Original catalogue drawing - NSK catalogue, page 219
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
120
4.7244
D
Outside diameter
180
7.0866
B
Inner-ring / bearing width
28
1.1024
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)
120
Bore d (in)
4.7244
Outside dia. D (mm)
180
Outside dia. D (in)
7.0866
Width B (mm)
28
Width B (in)
1.1024
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
31100
Basic static load rating Cor (lbs)
43000
Limiting speed - grease (rpm)
5,600
Limiting speed - oil (rpm)
6,300
Weight
Weight (kg)
2.377
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.0394
Shaft shoulder da min (in)
6.8307
Shaft shoulder da (in)
5.0787
Housing shoulder Db (in)
6.5748
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,800 rpm
4
34,585
64
593
6
23,057
216
2,000
8
17,292
512
4,741
10
13,834
1,000
9,259
15
9,223
3,375
31,250
Basic rating life per ISO 281: L10 = (C/P)3 with C = 138,340 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.221 (dimensions) / p.222 (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.
