32256 is a NSK tapered roller bearing, bore 280 mm, O.D. 500 mm, width 130 mm, dynamic rating 438,000 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 113
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
280
11.0236
D
Outside diameter
500
19.685
B
Inner-ring / bearing width
130
5.1181
T
Overall assembly width
137
5.3937
C
Cup / outer-ring width
106
4.1732
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)
280
Bore d (in)
11.0236
Outside dia. D (mm)
500
Outside dia. D (in)
19.6850
Width B (mm)
130
Width B (in)
5.1181
Overall width T (mm)
137
Overall width T (in)
5.3937
Cup width C (mm)
106
Cup width C (in)
4.1732
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
438000
Basic static load rating Cor (lbs)
776000
Limiting speed - grease (rpm)
650
Limiting speed - oil (rpm)
880
Weight
Weight (kg)
109.234
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
4.00
Shaft shoulder da min (in)
12.323
Housing shoulder Da max (in)
18.583
Shaft shoulder db max (in)
12.795
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 200 rpm
4
487,080
102
8,466
6
324,720
392
32,708
8
243,540
1,024
85,333
10
194,832
2,154
179,536
15
129,888
8,323
693,622
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,948,321 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.115 (dimensions) / p.116 (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.
