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Four Point Contact Ball Bearings (metric)

QJ288MPA

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Details

Main dimensions
d [mm]	440
D [mm]	790
B [mm]	112
d₁ [mm]	≈ 574.8
D₁ [mm]	≈ 655.2
r_1,2 [mm]	7.5
α₀ [°]	35
a [mm]	≈ 431
Weight [kg]	≈ 274

Mating dimensions
d_{a, min} [mm]	472
D_{a, max} [mm]	758
r_{a, max} [mm]	6

Calculation data
C [kN]	1350
C₀ [kN]	3600
C_u [kN]	72.8
n_th [min^-1]	554
n_g [min^-1]	1200