Bearing QJ 1248 MA/344524 (SKF)

Angular contact ball bearings, four-point contact ball bearings QJ 1248 MA/344524

Bearing number : QJ 1248 MA/344524

Size (mm) : 240x440x85

Brand : SKF

Bore Diameter (mm) : 240

Outer Diameter (mm) : 440

Width (mm) : 85

Bearing dimensions and specification in SKF catalogue:

d - 240 mm

D - 440 mm

B - 85 mm

d₁ - - 316 mm

D₁ - - 364 mm

a - 340 mm

r_1,2 - min. - 4 mm

d_a - min. - 258 mm

D_a - max. - 422 mm

r_a - max. - 3 mm

Basic dynamic load rating - C - 663 kN

Basic static load rating - C₀ - 1220 kN

Fatigue load limit - P_u - 28 kN

Reference speed - 1500 r/min

Limiting speed - 2400 r/min

Calculation factor - k_a - 0.9

Calculation factor - e - 1.34

Calculation factor - X - 0.54

Calculation factor - Y₀ - 0.44

Calculation factor - Y₁ - 0.47

Calculation factor - Y₂ - 0.81

Mass bearing - 61 kg

Designation

Bore Dia, mm

Outer Dia, mm: