Original catalogue drawing - NSK catalogue, page 115
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
30
1.1811
D
Outside diameter
72
2.8346
B
Inner-ring / bearing width
27
1.063
T
Overall assembly width
28.75
1.1319
C
Cup / outer-ring width
23
0.9055
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)
30
Bore d (in)
1.1811
Outside dia. D (mm)
72
Outside dia. D (in)
2.8346
Width B (mm)
27
Width B (in)
1.0630
Overall width T (mm)
28.75
Overall width T (in)
1.1319
Cup width C (mm)
23
Cup width C (in)
0.9055
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
18000
Basic static load rating Cor (lbs)
19900
Limiting speed - grease (rpm)
5,600
Limiting speed - oil (rpm)
7,500
Weight
Weight (kg)
0.572
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.06
Shaft shoulder da min (in)
1.693
Housing shoulder Da max (in)
2.480
Shaft shoulder db max (in)
1.496
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,800 rpm
4
20,017
102
941
6
13,345
392
3,634
8
10,008
1,024
9,481
10
8,007
2,154
19,948
15
5,338
8,323
77,069
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 80,068 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.117 (dimensions) / p.118 (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.
