Original catalogue drawing - NSK catalogue, page 127
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
20
0.7874
D
Outside diameter
52
2.0472
B
Inner-ring / bearing width
16
0.6299
T
Overall assembly width
16.25
0.6398
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)
20
Bore d (in)
0.7874
Outside dia. D (mm)
52
Outside dia. D (in)
2.0472
Width B (mm)
16
Width B (in)
0.6299
Overall width T (mm)
16.25
Overall width T (in)
0.6398
Cup width C (mm)
12
Cup width C (in)
0.4724
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
6970
Basic static load rating Cor (lbs)
6500
Limiting speed - grease (rpm)
8,000
Limiting speed - oil (rpm)
11,000
Weight
Weight (kg)
0.168
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.079
Shaft shoulder da min (in)
1.221
Housing shoulder Da max (in)
1.694
Shaft shoulder db max (in)
1.064
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 2,600 rpm
4
7,751
102
651
6
5,167
392
2,516
8
3,876
1,024
6,564
10
3,100
2,154
13,810
15
2,067
8,323
53,356
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 31,004 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.129 (dimensions) / p.130 (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.
