THREE-ROW SPHERICAL ROLLING BEARING Russian patent published in 2010 - IPC F16C19/22 F16C19/28 F16C33/34 

FIELD: machine building.

SUBSTANCE: rolling bearing consists of internal (4) and external (1) rings with rolling paths, and of rolling elements arranged between them and made as two-step rollers (2) and (3) installed in seats of separator. A bigger step of the roller with one section contact only the rolling path of ring (1), while a smaller one with two sections contacts only rolling paths of ring (4) with its two inclined sections and with a middle cylinder section at constant and the same velocity of rotation. Inclined and middle sections of rolling pats of ring (4) have grooves to form a gap with bigger steps of rollers (2) and (3); the latter are made of a barrel shape. The rolling path of ring (1) is spherical with centre on axis of ring rotation. Two sections of smaller steps of two end rows of rollers (2) are of a conic type; while two sections of smaller steps of rollers (3) of a middle row are of a cylinder type. All rollers (2) and (3) are installed in one separator (5); also a position of separator (5) is fixed with thrust spring rings (6) on external side on ring (4). Rollers (2) and (3) are arranged in rows in a staggered order. There is made knurl on surface of rolling elements, for example in form of contour of honey comb of 10 to 100 mcm depth to increase independent friction coefficient and as the indicator of wear.

EFFECT: facilitating operation at high rotation velocity, increased carrying capacity, service life and reliability of operation of bearing, reduced consumption of lubrication, reduced noise, and reduced elastic hysteresis in zone of big steps contact.

2 dwg