13.85m! Luo Shaft once again set a new record for the largest integral turntable bearing in China, domestic bearings gradually break through the “stuck neck” problem

Bearing steel, known as the "king of steel", is also the steel "joints" of bearings, widely used in wind engines, shield machines, high-speed rail, aircraft, etc., is one of the most difficult to produce, the most stringent product quality requirements, the most inspection items of special steel, once by It has been monopolised by developed countries for a long time.