Original catalogue drawing - NSK catalogue, page 115
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
120
4.7244
D
Outside diameter
260
10.2362
B
Inner-ring / bearing width
86
3.3858
T
Overall assembly width
90.5
3.563
C
Cup / outer-ring width
69
2.7165
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)
120
Bore d (in)
4.7244
Outside dia. D (mm)
260
Outside dia. D (in)
10.2362
Width B (mm)
86
Width B (in)
3.3858
Overall width T (mm)
90.5
Overall width T (in)
3.5630
Cup width C (mm)
69
Cup width C (in)
2.7165
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
173000
Basic static load rating Cor (lbs)
238000
Limiting speed - grease (rpm)
1,400
Limiting speed - oil (rpm)
1,900
Weight
Weight (kg)
21.772
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.12
Shaft shoulder da min (in)
5.713
Housing shoulder Da max (in)
9.685
Shaft shoulder db max (in)
9.692
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 400 rpm
4
192,386
102
4,233
6
128,257
392
16,354
8
96,193
1,024
42,667
10
76,954
2,154
89,768
15
51,303
8,323
346,811
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 769,542 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.117 (dimensions) / p.118 (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.