GAS SUPPORT Russian patent published in 2011 - IPC F16C32/06 

FIELD: machine building.

SUBSTANCE: gas support consists of driven shaft (1) mounted in case (2) on two radial-thrust bearings made with conic surfaces of shaft (1) and enveloping them with conic surfaces of bushings (3, 5) divided between them with gas gap; also, gas support consists of system of lubrication supply. One bushing (3) is rigidly installed in case (2), while second bushing (5) is installed through control ring (6) and performs axial travels by means of shifting device actuating face surface of this bushing (5). On conic surfaces of shaft (1) there are made blind lengthwise grooves (25) of alternate depth increasing to ends of bearings. Also, second bushing (5) rests on sealed ball cassette (8) from the side of case (2). The shifting device is made as group of springs (11) of different rigidity.

EFFECT: maintaining constant thickness of gas gap thus increasing bearing capacity of support and reliability of operation.

2 cl, 1 dwg