Original catalogue drawing - NSK catalogue, page 57
Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own
dimensions for selection reference only - not a manufacturing or assembly drawing.
Dimension table (mm / inch)
Symbol
Dimension
mm
inch
d
Bore diameter
55
2.1654
D
Outside diameter
140
5.5118
B
Inner-ring / bearing width
33
1.2992
Notes
Cylindrical roller entries from the NSK inch catalogue are series numbers covering the N / NU / NJ / NUP / NH prefixes of the same size. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.
Main dimensions
Bore d (mm)
55
Bore d (in)
2.1654
Outside dia. D (mm)
140
Outside dia. D (in)
5.5118
Width B (mm)
33
Width B (in)
1.2992
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
31200
Basic static load rating Cor (lbs)
31000
Limiting speed - grease (rpm)
4,500
Limiting speed - oil (rpm)
5,600
Weight
Weight (kg)
2.455
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.079
Fillet rb max (in)
0.079
Shaft shoulder da min (in)
2.598
Housing shoulder Da max (in)
5.079
Shaft shoulder db min (in)
2.598
Shaft shoulder db max (in)
2.953
Housing shoulder Db min (in)
4.685
Housing shoulder Db max (in)
5.079
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,500 rpm
4
34,696
102
1,129
6
23,131
392
4,361
8
17,348
1,024
11,378
10
13,878
2,154
23,938
15
9,252
8,323
92,483
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 138,785 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
Brand
NSK
Source catalogue
NSK inch product catalogue
Catalogue page
p.59 (dimensions) / p.60 (ratings)
Dimensions in inches and millimetres, load ratings in lbs.
Send us the quantity you need and we will come back with price and
lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.
