Original catalogue drawing - NSK catalogue, page 37
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
180
7.0866
D
Outside diameter
320
12.5984
B
Inner-ring / bearing width
52
2.0472
r
Chamfer (min)
2.997
0.118
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)
180
Bore d (in)
7.0866
Outside dia. D (mm)
320
Outside dia. D (in)
12.5984
Width B (mm)
52
Width B (in)
2.0472
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
62000
Basic static load rating Cor (lbs)
78300
Limiting speed - grease (rpm)
1,500
Limiting speed - oil (rpm)
2,000
Weight
Weight (kg)
17.69
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.118
Shaft shoulder da min (in)
7.795
Housing shoulder Da max (in)
11.890
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
68,947
64
2,133
6
45,965
216
7,200
8
34,474
512
17,067
10
27,579
1,000
33,333
15
18,386
3,375
112,500
Basic rating life per ISO 281: L10 = (C/P)3 with C = 275,790 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.39 (dimensions) / p.40 (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.
