Original catalogue drawing - NSK catalogue, page 95
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
480
18.8976
D
Outside diameter
790
31.1024
B
Inner-ring / bearing width
308
12.126
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)
480
Bore d (in)
18.8976
Outside dia. D (mm)
790
Outside dia. D (in)
31.1024
Width B (mm)
308
Width B (in)
12.1260
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
1610000
Basic static load rating Cor (lbs)
3300000
Limiting speed - grease (rpm)
300
Limiting speed - oil (rpm)
380
Weight
Weight (kg)
566.083
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.236
Shaft shoulder da min (in)
20.31
Shaft shoulder da max (in)
21.25
Housing shoulder Da min (in)
26.38
Housing shoulder Da max (in)
29.69
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 100 rpm
4
1,790,409
102
16,932
6
1,193,606
392
65,416
8
895,205
1,024
170,667
10
716,164
2,154
359,072
15
477,442
8,323
1,387,244
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 7,161,637 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.97 (dimensions) / p.98 (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.
