铁路客车轴承的发展方向是滾柱轴承。在我国的铁路客车中,目前有导框的转向架占很大比重。这种转向架几乎全部使用滑动轴承。把滑动轴承改为滾动轴承时,由于滾动轴承轴箱尺寸不同于滑动轴承轴箱尺寸,所以,原来的旧导框(图1)已用不上了。报 The development direction of railway passenger car bearings is roller bearing. In our country’s railway passenger cars, there are currently a large proportion of bogies with guide frames. Almost all of this bogies use plain bearings. When changing a plain bearing from a plain bearing to a plain bearing, the old lead frame (Fig. 1) can not be used since the size of the bearing of the rolling bearing is different from the size of the bearing of the plain bearing. Newspaper