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
300
11.811
D
Outside diameter
480
18.8976
B
Inner-ring / bearing width
100
3.937
T
Overall assembly width
100
3.937
C
Cup / outer-ring width
74
2.9134
r
Chamfer (min)
4
0.1575
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)
300
Outside dia. D (mm)
480
Width B (mm)
100
Overall width T (mm)
100
Cup width C (mm)
74
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
415897
Basic static load rating Cor (lbs)
654194
Basic dynamic load rating Cr (N)
1850000
Basic static load rating C0r (N)
2910000
Limiting speed - grease (rpm)
630
Effective load centre a (mm)
5
Weight
Weight (kg)
60.0
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
4
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 200 rpm
4
462,500
102
8,466
6
308,333
392
32,708
8
231,250
1,024
85,333
10
185,000
2,154
179,536
15
123,333
8,323
693,622
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,850,000 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.270 (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.
