Normally, the range of slewing bearings used on tunnel boring machines is between 2.5 and 6 meters in outer diameter, such bearings operate in harsh conditions-dirty, corrosive environments with heavy loads and short life expectancy.

LYJW is a leader in the manufacturers of large size slewing bearings, based on Luoyang in China which designs and manufactures a large variety of ball and roller slewing ring bearings with diameters range from200mm to 6500mm in many applications that require long operating life under demanding conditions. The slewing bearings are widely used as components in wind energy turbines, harbor cranes, ship deck cranes, truck cranes, construction cranes, bulk materials handlings, port machinery, ladle turret or Ferris wheels etc.