BEARING LIQUID FRICTION FOR ROLLING-MILL ROLLERS Russian patent published in 2017 - IPC B21B31/02 

FIELD: machine engineering.

SUBSTANCE: bearing contains a liner insert consisting of a steel body whose internal surface is coated with an antifriction layer and has an internal boring of the working zones along this layer in the form of two cylindrical bores made of centers displaced from the center of the outer surface of the insert liner, oil supply pockets of the cylindrical forms made of displaced centers relative to the center of the liner-liner, conjugation of the cylindrical surfaces of the working boring of the liner-bushing and boring of the pocket, bushing-pin, front and back cover. The coverage angle of the working area of the insert liner is 150-160°, the conjugation of the cylindrical surfaces of the working boring of the insert liner and the boring of the pockets are made in the form of two transitional cylindrical bores, the first of which forms with the second angle no more than 1.5-2°, and the second transitional bore forms with the working bore an angle of transition of not more than 1°. The lengths of transitional boring and boring pockets, displacement of the centers of working bores relative to the geometric center of the bearing are regulated.

EFFECT: increasing the lifting capacity by increasing the working area coverage angle and reducing the relative clearance in the bearing, maintaining normal heat transfer during operation under load, and creating favorable conditions for the formation of the oil wedge.

9 dwg