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SAK-Bearings
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Roller Bearings
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Cylindrical Roller Bearing
> Double Row Cylindrical Roller Bearings
Double Row Cylindrical Roller Bearings
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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
NN4976
NN4976K
380
520
140
4
4
1450
3600
1500
404
493
3
3
81.3
NNU4976
NNU4976K
380
520
140
4
4
1450
3600
1500
421
504
3
3
87.5
NNU4876
NNU4876K
380
480
100
2.1
2.1
952
2550
1200
406
469
2
2
44
NNU4180
NNU4180K30
400
650
250
6
6
4730
9500
800
456
624
5
5
325
NNU4080
NNU4080K
400
600
200
5
5
3470
7200
950
440
580
4
4
205
NN3080
NN3080K
400
600
148
5
5
2160
4500
1400
-
580
4
4
140
NN4980
NN4980K
400
540
140
4
4
1470
3800
1500
425
513
3
3
84.1
NNU4980
NNU4980K
400
540
140
4
4
1470
3800
1500
441
524
3
3
91.5
NN3980
-
400
540
106
4
4
1290
2890
1500
425
513
3
3
68.7
NNUP4880
-
400
500
100
2.1
2.1
968
2750
1200
-
488
2
2
45.5
NNU4880
NNU4880K
400
500
100
2.1
2.1
968
2750
1200
426
489
2
2
46
NNU4184
NNU4184K30
420
700
280
6
6
5500
11400
750
480
674
5
5
440
NNU3184
-
420
650
200
6
6
2770
5400
800
435
611
5
5
262
NNUP5084X2
-
420
620
260
6
6
4290
10200
900
-
594
5
5
280
NN4084
NN4084K
420
620
200
5
5
3150
7100
900
449
588
4
4
189
NNU4084
NNU4084K
420
620
200
5
5
3150
7100
900
460
600
4
4
183
NNU3084
NNU3084K
420
620
150
5
5
2120
4500
1300
449
588
4
4
155
NN3084
NN3084K
420
620
150
5
5
2120
4500
1300
-
600
4
4
145
NN4984
NN4984K
420
560
140
4
4
1510
4000
1400
445
533
3
3
87.9
NNU4984
NNU4984K
420
560
140
4
4
1510
4000
1400
461
544
3
3
95.5
NN3984
-
420
560
106
4
4
1280
2900
900
445
533
3
3
71.2
NNU4884
NNU4884K
420
520
100
2.1
2.1
990
2850
1000
446
509
2
2
48
NNU4188
NNU4188K30
440
720
280
6
6
5720
11800
700
500
694
5
5
450
NNU3184
-
440
700
224
6
6
3550
6800
800
455
660
5
5
347
NNU4088
NNU4088K
440
650
212
6
6
3910
8300
850
477
624
5
5
215
NNU3088
-
440
650
157
6
6
2360
4900
1200
476
611
5
5
178
NN3088
NN3088K
440
650
157
6
6
2360
4900
1200
-
624
5
5
170
NNU4988
NNU4988K
440
600
160
4
4
2050
5200
1300
484
584
3
3
130
NNU4888
NNU4888K
440
540
100
2.1
2.1
1010
2900
1000
464
529
2
2
50
NNU4192
NNU4192K30
460
760
300
7.5
7.5
6440
13200
670
526
727
6
6
535
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