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
52
2.0472
r
Chamfer (min)
1
0.0394
Notes
Thrust bearing ratings are axial values Ca / Coa; T is the overall height. 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)
52
Load ratings & speeds
Basic dynamic axial rating Ca (lbs)
8093
Basic static axial rating Coa (lbs)
13826
Basic dynamic axial rating Ca (N)
36000
Basic static axial rating C0a (N)
61500
Limiting speed - grease (rpm)
3,000
Limiting speed - oil (rpm)
4,500
Weight
Weight (kg)
0.35
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
1
Chamfer r1 min (mm)
0.3
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
9,000
102
1,693
6
6,000
392
6,542
8
4,500
1,024
17,067
10
3,600
2,154
35,907
15
2,400
8,323
138,724
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 36,000 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.319 (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.
