Original catalogue drawing - NSK catalogue, page 221
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
40
1.5748
D
Outside diameter
68
2.6772
B
Inner-ring / bearing width
21
0.8268
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)
40
Bore d (in)
1.5748
Outside dia. D (mm)
68
Outside dia. D (in)
2.6772
Width B (mm)
21
Width B (in)
0.8268
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
9700
Basic static load rating Cor (lbs)
12500
Limiting speed - grease (rpm)
13,000
Limiting speed - oil (rpm)
15,000
Weight
Weight (kg)
0.304
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.0394
Shaft shoulder da min (in)
2.4803
Shaft shoulder da (in)
1.7717
Housing shoulder Db (in)
2.4409
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 3,000 rpm
4
10,787
64
356
6
7,191
216
1,200
8
5,393
512
2,844
10
4,315
1,000
5,556
15
2,877
3,375
18,750
Basic rating life per ISO 281: L10 = (C/P)3 with C = 43,148 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.223 (dimensions) / p.224 (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.
