Bearing 7228 BM (SKF)

Angular contact ball bearings, single row 7228 BM

Bearing number : 7228 BM

Size (mm) : 140x250x42

Brand : SKF

Bore Diameter (mm) : 140

Outer Diameter (mm) : 250

Width (mm) : 42

Bearing dimensions and specification in SKF catalogue:

d - 140 mm

D - 250 mm

B - 42 mm

d₁ - - 183.3 mm

d₂ - - 163.6 mm

D₁ - - 209.55 mm

a - 103 mm

r_1,2 - min. - 3 mm

r_3,4 - min. - 1.1 mm

d_a - min. - 154 mm

D_a - max. - 236 mm

D_b - max. - 243 mm

r_a - max. - 2.5 mm

r_b - max. - 1 mm

Basic dynamic load rating - C - 199 kN

Basic static load rating - C₀ - 212 kN

Fatigue load limit - P_u - 6.4 kN

Reference speed - 3000 r/min

Limiting speed - 3000 r/min

Calculation factor - k_r - 0.08

Calculation factor - k_a - 1.2

Calculation factor - e - 1.14

Calculation factor - X - 0.57

Calculation factor - Y₀ - 0.52

Calculation factor - Y₁ - 0.55

Calculation factor - Y₂ - 0.93

Calculation factor - X - 0.35

Calculation factor - Y₀ - 0.26

Calculation factor - Y₁ -

Calculation factor - Y₂ - 0.57

Mass bearing - 8.85 kg

Designation

Bore Dia, mm

Outer Dia, mm: