Original catalogue drawing - NSK catalogue, page 27
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
r
Chamfer (min)
1.499
0.059
Notes
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)
6070
Basic static load rating Cor (lbs)
3080
Limiting speed - grease (rpm)
6,300
Limiting speed - oil (rpm)
7,500
Weight
Weight (kg)
0.694
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.059
Shaft shoulder da min (in)
2.482
Housing shoulder Da max (in)
3.625
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 2,100 rpm
4
6,750
64
508
6
4,500
216
1,714
8
3,375
512
4,063
10
2,700
1,000
7,937
15
1,800
3,375
26,786
Basic rating life per ISO 281: L10 = (C/P)3 with C = 27,001 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.29 (dimensions) / p.30 (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.
