Original catalogue drawing - NSK catalogue, page 31
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
39.7
1.563
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)
39.7
Width B (in)
1.5630
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
18300
Basic static load rating Cor (lbs)
20600
Limiting speed - grease (rpm)
3,200
Limiting speed - oil (rpm)
4,300
Weight
Weight (kg)
1.896
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.059
Shaft shoulder da min (in)
3.081
Housing shoulder Da max (in)
4.524
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
20,351
64
1,067
6
13,567
216
3,600
8
10,175
512
8,533
10
8,140
1,000
16,667
15
5,427
3,375
56,250
Basic rating life per ISO 281: L10 = (C/P)3 with C = 81,402 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.33 (dimensions) / p.34 (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.
