Original catalogue drawing - NSK catalogue, page 191
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)
25100
Basic static load rating Cor (lbs)
26200
Limiting speed - grease (rpm)
7,700
Limiting speed - oil (rpm)
11,700
Weight
Weight (kg)
2.409
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 2,500 rpm
4
27,913
64
427
6
18,608
216
1,440
8
13,956
512
3,413
10
11,165
1,000
6,667
15
7,443
3,375
22,500
Basic rating life per ISO 281: L10 = (C/P)3 with C = 111,650 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.193 (dimensions) / p.194 (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.
