Self-aligning ball bearings

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

Calculation

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1204 ETN9

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Dimensions
d 20mm
D 47mm
B 14mm
d128.88mm
D140mm
r1,2min.1mm
Abutment dimensions
damin.25.6mm
Damax.41.4mm
ramax.1mm
Calculation data
Basic dynamic load ratingC 12.7kN
Basic static load ratingC0 3.4kN
Fatigue load limitPu 0.18kN
Reference speed  32000r/min
Limiting speed  20000r/min
Permissible angular misalignmentα 2.5°
Calculation factorkr 0.04 
Calculation factore 0.3 
Calculation factorY0 2.2 
Calculation factorY1 2.1 
Calculation factorY2 3.3 
Mass
Mass bearing  0.12kg
Designation bearing  1204 ETN9

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