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NJ 300 Series
    Publish time 2018-09-29 10:20    

Cylindrical roller bearings are commonly separable and easy to mount and dismount. They can be divided into single row, double row and multi-row cylindrical roller bearings. The widely used bearings are cylindrical roller bearings with cage. There are single or double row bearings with a full complement of rollers and other bearing arrangements. Cylindrical roller bearings have high radial load carrying capacity and are also suitable for high speeds.


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
≈
NJ304E
20
52
15
1.1
0.6
31.5
26.9
13,000
15,000
0.176
NJ305E
25
62
17
1.1
1.1
41.5
37.5
11,000
13,000
0.275
NJ306E
30
72
19
1.1
1.1
53
50
9,300
11,000
0.398
NJ307E
35
80
21
1.5
1.1
71
71
8,100
9,600
0.545
NJ308
40
90
23
1.5
1.5
58.5
57
8,000
9,400
0.658
NJ308E
40
90
23
1.5
1.5
83
81.5
7,200
8,500
0.754
NJ309
45
100
25
1.5
1.5
74
71
7,200
8,400
0.877
NJ309E
45
100
25
1.5
1.5
97.5
98.5
6,500
7,600
0.996
NJ310
50
110
27
2
2
87
86
6,500
7,700
1.14
NJ310E
50
110
27
2
2
110
113
5,900
6,900
1.3
NJ311
55
120
29
2
2
111
111
5,900
7,000
1.45
NJ311E
55
120
29
2
2
137
143
5,300
6,300
1.65
NJ312
60
130
31
2.1
2.1
124
126
5,500
6,500
1.8
NJ312E
60
130
31
2.1
2.1
150
157
4,900
5,800
2.05
NJ313
65
140
33
2.1
2.1
135
139
5,100
6,000
2.23
NJ313E
65
140
33
2.1
2.1
181
191
4,600
5,400
2.54
NJ314
70
150
35
2.1
2.1
158
168
4,700
5,500
2.71
NJ314E
70
150
35
2.1
2.1
205
222
4,200
5,000
3.1
NJ315
75
160
37
2.1
2.1
190
205
4,400
5,200
3.28
NJ315E
75
160
37
2.1
2.1
240
263
4,000
4,700
3.74
NJ316
80
170
39
2.1
2.1
190
207
4,100
4,800
3.86
NJ316E
80
170
39
2.1
2.1
256
282
3,700
4,400
4.22
NJ317
85
180
41
3
3
212
228
3,900
4,600
4.54
NJ317E
85
180
41
3
3
291
330
3,500
4,100
4.81
NJ318
90
190
43
3
3
240
265
3,700
4,300
5.3
NJ318E
90
190
43
3
3
315
355
3,300
3,900
5.72
NJ319
95
200
45
3
3
259
285
3,400
4,000
6.13
NJ319E
95
200
45
3
3
335
385
3,100
3,600
6.62
NJ320
100
215
47
3
3
299
335
3,300
3,800
7.49
NJ320E
100
215
47
3
3
380
425
2,900
3,500
8.57
NJ321
105
225
49
3
3
320
360
3,100
3,700
8.53
NJ322
110
240
50
3
3
360
400
3,000
3,500
10
NJ322E
110
240
50
3
3
450
525
2,700
3,100
11.1
NJ324
120
260
55
3
3
450
510
2,700
3,200
12.8
NJ324E
120
260
55
3
3
530
610
2,400
2,800
13.9
NJ326
130
280
58
4
4
560
665
2,500
2,900
17.4
NJ326E
130
280
58
4
4
615
735
2,200
2,600
19.4
NJ328
140
300
62
4
4
615
745
2,300
2,700
21.2
NJ328E
140
300
62
4
4
665
795
2,100
2,400
23.2
NJ330
150
320
65
4
4
665
805
2,100
2,500
25.3
NJ330E
150
320
65
4
4
760
920
1,900
2,300
28.4