Bearing QJ 311 N2MA (SKF)

Angular contact ball bearings, four-point contact ball bearings QJ 311 N2MA

Bearing number : QJ 311 N2MA

Size (mm) : 55x120x29

Brand : SKF

Bore Diameter (mm) : 55

Outer Diameter (mm) : 120

Width (mm) : 29

Bearing dimensions and specification in SKF catalogue:

d - 55 mm

D - 120 mm

B - 29 mm

d₁ - - 70.5 mm

D₁ - - 97.8 mm

a - 61 mm

h - 8.1 mm

b - 6.5 mm

r₀ - 1 mm

r_1,2 - min. - 2 mm

d_a - min. - 66 mm

D_a - max. - 109 mm

r_a - max. - 2 mm

Basic dynamic load rating - C - 137 kN

Basic static load rating - C₀ - 118 kN

Fatigue load limit - P_u - 5 kN

Reference speed - 7000 r/min

Limiting speed - 10000 r/min

Calculation factor - k_a - 1.1

Calculation factor - e - 0.95

Calculation factor - X - 0.6

Calculation factor - Y₀ - 0.58

Calculation factor - Y₁ - 0.66

Calculation factor - Y₂ - 1.07

Mass bearing - 1.75 kg

Designation

Bore Dia, mm

Outer Dia, mm: