Bearing 7256 BM (SKF)

Angular contact ball bearings, single row 7256 BM

Bearing number : 7256 BM

Size (mm) : 280x500x80

Brand : SKF

Bore Diameter (mm) : 280

Outer Diameter (mm) : 500

Width (mm) : 80

Bearing dimensions and specification in SKF catalogue:

d - 280 mm

D - 500 mm

B - 80 mm

d₁ - - 367.7 mm

d₂ - - 328.07 mm

D₁ - - 417.7 mm

a - 204 mm

r_1,2 - min. - 5 mm

r_3,4 - min. - 2 mm

d_a - min. - 300 mm

D_a - max. - 480 mm

D_b - max. - 489 mm

r_a - max. - 4 mm

r_b - max. - 2 mm

Basic dynamic load rating - C - 507 kN

Basic static load rating - C₀ - 830 kN

Fatigue load limit - P_u - 17.6 kN

Reference speed - 1400 r/min

Limiting speed - 1400 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 - 67.5 kg

Designation

Bore Dia, mm

Outer Dia, mm: