Bearing 309 NR (SKF)

Deep groove ball bearings, single row, with filling slots 309 NR

Bearing number : 309 NR

Size (mm) : 45x100x25

Brand : SKF

Bore Diameter (mm) : 45

Outer Diameter (mm) : 100

Width (mm) : 25

Bearing dimensions and specification in SKF catalogue:

d - 45 mm

D - 100 mm

B - 25 mm

d₁ - - 62.18 mm

D₂ - - 86.7 mm

D₃ - 96.8 mm

D₄ - 106.5 mm

b - 2.7 mm

C - 3.28 mm

f - 2.46 mm

r₀ - 0.6 mm

r_1,2 - min. - 1.5 mm

d_a - min. - 54 mm

D_a - max. - 91 mm

D_b - min. - 108 mm

b_a - min. - 3 mm

C_a - max. - 5.74 mm

r_a - max. - 1.5 mm

Basic dynamic load rating - C - 55 kN

Basic static load rating - C₀ - 44 kN

Fatigue load limit - P_u - 1.9 kN

Reference speed - 13000 r/min

Limiting speed - 7500 r/min

Calculation factor minimum radial load - k_r - 0.05

Mass bearing - 0.88 kg

Snap ring - SP 100

Designation

Bore Dia, mm

Outer Dia, mm: