Original catalogue drawing - NSK catalogue, page 27
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
70
2.7559
D
Outside diameter
125
4.9213
B
Inner-ring / bearing width
24
0.9449
r
Chamfer (min)
1.499
0.059
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)
70
Bore d (in)
2.7559
Outside dia. D (mm)
125
Outside dia. D (in)
4.9213
Width B (mm)
24
Width B (in)
0.9449
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
7760
Basic static load rating Cor (lbs)
4270
Limiting speed - grease (rpm)
5,000
Limiting speed - oil (rpm)
6,000
Weight
Weight (kg)
1.288
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.059
Shaft shoulder da min (in)
3.073
Housing shoulder Da max (in)
4.610
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,600 rpm
4
8,630
64
667
6
5,753
216
2,250
8
4,315
512
5,333
10
3,452
1,000
10,417
15
2,301
3,375
35,156
Basic rating life per ISO 281: L10 = (C/P)3 with C = 34,518 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.29 (dimensions) / p.30 (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.
