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
580
22.8346
T
Overall assembly width
155
6.1024
C
Cup / outer-ring width
75.006
2.953
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)
580
Outside dia. D (in)
22.8346
Overall width T (mm)
155
Overall width T (in)
6.1024
Cup width C (in)
2.953
Bore d1 (in)
21.850
Outside dia. D1 (in)
17.165
Load ratings & speeds
Basic dynamic axial rating Ca (lbs)
821000
Basic static axial rating Coa (lbs)
3300000
Limiting speed - oil (rpm)
560
Weight
Weight (kg)
174.633
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.236
Shaft shoulder da min (in)
19.488
Housing shoulder Da (in)
17.126
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 100 rpm
4
912,997
102
16,932
6
608,665
392
65,416
8
456,499
1,024
170,667
10
365,199
2,154
359,072
15
243,466
8,323
1,387,244
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 3,651,990 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.
