TWO-STAGE RADIAL-STOP ROLLING BEARING WITH CONIC ROLLERS Russian patent published in 2010 - IPC F16C19/34 F16C19/55 F16C33/34 

FIELD: machine building.

SUBSTANCE: rolling bearing consists of external, middle and internal rings with rolling paths and of installed between them rolling elements - rollers. In an upper stage the rollers are of two-step type, while in a lower stage a standard roller is of a conic type installed in seats of a separator. A bigger step of the roller with one section contacts only the rolling path of external ring, while a smaller step of the roller with two sections contacts only rolling paths of the middle ring with its two inclined sections at constant and identical velocity of rotation. The rollers of the upper stage have a step-bearing made as a ball; while the roller of the lower stage has two step-bearings. The latter are arranged along rollers axes and contact high sideboards of the middle ring and one sideboard of the lower ring. At least one rolling path of the middle ring of the bearing has at least one groove to create a gap with the bigger step of the roller. Also angle between generatrix of the roller of the lower stage and generatrix of the bigger step of the roller of the upper stage is equal, for example from 18° to 30°, notably, radial runout of the bearing is, for example ± 2 mcm.

EFFECT: facilitating higher rotation velocity, pure rolling without slippage of rolling elements relative to rolling paths and operation with radial runout, reduced heating of bearing, reduced noise and increased service life.

2 dwg