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Precise Double-row Cylindrical Roller Bearing
Since the rolling elements in cylindrical roller bearings make line contact with raceways,these bearings can accommodate heavy
radial loads . The rollers are guided by ribs on either the inner or outer ring ,therefore these bearings aer also suitablefor high
speed applications.Furthermore, cylindrical roller bearings are separable ,and relatively easy to install and disassemble even when
interference fits are required.
NN type and NNu type available.Widely used for applications requiring thin-walled bearings,such the main shafts of machine
tools,rolling machine rollers,and in printing equipment.Internal radial clearance is adjusted for the spindle of machine tools by
pressing the tapered bore of the inner ring on a tapered shaft.
Number
Basic Dimensions(mm)
Basic Load Rating(KN)
Speed Ratings(rpm)
Weight(kg)
d
D
B
Dynamic
Static
Oil
Grease
NN3015
75
115
30
96
165
8000
6700
1.12
NN3015
75
115
30
96
165
8000
6700
1.12
NN3016
80
125
34
118
207
5600
4500
1.5
NN3017
85
130
34
123
224
5300
4300
1.63
NN3018K
90
140
37
134
260
5000
4000
1.98
NN3018
90
140
37
134
260
5000
4000
2.62
NN3019K
95
145
37
146
270
4300
3800
2.26
NN3019
95
145
37
146
270
4300
3800
2.93
NN3020K
100
150
37
153
292
6300
5300
2.2
NN3020
100
150
37
153
292
6300
5300
2.25
NN3021K
105
160
41
192
350
4800
4000
2.93
NN3021
105
160
41
192
350
4800
4000
3.02
NN3022K
110
170
45
220
405
6000
5000
3.75
NN3022
110
170
45
220
405
6000
5000
3.87
NN3024K
120
180
46
243
445
5000
4300
3.65
NN3024
120
180
46
243
445
5000
4300
3.78
NN3026K
130
200
52
280
530
4500
3800
5.34
NN2036
130
200
52
280
530
4500
3800
5.52
NN3028K
140
210
53
293
575
4500
3800
6.05
NN3028
140
210
53
293
575
4500
3800
6.25
NN3030K
150
225
56
330
650
4000
3400
7.7
NN3030
150
225
56
330
650
4000
3400
7.94
NN3032K
160
240
60
345
675
3800
3200
8.38
NN3032
160
240
60
345
675
3800
3200
8.68
NN3034K
170
260
67
435
860
3600
3000
12.9
NN3034
170
260
67
435
860
3600
3000
13.3
NN3036K
180
280
74
555
1090
3400
2800
17.9
NN3036
180
280
74
555
1090
3400
2800
18.4
NN3038K
190
290
75
565
1140
3200
2600
17.9
NN3038
190
290
75
565
1140
3200
2600
18.5
NNU4938
190
260
69
295
600
2600
1900
10.7
NN3040K
200
310
82
675
1340
3000
2400
22
NN3040
200
310
82
675
1340
3000
2400
22.7
NN3044K
220
340
90
795
1610
2800
2200
30.1
NN3034
220
340
90
795
1610
2800
2200
31
NN3048K
240
360
92
810
1690
2600
2000
32.7
NN3048
240
360
92
810
1690
2600
2000
33.8
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