FIELD: machine building.
SUBSTANCE: plain thrust bearing (1) consists of: first circular case (4) made of synthetic resin, second circular case (6) also made of synthetic resin and circular sliding element (7) corresponding to unit of plain thrust bearing; upper circular cover (10) and circular metal plate (15). Case (4) has upper circular surface (2) and external circular periphery surface (3) of cohesion. Case (6) is superposed on case (4), rotates around axis (O) of case (4) and has lower circular surface (5) opposite to surface (2) of case (4). The unit of the bearing is located between surface (2) of case (5) and surface (5) of case (6); also, lower surface (78) or upper surface (77) of the bearing unit are in sliding contact correspondingly with surface (2) of case (4) or surface (5) of case (6). Cover (10) has internal circular periphery surface of cohesion engaging surface (3) of case (4). Plate (15) is located between surface (11) of case (6) and lower surface (14) of cover (10) so, that its lower surface (12) contacts surface (11) of case (6), while its upper surface (13) contacts surface (14) of cover (10). Plate (15) has internal circular periphery surface (101), diametre of which is less, than internal diametres of internal periphery circular surfaces (21, 48, 61, 66 and 86) of cases (4; 6) and cover (10).
EFFECT: plain thrust bearing functioning as support for end of piston rod; simplification of setup attachment and reduced expenditures.
4 cl, 7 dwg
