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size
d 20mm
D 47mm
B 14mm
C 16.2mm
d1≈28.8mm
D1≈42mm
D2≈40.59mm
r1,2min.1mm
Size shoulder size
damin.25.6mm
damax.28.8mm
dbmin.25.6mm
dbmax.28.5mm
Damax.41.4mm
ramax.1mm
data calculation
Basic dynamic load ratingC 13.5kN
Basic rated static loadC0 6.55kN
Fatigue load limitPu 0.28kN
Maximum speed  9300r/min
coefficientkr 0.025 
coefficientf0 13 
weight
Bearing weight  0.11kg
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