SLIDING AXLE BEARING OF DOWNHOLE MOTOR Russian patent published in 2001 - IPC

FIELD: oil and gas producing industry, devices applicable in well drilling. SUBSTANCE: essence of invention consists in that working end faces of axles bearing disks have hard alloy protruding inserts located over friction circumference. In this case, minimal gap between then is less than insert lateral size on same circumference. Nonrotating disk is engageable with body through flexible member by means of, at least, three radial projections made on disk rear end and coming in contact with radial depressions on end faces of flexible member. EFFECT: higher operate reliability of axle bearing of down hole motor under conditions of highly abrasive media. 3 dwg