Original catalogue drawing - NSK catalogue, page 111
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
310
12.2047
B
Inner-ring / bearing width
70
2.7559
T
Overall assembly width
70
2.7559
C
Cup / outer-ring width
53
2.0866
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)
310
Outside dia. D (in)
12.2047
Width B (mm)
70
Width B (in)
2.7559
Overall width T (mm)
70
Overall width T (in)
2.7559
Cup width C (mm)
53
Cup width C (in)
2.0866
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
760000
Basic static load rating Cor (lbs)
308000
Limiting speed - grease (rpm)
1,000
Limiting speed - oil (rpm)
1,400
Weight
Weight (kg)
18.901
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.08
Shaft shoulder da min (in)
8.583
Housing shoulder Da max (in)
11.732
Shaft shoulder db max (in)
8.701
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 300 rpm
4
845,162
102
5,644
6
563,441
392
21,805
8
422,581
1,024
56,889
10
338,065
2,154
119,691
15
225,377
8,323
462,415
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 3,380,648 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.113 (dimensions) / p.114 (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.