9.5
12.9
1.5
 
9000
NA 4903 RS
30
47
18
17
23.3
32
3.8
 
5600
NA 4906 RS
30
47
18
 
26.4
44
5.3
11000
13000
NAO 30x47x18
30
47
16
 
23.3
37.5
4.5
11000
13000
NAO 30x47x16
25
42
18
17
21.6
27.5
3.2
 
6300
NA 4905 RS
15
27
20
 
16.5
25.5
3
20000
24000
NKI 15/20
55
72
25
 
46.8
110
13.4
6700
7500
NKI 55/25 TN
260
320
60
 
358
1199
118
1400
1500
NA 4852
30
45
20
 
27.5
52
6.5
11000
13000
NKI 30/20 TN
25
42
18
17
21.6
27.5
3.2
 
6300
NA 4905.2RS
60
82
25
 
44
95
11.8
6000
6700
NKI 60/25
120
150
30
 
99
255
29
3200
3600
NA 4824
65
90
35
 
73.7
163
20.4
5600
6300
NKI 65/35
110
140
30
 
93.5
232
27
3400
3800
NA 4822
22
39
17
 
23.3
32
3.9
14000
15000
NA 49/22
80
110
25
 
72.1
140
18
4500
5000
NKI 80/25
140
175
35
 
121
345
37.5
2600
3000
NA 4828
30
47
18
17
23.3
32
3.8
 
5600
NA 4906.2RS
15
28
13
 
9.5
14.6
1.6
20000
22000
NAO 15x28x13
130
165
35
 
119
325
36.5
2800
3200
NA 4826
40
55
20
 
31.4
65.5
8.3
9000
10000
NKI 40/20 TN
90
120
26
 
76.5
156
19.6
4000
4500
NKI 90/26
35
55
21
20
27
43
5.3
 
4800
NA 4907 RS
45
68
22
22
39.1
64
7.8
 
3800
NA 4909 RS
20
32
20
 
19
32.5
4
16000
19000
NKI 20/20
30
52
22
 
36.9
54
6.5
10000
12000
NKIS 30
45
68
23
22
39.1
64
7.8
 
3800
NA 4909.2RS
20
32
16
 
15.4
24.5
2.9
16000
19000
NKI 20/16
15
28
14
13
9.1
12
1.4
 
9500
NA 4902.2RS
12
28
12
 
11
12.5
1.5
22000
26000
NAO 12x28x12
20
35
17
 
14.2
26.5
3.1
16000
18000
NAO 20x35x17
35
58
22
 
39.1
61
7.5
9000
10000
NKIS 35
50
68
35
 
52.3
122
15.3
7500
8500
NKI 50/35
40
55
17
 
21.6
46.5
5.6
9000
10000
NAO 40x55x17
160
200
40
 
157
450
49
2200
2600
NA 4832
32
52
20
 
30.8
51
6.3
10000
11000
NA 49/32
65
90
25
 
52.8
106
13.2
5600
6300
NKI 65/25
170
215
45
 
179
520
56
2200
2400
NA 4834
80
110
35
 
101
216
28
4500
5000
NKI 80/35
45
62
35
 
58.3
137
17
8000
9000
NKI 45/35 TN
180
225
45
 
190
570
60
2000
2400
NA 4836
60
82
35
 
60.5
146
18.3
6000
6700
NKI 60/35
90
120
36
 
108
250
31
4000
4500
NKI 90/36
190
240
50
 
220
710
73.5
1900
2200
NA 4838
6
16
12
 
4.4
5.2
0.57
30000
34000
NKI 6/12 TN
5
15
12
 
3.8
4.2
0.465
32000
36000
NKI 5/12 TN
42
57
30
 
41.8
98
12.5
8500
10000
NKI 42/30
20
42
20
 
28.6
39
4.7
13000
15000
NKIS 20
25
40
17
 
18.7
34
4
13000
15000
NAO 25x40x17
25
47
22
 
34.1
46.5
5.7
12000
13000
NKIS 25
50
68
20
 
27
67
8.1
7500
8500
NAO 50x68x20
95
125
26
 
78.1
166
20.4
3800
4300
NKI 95/26
50
68
25
 
40.2
88
10.8
7500
8500
NKI 50/25
28
45
17
 
25.1
36.5
4.4
12000
14000
NA 49/28
150
190
40
 
147
415
46.5
2400
2800
NA 4830
15
32
12
 
12.8
16.3
1.9
19000
22000
NAO 15x32x12

For additional information about the meaning and limitations of the product data, refer to Needle roller bearings with machined rings and Principles of bearing selection and application.

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