Original catalogue drawing - NSK catalogue, page 193
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)
23800
Basic static load rating Cor (lbs)
24900
Limiting speed - grease (rpm)
6,700
Limiting speed - oil (rpm)
10,000
Weight
Weight (kg)
2.431
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.079
Fillet rb (in)
0.039
Shaft shoulder da (in)
5.118
Housing shoulder Da (in)
6.693
Housing shoulder Db (in)
6.850
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 2,200 rpm
4
26,467
64
485
6
17,645
216
1,636
8
13,233
512
3,879
10
10,587
1,000
7,576
15
7,058
3,375
25,568
Basic rating life per ISO 281: L10 = (C/P)3 with C = 105,868 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.195 (dimensions) / p.196 (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.
