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Double Row Cylindrical Roller Bearings
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Double Row Cylindrical Roller Bearings
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Double Row Cylindrical Roller Bearings
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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
NNUP4964
-
320
440
118
3
3
1060
2500
1400
-
426
2.5
2.5
55.5
NN4964
NN4964K
320
440
118
3
3
1060
2500
1400
340
418
2.5
2.5
50.2
NN3064
NN3064K
320
480
121
4
4
1320
2600
1800
-
464
3
3
74
NNU3064
NNU3064K
320
480
121
4
4
1320
2600
1800
343
454
3
3
76.9
NNU4064
NNU4064K
320
480
160
4
4
2120
4300
1200
353
464
3
3
100
NNU4064X2
-
320
480
175
1.5
1.5
2460
5400
1200
359
472
1.5
1.5
115
NNU3164
NNU3164K
320
540
176
5
5
2090
3750
1000
347
509
4
4
154
NNU4164
NNU4164K30
320
540
218
5
5
3410
6200
1000
365
520
4
4
200
NNU4868
NNU4868K
340
420
80
2.1
2.1
644
1830
1400
360
409
2
2
25
NNUP4868
-
340
420
80
2.1
2.1
644
1830
1400
-
408
2
2
24.5
NN3968
NN3968K
340
460
90
3
3
905
2020
1700
361
438
2.5
2.5
42.9
NNU4968
NNU4968K
340
460
118
3
3
1100
2650
1700
375
446
2.5
2.5
56
NN4968
NN4968K
340
460
118
3
3
1100
2650
1700
361
438
2.5
2.5
52.1
NN3068
NN3068K
340
520
133
5
5
1670
3300
1600
368
490
4
4
102
NNU3068
-
340
520
133
5
5
1670
3300
1600
368
490
4
4
103
NNU4068
NNU4068K
340
520
180
5
5
2550
5100
1100
377
500
4
4
140
NNUB4068X2-305
-
340
520
305/20
5
5
3300
7100
1100
374
500
4
4
185
NNU4168
NNU4168K30
340
580
243
5
5
4020
7500
950
392
560
4
4
260
NN3972
-
360
480
90
3
3
930
2130
1700
381
457
2.5
2.5
44.9
NNU4972
NNU4972K
360
480
118
3
3
1120
2800
1700
395
466
2.5
2.5
58.5
NN3072
NN3072K
360
540
134
5
5
1720
3450
1500
-
520
4
4
105
NNU3072
-
360
540
134
5
5
1700
3450
1500
388
509
4
4
108
NNU4072
NNU4072K
360
540
180
5
5
2530
5450
1100
397
520
4
4
140
NN4072
NN4072K
360
540
180
5
5
2530
5450
1100
388
509
4
4
132
NNU4172
NNU4172K30
360
600
243
5
5
4290
8500
900
414
580
4
4
275
NNU4876
NNU4876K
380
480
100
2.1
2.1
952
2550
1200
406
469
2
2
44
NNU4976
NNU4976K
380
520
140
4
4
1450
3600
1500
421
504
3
3
87.5
NN4976
NN4976K
380
520
140
4
4
1450
3600
1500
404
493
3
3
81.3
NN3076
NN3076K
380
560
135
5
5
1680
3450
1500
-
540
4
4
110
NNU4076
NNU4076K
380
560
180
5
5
2650
6200
1000
417
540
4
4
150
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