Small turbines used for driving auxiliary equipment are usually lubricated using which method?

The method of lubrication typically used for small turbines that drive auxiliary equipment is ring-oiled bearings. This lubrication system involves a ring that distributes lubricating oil to the bearing surfaces. Ring-oiled bearings are effective for providing a consistent and adequate supply of oil, which is essential for reducing friction and wear, and ensuring smooth operation of the turbine.

This method is preferred in many applications due to its ability to maintain proper lubrication even under varying operational conditions. The design of ring-oiled bearings allows for automatic and continuous lubrication, which significantly reduces maintenance requirements compared to other methods. In contrast, grease nipples may require manual servicing, oil impregnated bushings are suitable for less demanding applications, and hand lubrication may not provide the same level of efficiency and reliability in an operational setting.