Gearbox bearings offer improved wear life under challenging conditions

摘要

A gearbox on a wind turbine has to last as long as 15 to 25 years, and this puts considerable strain on bearing manufacturers to assure long life. Conditions in many other gearbox applications are just as challenging, with bearings subjected to elevated operating temperatures, high loads and operating speeds, severe ambient conditions and lubricant that may be contaminated. NSK has conducted an evaluation of all current gear designs - worm, hypoid bevel, epicyclics, spur and bevel types. This has involved studying the numerous factors that affect bearing performance in gearboxes - factors such as load, speed, friction, environment, shaft arrangements, lubrication, assembly space, and many more. The result is a unique 'solutions-based' technology approach built upon advanced materials technology, optimised mechanical design and life calculation software.