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
300
11.811
D
Outside diameter
420
16.5354
T
Overall assembly width
73
2.874
C
Cup / outer-ring width
37.998
1.496
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)
300
Bore d (in)
11.8110
Outside dia. D (mm)
420
Outside dia. D (in)
16.9540
Overall width T (mm)
73
Overall width T (in)
2.8740
Cup width C (in)
1.496
Bore d1 (in)
15.748
Outside dia. D1 (in)
13.898
Load ratings & speeds
Basic dynamic axial rating Ca (lbs)
261000
Basic static axial rating Coa (lbs)
1160000
Limiting speed - oil (rpm)
950
Weight
Weight (kg)
29.937
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.098
Shaft shoulder da min (in)
14.961
Housing shoulder Da (in)
13.976
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 300 rpm
4
290,246
102
5,644
6
193,498
392
21,805
8
145,123
1,024
56,889
10
116,099
2,154
119,691
15
77,399
8,323
462,415
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,160,986 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.
