NRT650A SKF bearing

Axial-radial cylindrical roller bearings, super-precision NRT 650 A

Bearing number : NRT 650 A

Size (mm) : 650x870x122

Brand : SKF

Bore Diameter (mm) : 650

Outer Diameter (mm) : 870

Width (mm) : 122

Bearing dimensions and specification in SKF catalogue:

d - 650 mm

D - 870 mm

H - 122 mm

d₁ - 800 mm

C - 34 mm

H₁ - 78 mm

J - 680 mm

J₁ - 830 mm

H - 14 mm

N₁ - 20 mm

N₂ - 14 mm

a - 13 mm

r₁ - min. - 1 mm

r₂ - min. - 1 mm

Basic dynamic load rating, radial direction - C - 413 kN

Basic static load rating, radial direction - C₀ - 1600 kN

Basic dynamic load rating, axial direction - C - 365 kN

Basic static load rating, axial direction - C₀ - 5000 kN

Limiting speed for grease lubrication - 55 r/min

Limiting speed for oil lubrication - 110 mm/min

Axial Preload - 27 N

Axial unloading force - 59 kN

Frictional moment - C_RL - 200 N·m

axial stiffness - 60 N/micron

radial stiffness - 17.2 N/micron

Moment stiffness - 3209000 kN·m/mrad

Mass bearing - 170 kg

Guideline diameter - 1450 mm

Size - G - M12

Number of bolts - 6

Angle between bolts - 60 °

Size bolts - M12

Pitch - &alfa; - 7.5 °

Number of bolts - 42

Number of bolts omitted at removal thread position - 6, 60° apart

Size bolts - M12

Pitch - &alfa; - 7.5 °

Number of bolts - 46

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

Tightening torque - 116 N·m

Size - M12

Number of bolts - 2