滑动轴承，在滑动摩擦下工作的轴承。滑动轴承工作平稳、可靠、无噪声。在液体润滑条件下，滑动表面被润滑油分开而不发生直接接触，还可以大大减小摩擦损失和表面磨损，油膜还具有一定的吸振能力。但起动摩擦阻力较大。轴被轴承支承的部分称为轴颈，与轴颈相配的零件称为轴瓦。一般用过比较小的机械设备中，转速较高的地方， 如电机，齿轮箱等等，滑动轴承应用场合一般在低速重载工况条件下，或者是维护保养及加注润滑油困难的运转部位， 如船舶的推进轴等。
Sliding bearing is used to work under sliding friction. The sliding bearing is stable, reliable and noise free. Under the condition of liquid lubrication, the sliding surface is separated by the lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced, and the oil film also has a certain absorption capacity. But the starting friction resistance is larger. The part supported by the shaft is called the journal, and the part matching the journal is called the bearing bush. Generally used in relatively small mechanical equipment, high speed, such as motor, gear box and so on, the application of sliding bearings in low speed heavy load conditions, or maintenance and injection of lubricating oil difficult operation parts, such as the propulsion shaft of the ship.
