滚子

Apply the wallpaper paste with a roller.

来涂墙纸的糨糊。

Using biserial roller axletree with centripetal spherical support of the host axletree can reduce energy consumption by 30%.

主轴承受双列向心还球面轴承，可降低能耗30%。

In general,the cylindrical roller bearings, belonging to axial discerptible bearing,are suitable only for sustaining radial loads.The contact of roller with race is linear.

圆柱轴承一于承受向负荷，套圈道为线性接触，属轴向可分离型轴承。