目前铁道车辆用的轴承分两大类:滑动轴承和滚动轴承。货车大多使用滑动轴承,客车大多使用滚动轴承。在旅客快车上几乎已全部安装滚动轴承,慢车还有相当数量的滑动轴承。随着国民经济的发展,旅客列车的 At present, there are two types of bearings for railway vehicles: plain bearings and rolling bearings. Most trucks use plain bearings, most of the use of rolling bearings. Roller bearings are almost always installed on passenger express trains, and there are a fair amount of plain bearings on local trains. With the development of national economy, passenger trains