Bearing QJ 1244 N2MA (SKF)

Angular contact ball bearings, four-point contact ball bearings QJ 1244 N2MA

Bearing number : QJ 1244 N2MA

Size (mm) : 220x400x78

Brand : SKF

Bore Diameter (mm) : 220

Outer Diameter (mm) : 400

Width (mm) : 78

Bearing dimensions and specification in SKF catalogue:

d - 220 mm

D - 400 mm

B - 78 mm

d₁ - - 287 mm

D₁ - - 333 mm

a - 310 mm

h - 12.7 mm

b - 10.55 mm

r₀ - 2 mm

r_1,2 - min. - 4 mm

d_a - min. - 238 mm

D_a - max. - 382 mm

r_a - max. - 3 mm

Basic dynamic load rating - C - 364 kN

Basic static load rating - C₀ - 1020 kN

Fatigue load limit - P_u - 24.5 kN

Reference speed - 1800 r/min

Limiting speed - 1800 r/min

Calculation factor - k_a - 0.9

Calculation factor - e - 1.34

Calculation factor - X - 0.33

Calculation factor - Y₀ - 0.44

Calculation factor - Y₁ - 0.47

Calculation factor - Y₂ - 0.81

Mass bearing - 45.5 kg

Designation

Bore Dia, mm

Outer Dia, mm: