Original catalogue drawing - NSK catalogue, page 223
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
240
9.4488
D
Outside diameter
320
12.5984
B
Inner-ring / bearing width
60
2.3622
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)
240
Bore d (in)
9.4488
Outside dia. D (mm)
320
Outside dia. D (in)
12.5984
Width B (mm)
60
Width B (in)
2.3622
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
104000
Basic static load rating Cor (lbs)
218000
Limiting speed - grease (rpm)
2,600
Limiting speed - oil (rpm)
2,800
Weight
Weight (kg)
12.075
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.0787
Shaft shoulder da min (in)
12.1654
Shaft shoulder da (in)
9.8819
Housing shoulder Db (in)
11.8898
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 800 rpm
4
115,654
64
1,333
6
77,103
216
4,500
8
57,827
512
10,667
10
46,262
1,000
20,833
15
30,841
3,375
70,312
Basic rating life per ISO 281: L10 = (C/P)3 with C = 462,615 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.225 (dimensions) / p.226 (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.
