Ressource KRW Product

Four Point Contact Ball Bearings (metric)

Q284MPB

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Details

Main dimensions
d [mm] 420
D [mm] 760
B [mm] 109
d1 [mm] ≈ 549.8
D1 [mm] ≈ 630.2
r1,2 [mm] 7.5
α0 [°] 23
a [mm] ≈ 250
Weight [kg] ≈ 249
Mating dimensions
da, min [mm] 452
Da, max [mm] 728
ra, max [mm] 6
Calculation data
C [kN] 1470
C0 [kN] 3730
Cu [kN] 77.1
nth [min-1] 550
ng [min-1] 1300