Needle Roller Bearings
Features
Needle roller bearing is detachable radial bearing. The end of the roller contract slightly to improve the lineal contact between roller and rollaway nest, prevent the end of the roller to generate peak stress, consequently extend the service life of the bearing. Although the cross section of the needle bearing is small, but they possess high bearing capacity. Thus, they are very suitable for the bearing allocation with restricted radial space. Gainhui Bearing provides needle bearings with different design, various series and multiple dimensions, to meet various kinds of working conditions and applications.
Applications
Gainhui bearing can provide needle roller bearings as follows.
1.NK.NKIS.NA.NKS.RNA.NKI.NKIS,
etc.
2.NKIA.NKIB.NKX.ZARN.NX.NKXR.ZARF,
etc.
3.HK.BK.HN,
etc.
Dimension and Parameters
Bearing
designation
Dimensions
Basic load
Fatigue load
limit
Limiting speed for
lubrication
Mass
dynamic
static
d
D
B
rs
F
Cr
Cor
Cu
grease
oil
mm
kN
min-1
kg
NK5/10TN
5
10
10
0.15
5
2650
1920
295
39,000
55,000
0.003
NK5/12TN
10
12
0.15
5
3400
2650
435
39,000
54,000
0.004
NK6/10
6
12
10
0.15
6
2950
2280
355
36,500
48,500
0.005
NK6/12TN
12
12
0.15
6
3800
3150
520
36,500
47,500
0.006
NK7/10TN
7
14
10
0.3
7
3250
2650
410
34,500
43,000
0.007
NK7/12TN
14
12
0.3
7
4150
3600
600
34,500
42,000
0.008
NK8/12
8
15
12
0.3
8
4450
4100
690
32,500
37,000
0.009
NK8/16
15
16
0.3
8
5800
5800
970
32,500
36,500
0.012
NK9/12
9
16
12
0.3
9
5100
5000
840
31,000
32,000
0.01
NK9/16
16
16
0.3
9
6600
7100
1190
31,000
32,000
0.013
NK10/12
10
17
12
0.3
10
5300
5500
930
29,500
29,000
0.01
NK10/16
17
16
0.3
10
7000
7800
1310
29,500
28,500
0.013
NK12/12
12
19
12
0.3
12
7200
7100
1280
26,500
22,400
0.012
NK12/16
19
16
0.3
12
10100
11000
1920
26,500
21,600
0.016
RNA4900
14
22
13
0.3
14
9600
9200
1630
23,600
15,400
0.017
NK14/16
22
16
0.3
14
11400
11500
2100
24,600
18,600
0.021
NK14/20
22
20
0.3
14
14500
15600
2700
24,600
18,300
0.026
