Self-aligning ball bearings

Tolerances: Normal, JS7
Radial internal clearance: table
Fits for standard conditions
Tolerances and resultant fits

Calculation

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1209 ETN9

Dimensions
d 45mm
D 85mm
B 19mm
d157.51mm
D172.5mm
r1,2min.1.1mm
Abutment dimensions
damin.52mm
Damax.78mm
ramax.1.1mm
Calculation data
Basic dynamic load ratingC 22.9kN
Basic static load ratingC0 7.8kN
Fatigue load limitPu 0.4kN
Reference speed  17000r/min
Limiting speed  11000r/min
Permissible angular misalignmentα 2.5°
Calculation factorkr 0.04 
Calculation factore 0.21 
Calculation factorY0 3.2 
Calculation factorY1 3 
Calculation factorY2 4.6 
Mass
Mass bearing  0.47kg

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