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NK Series  
Bearing No.
Boundary dimensions(mm)
Basic load ratings(N)
Limiting speeds(rpm)
Mass(g)
Fw
D
C
Cr
Cor
Oil
≈
NK5/10TN
5
10
10
2100
1400
36780
2.9
NK8/12TN
8
15
12
3050
3650
29112
8.3
NK10/12TN
10
17
12
4750
5350
23500
10
NK12/12
12
19
12
6050
6400
21640
11.8
NK12/16
12
19
16
8200
9800
21640
16.8
NK14/16
14
22
16
8260
9600
18322
20.8
NK15/12
15
23
12
8600
10070
21004
18.5
NK16/16
16
24
16
9030
11900
15522
20.8
NK16/20
16
24
20
10400
16800
15522
23.9
NK17/16
17
25
16
9000
13500
14163
21.5
NK18/20
18
26
20
10500
13800
13628
30.5
NK20/16
20
28
16
11500
13400
12716
25.7
NK20/20
20
28
20
12400
21800
12716
29.3
NK202616
20
26
16
9600
10800
9125
20.8
NK202620
20
26
20
10500
11900
9125
17.2
NK203312SX
20
33
12
13000
17500
11124
29.1
NK22/16
22
30
16
13500
18000
11527
29.2
NK25/16
25
33
16
12900
20400
15000
30
NK25/20
26
34
20
17000
30000
16300
40
NK26/16
26
34
16
15000
23000
16300
30
NK30/20
30
40
20
20600
32000
12066
57.9
NK30/30
30
40
30
31500
50000
14500
95
NK32/20
32
42
20
17500
33500
12066
75.4
NK35/20
35
45
20
13851
26900
12000
70
NK40/20
40
50
20
19600
43000
8881
78.9
NK40/30
40
50
30
22200
513500
8881
120
NK42/20
42
52
20
23900
45000
10000
83
NK42/30
42
52
30
27000
49000
10000
125
NK43/20
43
63
20
25700
75000
10000
84
NK43/30
43
53
30
39000
75000
10000
126
NK45/20
45
55
20
19800
46500
7650
81.5
NK50/25
50
62
25
28000
67000
8140
167
NK50/35
50
62
35
32000
70100
8140
236
NK55/25
55
68
25
30600
60800
7625
167
NK60/25
60
72
25
39000
86000
7000
154
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