Original catalogue drawing - NSK catalogue, page 77
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
200
7.874
D
Outside diameter
420
16.5354
B
Inner-ring / bearing width
138
5.4331
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)
200
Bore d (in)
7.8740
Outside dia. D (mm)
420
Outside dia. D (in)
16.5354
Width B (mm)
138
Width B (in)
5.4331
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
450000
Basic static load rating Cor (lbs)
670000
Limiting speed - grease (rpm)
850
Limiting speed - oil (rpm)
1,000
Weight
Weight (kg)
91.544
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.157
Shaft shoulder da min (in)
8.74
Shaft shoulder da max (in)
10.12
Housing shoulder Da min (in)
13.85
Housing shoulder Da max (in)
15.67
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 200 rpm
4
500,425
102
8,466
6
333,617
392
32,708
8
250,212
1,024
85,333
10
200,170
2,154
179,536
15
133,447
8,323
693,622
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 2,001,700 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.79 (dimensions) / p.80 (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.