Original catalogue drawing - NSK catalogue, page 211
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
27
1.063
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)
27
Width B (in)
1.0630
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
12814
Basic static load rating Cor (lbs)
31698
Limiting speed - grease (rpm)
0
Limiting speed - oil (rpm)
400
Preload (lbs)
87.68
Weight
Weight (kg)
2.263
Mounting dimensions (fillets / shoulders)
Fillet rb (in)
0.03937
Shaft shoulder da (in)
5.1181
Housing shoulder Db max (in)
6.85039
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 100 rpm
4
14,250
64
10,667
6
9,500
216
36,000
8
7,125
512
85,333
10
5,700
1,000
166,667
15
3,800
3,375
562,500
Basic rating life per ISO 281: L10 = (C/P)3 with C = 57,000 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.217 (dimensions) / p.218 (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.
