Original catalogue drawing - NSK catalogue, page 151
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
320
12.5984
D
Outside diameter
500
19.685
T
Overall assembly width
109
4.2913
C
Cup / outer-ring width
53.01
2.087
Notes
Thrust bearing ratings are axial values Ca / Coa; T is the overall height. 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)
320
Bore d (in)
12.5984
Outside dia. D (mm)
500
Outside dia. D (in)
19.6850
Overall width T (mm)
109
Overall width T (in)
4.2913
Cup width C (in)
2.087
Bore d1 (in)
18.504
Outside dia. D1 (in)
15.709
Load ratings & speeds
Basic dynamic axial rating Ca (lbs)
501000
Basic static axial rating Coa (lbs)
2110000
Limiting speed - oil (rpm)
670
Weight
Weight (kg)
77.111
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.157
Shaft shoulder da min (in)
17.323
Housing shoulder Da (in)
15.748
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 200 rpm
4
557,140
102
8,466
6
371,427
392
32,708
8
278,570
1,024
85,333
10
222,856
2,154
179,536
15
148,571
8,323
693,622
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 2,228,559 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.153 (dimensions) / p.154 (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.
