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53408U

Single-Direction Thrust Ball Bearings
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Images shown are representations. Designs and specifications may differ from actual products.
Parts Number
53408U Single-Direction Thrust Ball Bearings
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Display units

Parts Number

53408U

Boundary Dimensions

d 40 mm Bore diameter
D 90 mm Outside diameter
T,T3 38.2 mm Height
T4 42 mm Height bearing include seat washer
r (min.) 1.1 mm Chamfer dimension

Basic Load Ratings

Ca 103000 N Basic dynamic load rating
C0a 188000 N Basic static load rating

Speeds

Grease 1700 min-1 Grease lubrication
Oil (Oil-bath) 2600 min-1 Oil-bath lubrication

Dimensions

A 26 mm Centre height housing washer sphere
R 72 mm Radius sphered housing washer
b 12 mm Height sphered housing washer
D2 65 mm Inner diameter sphered seat washer
d1 90 mm Outside diameter shaft washer
D3 95 mm Outside diameter sphered housing washer
D1 42 mm Inner diameter housing washer

Abutment and Fillet Dimensions

da (min.) 70 mm Diameter of shaft abutment
Da (max.) 60 mm Diameter of housing abutment
ra (max.) 1 mm Radius of shaft or housing fillet

Mass

(approx.) 1.38 kg
Designations Boundary Dimensions Basic Load Ratings Tolerance Class Limiting Speeds Mass
d
(mm)		 D
(mm)		 T,T3
(mm)		 T4
(mm)		 Ca
(N)		 C0a
(N)		 Grease
(min-1)		 Oil (Oil-bath)
(min-1)		 (approx.)
(kg)
53408U 40 90 38.2 42 103000 188000 ISO NORMAL CLASS 1700 2600 1.38

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Not to scale.
(*) The chamfer dimensions are minimum values.
For heavy load applications, ensure that the da value chosen is large enough to support the shaft washer rib.

CAD

© NSK Ltd.

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