; Characterized by the upper portion of the outer ring of the bearing structure of a plurality of outer boss, the boss as a dedicated outer thermal loading position to achieve the purpose of reducing the noise of the compressor. Qingdao Berg air compressor. 2. Thrust bearing thrust disk causes of fever finish is not enough; the bearing surface line speed is too high;. Berg air compressor Qingdao Xingchang Pneumatic Machinery (FIG), the best Berg air compressor, air compressor provided by Berg Xingchang Pneumatic Machinery Co., Ltd Qingdao. Qingdao Xingchang Pneumatic Machinery Co., Ltd. (www.xckyj.com) located in Chengyang District, Qingdao, Chongqing Road 77. Scraps and development in the wave of market economy, the current Xingchang pneumatic machinery has a high profile in the industry and special equipment, and enjoys a good reputation. Xingchang Pneumatic Machinery acquired the whole network business alliance certification, marking our service and management level has reached a new height. Xingchang Pneumatic Machinery staff is willing to joint development with all people a better future.