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NU2300 Series


Cylindrical roller bearings provide the highest possible radial load capacity compared to other roller bearing types. Four primary styles are available to meet a variety of application requirements.
The rollers of Cylindrical roller bearings are a key component. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimizes rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.
One-row, or single-row, caged Cylindrical roller bearings are available in six primary designs. Inside and outside ring configurations vary to accommodate different application designs.
Two-row, or double-row, Cylindrical roller bearings offer added radial capacity over traditional one-row types.
Four-row Cylindrical roller bearings have an extremely high radial load capacity, but no thrust capacity. This bearing type is mostly used in roll neck and work roll applications in the metal rolling industry.

Full complement Cylindrical roller bearings meet the need for increased radial load carrying capacity by maximizing the number of rollers in a given envelope.

WGD Bearing No.
Boundary dimensions
Basic load rating(kN)
Limiting speeds
Mass
mm
Dynamic
Static
rpm
Kg
d
D
B
rs min
rs1 min
Cr
Cor
Grease
Oil
≈
NU2304E
20
52
21
1.1
0.6
42
39
12,000
14,000
0.242
NU2305E
25
62
24
1.1
1.1
57
56
9,700
11,000
0.386
NU2306E
30
72
27
1.1
1.1
74.5
77.5
8,300
9,700
0.58
NU2307E
35
80
31
1.5
1.1
99
109
7,200
8,500
0.78
NU2308
40
90
33
1.5
1.5
82.5
88
7,000
8,200
0.951
NU2308E
40
90
33
1.5
1.5
114
122
6,400
7,500
1.06
NU2309
45
100
36
1.5
1.5
99
104
6,300
7,400
1.27
NU2309E
45
100
36
1.5
1.5
137
153
5,700
6,800
1.41
NU2310
50
110
40
2
2
121
131
5,700
6,700
1.7
NU2310E
50
110
40
2
2
163
187
5,200
6,100
1.9
NU2311
55
120
43
2
2
148
162
5,200
6,100
2.17
NU2311E
55
120
43
2
2
201
233
4,700
5,600
2.37
NU2312
60
130
46
2.1
2.1
169
188
4,800
5,700
2.71
NU2312E
60
130
46
2.1
2.1
222
262
4,400
5,200
2.96
NU2313
65
140
48
2.1
2.1
188
212
4,400
5,200
3.27
NU2313E
65
140
48
2.1
2.1
248
287
4,100
4,800
3.48
NU2314
70
150
51
2.1
2.1
223
262
4,100
4,800
3.98
NU2314E
70
150
51
2.1
2.1
274
325
3,800
4,400
4.25
NU2315
75
160
55
2.1
2.1
258
300
3,800
4,500
4.87
NU2315E
75
160
55
2.1
2.1
330
395
3,500
4,100
5.25
NU2316
80
170
58
2.1
2.1
274
330
3,600
4,200
5.79
NU2316E
80
170
58
2.1
2.1
355
430
3,300
3,900
6.25
NU2317
85
180
60
3
3
315
380
3,400
4,000
6.7
NU2317E
85
180
60
3
3
395
485
3,100
3,700
7.16
NU2318
90
190
64
3
3
325
395
3,200
3,800
7.95
NU2318E
90
190
64
3
3
435
535
2,900
3,400
8.56
NU2319
95
200
67
3
3
370
460
3,000
3,500
9.2
NU2319E
95
200
67
3
3
460
585
2,700
3,200
9.8
NU2320
100
215
73
3
3
410
505
2,900
3,400
11.7
NU2320E
100
215
73
3
3
570
715
2,600
3,100
12.8
NU2322
110
240
80
3
3
605
790
2,600
3,100
17.1
NU2322E
110
240
80
3
3
675
880
2,400
2,800
19.4
NU2324
120
260
86
3
3
710
920
2,400
2,800
21.5
NU2324E
120
260
86
3
3
795
1,030
2,200
2,500
26.1
NU2326
130
280
93
4
4
840
1,130
2,200
2,600
26.9
NU2326E
130
280
93
4
4
920
1,230
2,000
2,300
30.9
NU2328
140
300
102
4
4
920
1,250
2,000
2,300
33.8
NU2328E
140
300
102
4
4
1,020
1,380
1,800
2,100
38.7
NU2330
150
320
108
4
4
1,020
1,400
1,900
2,200
40.6
NU2330E
150
320
108
4
4
1,160
1,600
1,700
2,000
47.2

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