Experimental study on energy saving and life extension of heavy-duty bearings

REN Ning1, JIANG Zhi-jie2, ZHANG Bin2, HUANG Hai-jun2, CHENG Wei1, LI Xiao-ming2, CHEN Fang-hua2
（1.Zhejiang Testing and Inspection Institute for Mechanicaland Electrical Products Quality, Hangzhou 310051,China;
2.Zhejiang Institute of Mechanical & Electrical Engineering Co.,Ltd., Hangzhou 310022, China）

Abstract: Aiming at the problems of easy wear and short service life of heavydutybearings,the operationcondition of the wind turbine generator bearing in the heavyduty bearing was researched. A new method was proposed to improve the wear and prolong the service life of heavy-duty bearing by adding Nano-diamond ceramic to the grease. Based on BLT-L3 large bearing life testing machine and the actual working condition of heavy-duty bearing, the driving energy consumption and running time of heavy-duty bearings in the test were studied and analyzed by the life comparison test that adding base grease and porcelain alloy grease into the heavy-duty bearing.The result shows that Nano-diamond ceramics can effectively reduce the driving energy consumption of the heavy-duty bearing, at the same time, it can greatly extend the service life of the heavy-duty bearing, which is of reference significance for improving the service life and reducing the driving energy consumption of the domestic heavy-duty bearing.
Key words: heavy-duty bearing; service life; comparison test; nano-diamond ceramics