Original catalogue drawing - NSK catalogue, page 191
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
20
0.7874
D
Outside diameter
42
1.6535
B
Inner-ring / bearing width
12
0.4724
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)
20
Bore d (in)
0.7874
Outside dia. D (mm)
42
Outside dia. D (in)
1.6535
Width B (mm)
12
Width B (in)
0.4724
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
2490
Basic static load rating Cor (lbs)
1470
Limiting speed - grease (rpm)
37,100
Limiting speed - oil (rpm)
56,500
Weight
Weight (kg)
0.077
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.024
Fillet rb (in)
0.012
Shaft shoulder da (in)
0.984
Housing shoulder Da (in)
1.457
Housing shoulder Db (in)
1.555
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 3,000 rpm
4
2,769
64
356
6
1,846
216
1,200
8
1,385
512
2,844
10
1,108
1,000
5,556
15
738
3,375
18,750
Basic rating life per ISO 281: L10 = (C/P)3 with C = 11,076 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.193 (dimensions) / p.194 (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.
