Original catalogue drawing - NSK catalogue, page 310
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
3.175
0.125
D
Outside diameter
12.7
0.5
B
Inner-ring / bearing width
4.366
0.1719
r
Chamfer (min)
0.305
0.012
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 (in)
0.1250
Outside dia. D (in)
0.5000
Width B (in)
0.1719
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
143
Basic static load rating Cor (lbs)
51
Limiting speed - grease (rpm)
56,000
Weight
Weight (kg)
0.00272
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.012
Shaft shoulder (in)
0.188
Housing shoulder (in)
0.438
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 3,000 rpm
4
159
64
356
6
106
216
1,200
8
80
512
2,844
10
64
1,000
5,556
15
42
3,375
18,750
Basic rating life per ISO 281: L10 = (C/P)3 with C = 636 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.15 (dimensions) / p.15 (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.
