ANTIFRICTION BEARING Russian patent published in 1997 - IPC

FIELD: mechanical engineering; antifriction bearings. SUBSTANCE: antifriction bearing contains two races with raceways and solids between them provided with coat having total thickness of 0.15 to 5.00 mk. Coat is double-layer; thickness of inner layer is no more than 1 mk. Inner layer is made from tin and/or lead; outer layer is made from brass or bronze; inner layer may be made from gallium or indium and outer layer may be made from copper or brass. Thickness of inner layer of double-layer coat may be no more than 4 mk. Outer layer of coat is made from titanium or zirconium or hafnium and inner coat is made from nitride and/or carbide and/or carbonitride of the same metal. Coat may be also made from compound containing fluorine and/or phosphorus and/or sulfur. EFFECT: enhanced working capacity of bearing. 4 cl, 1 dwg