Original catalogue drawing - NSK catalogue, page 197
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
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)
71700
Basic static load rating Cor (lbs)
89300
Limiting speed - grease (rpm)
3,200
Limiting speed - oil (rpm)
4,500
Weight
Weight (kg)
17.903
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.118
Fillet rb (in)
0.059
Shaft shoulder da (in)
7.795
Housing shoulder Da (in)
11.890
Housing shoulder Db (in)
12.244
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
79,734
64
1,067
6
53,156
216
3,600
8
39,867
512
8,533
10
31,894
1,000
16,667
15
21,262
3,375
56,250
Basic rating life per ISO 281: L10 = (C/P)3 with C = 318,937 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.199 (dimensions) / p.200 (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.
