| abstract |
In axial-piston, hydraulic pumps and motors, the thrust loadings of the pistons on their bearing supports vary proportionally to pressures in the unit and also circumferentially around the bearing supports. By employing hydrostatic button bearings pressurized in ''''sets'''' around the bearing support with at least one set pressurized with the unit''s inlet pressure and another ''''set'''' pressurized by the unit''s outlet pressure, improved bearing performance is achieved. Also, certain surface configuration forming the sills and recesses of the individual buttons can enhance bearing performance. |