Original catalogue drawing - NSK catalogue, page 71
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
31
1.2205
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)
31
Width B (in)
1.2205
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
41000
Basic static load rating Cor (lbs)
51500
Limiting speed - grease (rpm)
3,000
Limiting speed - oil (rpm)
3,800
Weight
Weight (kg)
1.483
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.059
Shaft shoulder da min (in)
3.11
Shaft shoulder da max (in)
3.30
Housing shoulder Da min (in)
4.41
Housing shoulder Da max (in)
4.57
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
45,594
102
1,693
6
30,396
392
6,542
8
22,797
1,024
17,067
10
18,238
2,154
35,907
15
12,158
8,323
138,724
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 182,377 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.73 (dimensions) / p.74 (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.