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1218

Self-Aligning Ball Bearings
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Images shown are representations. Designs and specifications may differ from actual products.
Parts Number Qty
1218 Self-Aligning Ball Bearings
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Parts Number

1218

Boundary Dimensions

d 90 mm Bore diameter
D 160 mm Outside diameter
B 30 mm Width
r (min.) 2 mm Chamfer dimension

Basic Load Ratings

Cr 63000 N Basic dynamic load rating
C0r 23500 N Basic static load rating

Speeds

Grease 3600 min-1 Grease lubrication
Oil (Oil-bath) 4300 min-1 Oil-bath lubrication

Abutment and Fillet Dimensions

da (min.) 99 mm Diameter of shaft abutment
Da (max.) 151 mm Diameter of housing abutment
ra (max.) 2 mm Radius of shaft or housing fillet

Calculation factors

e 0.17 Constant
Y2 5.8 Axial load Factors
Y3 3.8 Axial load Factors
Y0 3.9 Axial load Factors

Mass

(approx.) 2.5 kg

Properties

Design ( ): Cylindrical bore
Cage ( ): Pressed steel cage
Radial Internal Clearance CN
Tolerance ISO NORMAL CLASS
Designations Boundary Dimensions Basic Load Ratings Radial Internal Clearance Tolerance Class Limiting Speeds Mass
d
(mm)		 D
(mm)		 B
(mm)		 Cr
(N)		 C0r
(N)		 min
 max
 Grease
(min-1)		 Oil (Oil-bath)
(min-1)		 (approx.)
(kg)
1218 90 160 30 63000 23500 ISO NORMAL CLASS 3600 4300 2.5

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Not to scale.
(*) The chamfer dimensions are minimum values.
Suffix K represents bearings with tapered bores (taper 1:12).

CAD
More Information
NSK Product Type2 SABB_SA
NSK Product Type Bearing
Designations 1218

© NSK Ltd.

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