Original catalogue drawing - NSK catalogue, page 53
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
100
3.937
B
Inner-ring / bearing width
21
0.8268
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)
100
Outside dia. D (in)
3.9370
Width B (mm)
21
Width B (in)
0.8268
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
13000
Basic static load rating Cor (lbs)
14000
Limiting speed - grease (rpm)
6,300
Limiting speed - oil (rpm)
7,500
Weight
Weight (kg)
0.653
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.059
Fillet rb max (in)
0.039
Shaft shoulder da min (in)
2.441
Housing shoulder Da max (in)
3.622
Shaft shoulder db min (in)
2.421
Shaft shoulder db max (in)
2.520
Housing shoulder Db min (in)
3.583
Housing shoulder Db max (in)
3.681
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 2,100 rpm
4
14,457
102
806
6
9,638
392
3,115
8
7,228
1,024
8,127
10
5,783
2,154
17,099
15
3,855
8,323
66,059
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 57,827 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.55 (dimensions) / p.56 (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.
