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Bearing NRT 260 B (SKF)

Axial-radial cylindrical roller bearings, super-precision NRT 260 B

Bearing number : NRT 260 B

Size (mm) : 260x385x55

Brand : SKF

Bore Diameter (mm) : 260

Outer Diameter (mm) : 385

Width (mm) : 55

Bearing dimensions and specification in SKF catalogue:

d - 260 mm

D - 385 mm

H - 55 mm

d₁ - 345 mm

C - 18 mm

H₁ - 36.5 mm

J - 280 mm

J₁ - 365 mm

H - 9.3 mm

N₁ - 15 mm

N₂ - 9.3 mm

a - 8.2 mm

r₁ - min. - 0.6 mm

r₂ - min. - 0.6 mm

Basic dynamic load rating, radial direction - C - 108 kN

Basic static load rating, radial direction - C₀ - 355 kN

Basic dynamic load rating, axial direction - C - 95 kN

Basic static load rating, axial direction - C₀ - 780 kN

Limiting speed for grease lubrication - 130 r/min

Limiting speed for oil lubrication - 260 mm/min

Axial Preload - 7.3 N

Axial unloading force - 16 kN

Frictional moment - C_RL - 25 N·m

axial stiffness - 14.7 N/micron

radial stiffness - 8.3 N/micron

Moment stiffness - 153000 kN·m/mrad

Mass bearing - 18.2 kg

Guideline diameter - 630 mm

Size - G - M12

Number of bolts - 3

Angle between bolts - 120 °

Size bolts - M8

Pitch - &alfa; - 10 °

Number of bolts - 33

Number of bolts omitted at removal thread position - 3, 120° apart

Size bolts - M8

Pitch - &alfa; - 10 °

Number of bolts - 34

Number of bolts omitted at retaining bolts position - 2, 180° apart

Tightening torque - 34 N·m

Size - M8

Number of bolts - 2

Tags :  SKF , 260x385x55