Hydrostatic supported roller bearing e.g. grooved ball bearing, for bearing e.g. main shaft in high rotating gas turbine, has monitoring device arranged at supply system to monitor pressure of hydrostatic medium in multiple cavities

摘要

The bearing has multiple cavities arranged in a hydrostatic contact zone along a circumferential direction, where the contact zone is formed between a housing (9) and a roller bearing outer ring (1). The cavities are supplied with hydrostatic medium via a supply system. A monitoring device is arranged at the system to monitor pressure of medium. The cavities are designed as oil pockets (20), and extend over a circumferential angle. The medium is gas or fluid-type lubricant i.e. oil. The device is designed as a fast responding hydraulic or pneumatic pressure sensors (5) or piezo sensors. An independent claim is also included for a method for monitoring condition of a roller bearing that is hydrostatically supported in a housing.