Original catalogue drawing - NSK catalogue, page 117
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
50
1.9685
D
Outside diameter
72
2.8346
B
Inner-ring / bearing width
15
0.5906
T
Overall assembly width
15
0.5906
C
Cup / outer-ring width
12
0.4724
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)
50
Bore d (in)
1.9685
Outside dia. D (mm)
72
Outside dia. D (in)
2.8346
Width B (mm)
15.0000
Width B (in)
0.5906
Overall width T (mm)
15
Overall width T (in)
0.5906
Cup width C (mm)
12
Cup width C (in)
0.4724
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
8090
Basic static load rating Cor (lbs)
12100
Limiting speed - grease (rpm)
4,500
Limiting speed - oil (rpm)
6,300
Weight
Weight (kg)
0.195
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.02
Shaft shoulder da min (in)
2.283
Housing shoulder Da max (in)
2.638
Shaft shoulder db max (in)
0.090
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,500 rpm
4
8,997
102
1,129
6
5,998
392
4,361
8
4,498
1,024
11,378
10
3,599
2,154
23,938
15
2,399
8,323
92,483
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 35,986 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.119 (dimensions) / p.120 (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.
