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Double Row Cylindrical Roller Bearing
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Double Row Cylindrical Roller Bearing
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Description And Technical diameters
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Inquiry
Bearing NO.
Boundary dimensions(mm)
Basic load ratings(kN)
Limiting speed(rpm)
Abutment and fillet dimensions(mm)
Weight (kg)
Cylindrical bore
Tapered bore
d
D
B/C
r 1.2min
r3.4min
Cr
Cor
Speed Ratings
da max
Da max
ra max
rb max
Refer
NN3040 bearing
NN3040K
200
310
82
2.1
2.1
644
1140
2000
-
299
2
2
22
NNU3040 bearing
NNU3040K
200
310
82
2.1
2.1
644
1140
2000
216
293
2
2
22.9
NN4040 bearing
NN4040K
200
310
109
2.1
2.1
890
1730
2000
216
293
2
2
30.4
NNU4040X2 bearing
-
200
310
115
2.1
2.1
1010
1860
2000
225
299
2
2
31.5
NNU4140 bearing
NNU4140K30
200
340
140
3
3
1470
2550
1700
231
327
2.5
2.5
51
NN3944 bearing
NN3944K
220
300
60
2.1
2.1
440
895
2800
236
283
2
2
11.4
NNU4944 bearing
NNU4944K
220
300
80
2.1
2.1
512
1140
2800
242
289
2
2
16.5
NN4944 bearing
NN4944K
220
300
80
2.1
2.1
512
1140
2800
236
283
2
2
16.6
NNU5944X2 bearing
-
220
300
100
2.1
2.1
897
1930
2200
236.5
289
2
2
20.5
NN3044 bearing
NN3044K
220
340
90
3
3
809
1460
2600
-
327
2.5
2.5
28.5
NNU3044 bearing
-
220
340
90
3
3
809
1460
2600
238
320
2.5
2.5
30
NN4044 bearing
NN4044K
220
340
118
3
3
1190
2400
2600
238
320
2.5
2.5
39.8
NN3144 bearing
-
220
370
120
4
4
1050
1810
1500
241
346
3
3
51.9
NNU3144 bearing
-
220
370
120
4
4
1050
1810
1500
241
346
3
3
52.3
NNU4144 bearing
NNU4144K30
220
370
150
4
4
1650
2900
1500
254
354
3
3
65
NNU4848 bearing
NNU4848K
240
300
60
2
2
358
930
2200
255
290
2
2
9.9
NN4848 bearing
-
240
300
60
1.1
1.1
358
930
2200
252
287
1
1
9.77
NN3948 bearing
NN3948K
240
320
60
2.1
2.1
460
975
2600
257
302
2
2
12.2
NNU4948 bearing
NNU4948K
240
320
80
2.1
2.1
528
1220
2600
262
309
2
2
17.5
NN4948 bearing
NN4948K
240
320
80
2.1
2.1
528
1220
2600
257
302
2
2
17.9
NNU5948X2 bearing
-
240
320
100
2.1
2.1
880
1960
1400
255
293
2
2
22.5
NN3048 bearing
NN3048K
240
360
92
3
3
842
1560
2400
-
347
2.5
2.5
32
NNU3048 bearing
NNU3048K
240
360
92
3
3
842
1560
2400
259
340
2.5
2.5
30.8
NN4048 bearing
NN4048K
240
360
118
3
3
1240
2600
2400
259
340
2.5
2.5
39.3
NNU4048 bearing
-
240
360
118
3
3
1240
2600
2400
259
340
2.5
2.5
42.7
NN3148 bearing
NN3148K
240
400
128
4
4
1170
2040
1400
262
376
3
3
64.2
NNU4148 bearing
NNU4148K30
240
400
160
4
4
1980
3650
1400
278
384
3
3
85
NN3952 bearing
NN3952K
260
360
75
2.1
2.1
670
1380
2400
277
342
2
2
21.4
NNU4952 bearing
NNU4952K
260
360
100
2.1
2.1
748
1700
2400
288
349
2
2
30.5
NN4952 bearing
NN4952K
260
360
100
2.1
2.1
748
1700
2400
277
342
2
2
28.3
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