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
220
8.6614
D
Outside diameter
300
11.811
B
Inner-ring / bearing width
38
1.4961
r
Chamfer (min)
2.1
0.0827
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)
220
Outside dia. D (mm)
300
Width B (mm)
38
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
36194
Basic static load rating Cor (lbs)
37993
Basic dynamic load rating Cr (N)
161000
Basic static load rating C0r (N)
169000
Factor f0
16.6
Limiting speed - grease (rpm)
1,800
Limiting speed - oil (rpm)
2,200
Weight
Weight (kg)
7.88
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
2.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 600 rpm
4
40,250
64
1,778
6
26,833
216
6,000
8
20,125
512
14,222
10
16,100
1,000
27,778
15
10,733
3,375
93,750
Basic rating life per ISO 281: L10 = (C/P)3 with C = 161,000 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.185 (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.
