PROCEDURE FOR HYDRAULIC FORGING AND HYDRAULIC FORGING BUILDING-UP FRONT AND BACK BEARING RINGS WITH JOURNAL OF AXLE OF WHEEL PAIR Russian patent published in 2011 - IPC B23P19/02 B23P11/02 B61K5/00 B60B29/00 

FIELD: machine building.

SUBSTANCE: device consists of piston-rod, of split bushing with clip connection for securing it on collar of ring of back bearing, of two cone bushings, of main case, of auxiliary case and of mechanical part for axial transfer of back and front rings of bearings relative to journal of axle of wheel pair. The piston-rod is hollow and is positioned inside the main case. The auxiliary case is set coaxially with the main case and is made in form of a stepped thick-wall ring with two opposite internal conic surfaces and with oil supplying channels in its wall. The main case is made in form of a two-stepped cylinder cartridge with the central orifice in its bottom and oil duct with shut off valve in its walls. One conic bushing is secured in the main case and interacts with one internal conic surface of the auxiliary case. Another conic bushing is fixed in the auxiliary case and contacts the second conic surface of the auxiliary case.

EFFECT: expanded functionality, raised reliability and increased efficiency of device.

2 cl, 2 dwg