精品视频亚洲一区二区,狠狠狠一区二区三区熟,尹在国产香蕉在线视频,在车里被撞了八次高黄

價 格：2000

單排四點接觸球式回轉(zhuǎn)支承由兩個座圈組成，鑫達結(jié)構(gòu)緊湊，內(nèi)齒重量輕，回轉(zhuǎn)鋼球與圓弧滾道四點接觸，支承能同時承受軸向力，鑫達徑向力和傾翻力矩，內(nèi)齒回轉(zhuǎn)式輸送機，回轉(zhuǎn)焊接操作機，支承中小型起重機和挖掘機等工程機械均可選用。鑫達

The內(nèi)齒 single-row four points contact ball Slewing Bearing is composed of 2 seat-rings.It features compact in design,and light in weight.The balls contact with the circular race at four points,via which the axial force,radial force and resultant moment may be born simultaneously.

It may be used for slewing conveyors,welding arms and positioners,light,medium duty cranes,excavators and other engineering machines.