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
55
2.1654
r
Chamfer (min)
3
0.1181
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
Outside dia. D (mm)
260
Width B (mm)
55
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
60923
Basic static load rating Cor (lbs)
56652
Basic dynamic load rating Cr (N)
271000
Basic static load rating C0r (N)
252000
Limiting speed - grease (rpm)
2,200
Limiting speed - oil (rpm)
3,000
Effective load centre a (mm)
82.3
Weight
Weight (kg)
14.5
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
3
Chamfer r1 min (mm)
1.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 700 rpm
4
67,750
64
1,524
6
45,167
216
5,143
8
33,875
512
12,190
10
27,100
1,000
23,810
15
18,067
3,375
80,357
Basic rating life per ISO 281: L10 = (C/P)3 with C = 271,000 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 CAT. No. E1103 (metric)
Catalogue page
p.216 (dimensions)
Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.
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.
