Original catalogue drawing - NSK catalogue, page 119
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
55
2.1654
B
Inner-ring / bearing width
20
0.7874
T
Overall assembly width
20
0.7874
C
Cup / outer-ring width
16
0.6299
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)
55
Outside dia. D (in)
2.1654
Width B (mm)
20
Width B (in)
0.7874
Overall width T (mm)
20
Overall width T (in)
0.7874
Cup width C (mm)
16
Cup width C (in)
0.6299
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
9440
Basic static load rating Cor (lbs)
12100
Limiting speed - grease (rpm)
6,700
Limiting speed - oil (rpm)
9,000
Weight
Weight (kg)
0.209
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.04
Shaft shoulder da min (in)
1.535
Housing shoulder Da max (in)
1.929
Shaft shoulder db max (in)
1.378
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 2,200 rpm
4
10,498
102
770
6
6,999
392
2,973
8
5,249
1,024
7,758
10
4,199
2,154
16,321
15
2,799
8,323
63,057
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 41,991 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.121 (dimensions) / p.122 (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.
