What is a good turbine bearings

Playing an important role, turbine bearings is to provide support to the gas turbine rotor. These bearings ensure radial support from journal bearings and axial support from thrust bearings. Usually, the compressor bearings are put centrally in the compressor inlet casing and fastened with bolts.

Turbine engine bearings and seals are very important parts responsible for supporting the main engine rotor. The quantity of bearings required for optimal engine support is primarily required by the rotor's length and weight, which in turn are affected by the type of compressor in the engine. Engines equipped with a two-spool compressor setup typically necessitate more extensive bearing support. At a minimum, one shaft requires a deep groove ball bearing to handling both thrust and radial loads, in addition to a straight roller bearing to manage radial loads exclusively. In addition, roller bearings may be used if the shaft experiences vibration or is exceptionally long. Gas turbine rotors are typically equipmented by antifriction bearings, with both ball and roller bearings. Some new design engines utilize hydraulic bearings, where an external race is enveloped in a oil film to minimize engine-transmitted vibrations.

With many advantages, antifriction bearings are favored: they provide minimal rotational resistance, facilitate accurate alignment of rotating parts, are cost-effective and easily replace, can withstand momentary overloads, are simple to cool, lubricate, and maintain, handle both radial and axial loads, and maintain durability to let temperatures down.

The turbine bearing's main function is to support to the turbine rotor structure. It contains upper and lower shells equipped with a babbit face, and receives lubricating oil from both sides of these shells.