Three new standards introduced wind turbine bearings

   Wind turbine bearings can be roughly divided into three categories, namely: yaw bearings, pitch bearings, transmission bearings (main shaft and gearbox bearings). Yaw bearing mounted on a tower and a connecting portion cockpit, the pitch bearing mounted on the root of each blade connected to the hub portion. Each wind turbine equipment with a yaw bearing and three pitch bearing (part-megawatt wind turbines for the following non-adjustable blade, can not pitch bearing).
A code method
  Wind turbine yaw, pitch bearing code method employs JB/T10471-2004 turntable bearing the code in the method, but in the wind turbine yaw, pitch bearings appeared double four point contact ball slewing bearing, and this structure bearing the code is not provided in JB/T10471-2004, therefore, increase the standard double four-point contact ball slewing Precision bearing the code. Since single-row four point contact ball slewing bearing structure type code with 01 that, while the structure type code 02 indicates the double ball slewing bearing structure, provides 03 indicate double four point contact ball slewing bearing structure.