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NJ200 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
≈
20
47
14
1
0.6
25.7
22.6
15,000
18,000
0.122
NJ205E
25
52
15
1
0.6
29.3
27.7
13,000
15,000
0.151
NJ206E
30
62
16
1
0.6
39
37.5
11,000
13,000
0.226
NJ207E
35
72
17
1.1
0.6
50.5
50
9,500
11,000
0.327
NJ208
40
80
18
1.1
1.1
43.5
43
9,400
11,000
0.378
NJ208E
40
80
18
1.1
1.1
55.5
55.5
8,500
10,000
0.426
NJ209
45
85
19
1.1
1.1
46
47
8,400
9,900
0.432
NJ209E
45
85
19
1.1
1.1
63
66.5
7,600
9,000
0.495
NJ210
50
90
20
1.1
1.1
48
51
7,600
9,000
0.47
NJ210E
50
90
20
1.1
1.1
66
72
6,900
8,100
0.54
NJ211
55
100
21
1.5
1.1
58
62.5
6,900
8,200
0.638
NJ211E
55
100
21
1.5
1.1
82.5
93
6,300
7,400
0.718
NJ212
60
110
22
1.5
1.5
68.5
75
6,400
7,600
0.818
NJ212E
60
110
22
1.5
1.5
97.5
107
5,800
6,800
0.923
NJ213
65
120
23
1.5
1.5
84
94.5
5,900
7,000
1.02
NJ213E
65
120
23
1.5
1.5
108
119
5,400
6,300
1.21
NJ214
70
125
24
1.5
1.5
83.5
95
5,500
6,500
1.12
NJ214E
70
125
24
1.5
1.5
119
137
5,000
5,900
1.3
NJ215
75
130
25
1.5
1.5
96.5
111
5,100
6,000
1.23
NJ215E
75
130
25
1.5
1.5
130
156
4,700
5,500
1.41
NJ216
80
140
26
2
2
106
122
4,800
5,700
1.5
NJ216E
80
140
26
2
2
139
167
4,400
5,100
1.67
NJ217
85
150
28
2
2
120
140
4,500
5,300
1.87
NJ217E
85
150
28
2
2
167
199
4,100
4,800
2.11
NJ218
90
160
30
2
2
152
178
4,300
5,000
2.3
NJ218E
90
160
30
2
2
182
217
3,900
4,600
2.44
NJ219
95
170
32
2.1
2.1
166
195
4,000
4,700
2.78
NJ219E
95
170
32
2.1
2.1
220
265
3,600
4,300
3.02
NJ220
100
180
34
2.1
2.1
183
217
3,800
4,500
3.33
NJ221
105
190
36
2.1
2.1
201
241
3,600
4,300
3.95
NJ222
110
200
38
2.1
2.1
240
290
3,400
4,000
4.63
NJ224
120
215
40
2.1
2.1
260
320
3,200
3,700
5.57
NJ226
130
230
40
3
3
270
340
2,900
3,400
6.3
NJ226E
130
230
40
3
3
365
455
2,600
3,100
6.9
NJ228,
140
250
42
3
3
310
400
2,700
3,100
7.88
NJ228E
140
250
42
3
3
395
515
2,400
2,800
8.73
NJ230
150
270
45
3
3
345
435
2,500
2,900
9.92
NJ230E
150
270
45
3
3
450
595
2,200
2,600
11

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