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
25
0.9843
D
Outside diameter
47
1.8504
B
Inner-ring / bearing width
15
0.5906
T
Overall assembly width
15
0.5906
C
Cup / outer-ring width
11.5
0.4528
r
Chamfer (min)
0.6
0.0236
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)
25
Outside dia. D (mm)
47
Width B (mm)
15
Overall width T (mm)
15
Cup width C (mm)
11.5
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
7644
Basic static load rating Cor (lbs)
7419
Basic dynamic load rating Cr (N)
34000
Basic static load rating C0r (N)
33000
Limiting speed - grease (rpm)
8,000
Weight
Weight (kg)
0.116
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
0.6
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 2,600 rpm
4
8,500
102
651
6
5,667
392
2,516
8
4,250
1,024
6,564
10
3,400
2,154
13,810
15
2,267
8,323
53,356
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 34,000 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.261 (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.
