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53218U

Single-Direction Thrust Ball Bearings
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Images shown are representations. Designs and specifications may differ from actual products.
Parts Number
53218U Single-Direction Thrust Ball Bearings
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Display units

Parts Number

53218U

Boundary Dimensions

d 90 mm Bore diameter
D 135 mm Outside diameter
T,T3 38.5 mm Height
T4 42 mm Height bearing include seat washer
r (min.) 1.1 mm Chamfer dimension

Basic Load Ratings

Ca 114000 N Basic dynamic load rating
C0a 310000 N Basic static load rating

Speeds

Grease 1400 min-1 Grease lubrication
Oil (Oil-bath) 2200 min-1 Oil-bath lubrication

Dimensions

A 45 mm Centre height housing washer sphere
R 100 mm Radius sphered housing washer
b 13.5 mm Height sphered housing washer
D2 110 mm Inner diameter sphered seat washer
d1 135 mm Outside diameter shaft washer
D3 140 mm Outside diameter sphered housing washer
D1 93 mm Inner diameter housing washer

Abutment and Fillet Dimensions

da (min.) 117 mm Diameter of shaft abutment
Da (max.) 108 mm Diameter of housing abutment
ra (max.) 1 mm Radius of shaft or housing fillet

Mass

(approx.) 2.38 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)
53218U 90 135 38.5 42 114000 310000 ISO NORMAL CLASS 1400 2200 2.38

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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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