Original catalogue drawing - NSK catalogue, page 105
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
B
Inner-ring / bearing width
92
3.622
T
Overall assembly width
104
4.0945
C
Cup / outer-ring width
75
2.9528
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)
320
Bore d (in)
12.5984
Outside dia. D (mm)
580
Outside dia. D (in)
22.8346
Width B (mm)
92
Width B (in)
3.6220
Overall width T (mm)
104
Overall width T (in)
4.0945
Cup width C (mm)
75
Cup width C (in)
2.9528
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
369000
Basic static load rating Cor (lbs)
544000
Limiting speed - grease (rpm)
530
Limiting speed - oil (rpm)
750
Weight
Weight (kg)
99.319
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.16
Shaft shoulder da min (in)
13.898
Housing shoulder Da max (in)
21.969
Shaft shoulder db max (in)
15.000
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 100 rpm
4
410,348
102
16,932
6
273,566
392
65,416
8
205,174
1,024
170,667
10
164,139
2,154
359,072
15
109,426
8,323
1,387,244
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,641,394 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.107 (dimensions) / p.108 (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.
