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Four Point Contact Ball Bearings (metric)

Q228MPB

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Details

Main dimensions
d [mm]	140
D [mm]	250
B [mm]	42
d₁ [mm]	≈ 179.5
D₁ [mm]	≈ 210.5
r_1,2 [mm]	3
α₀ [°]	23
a [mm]	≈ 83
Weight [kg]	≈ 10.1

Mating dimensions
d_{a, min} [mm]	154
D_{a, max} [mm]	236
r_{a, max} [mm]	2.5

Calculation data
C [kN]	367
C₀ [kN]	478
C_u [kN]	16.8
n_th [min^-1]	2475
n_g [min^-1]	4400