Linear bearing is a low-cost linear motion system, which is used for infinite stroke and cylindrical shaft. Because the bearing ball is in point contact with the shaft, the service load is small. The steel ball rotates with minimal friction resistance, so as to obtain high-precision and stable motion. What if the linear bearing fails in use? Disassembly and inspection is a good method, but this method is time-consuming. It is a small method that can identify or predict whether the running bearing fails without disassembly and inspection.

直线轴承出现故障如何检查？

How to check if linear bearing fails?

金属直线轴承是一种以低成本生产的直线运动系统，用于无限行程与圆柱轴配合使用。由于承载球与轴呈点接触，故使用载荷小。钢球以极小的摩擦阻力旋转，从而能获得高精度的平稳运动。直线轴承在使用过程中出现故障了怎么办？拆卸检查固然是个好办法，但这种方法比较费时，不通过拆卸检查即可识别或预测运转中的轴承是否故障的小方法。

Metal linear bearing is a low-cost linear motion system, which is used for infinite stroke and cylindrical shaft. Because the bearing ball is in point contact with the shaft, the service load is small. The steel ball rotates with minimal friction resistance, so as to obtain high-precision and stable motion. What if the linear bearing fails in use? Disassembly and inspection is a good method, but this method is time-consuming. It is a small method that can identify or predict whether the running bearing fails without disassembly and inspection.

一、通过轴承润滑剂的状态进行识别

1、 Identification by the status of the bearing lubricant

，对润滑剂进行采样分析，通过其污浊程度是否混入异物或金属粉末等进行判断。此方法对不能靠近观察的轴承或大型轴承尤为有用。

Firstly, the lubricant is sampled and analyzed to judge whether its turbidity is mixed with foreign matters or metal powder. This method is particularly useful for bearings that cannot be close to observation or large bearings.

二、通过专人或听音器、听音棒进行轴承声音识别

2、 The bearing sound recognition shall be carried out by special personnel or listeners and sound sticks

通过声音进行识别需要有丰富的经验。必 须经过充分的训练达到能够识别直线轴承声音与非轴承声音。为此，应尽量由专人来进行这项工作。用听音器或听音棒贴在外壳上可清楚地听到直线轴承的声音。

Recognition by sound requires a wealth of experience. Must be fully trained to recognize linear bearing sound and non bearing sound. Therefore, special personnel should be assigned to carry out this work as far as possible. The sound of linear bearing can be clearly heard by sticking the listener or listening stick to the shell.

三、通过直线轴承的工作温度进行识别

3、 It is identified by the working temperature of linear bearing

该方法属比较识别法，于用在运转状态不太变化的场合。为此，必 须进行温度的连续记录。出现故障时，不仅温度升高，还会出现不规则变化。

This method belongs to the comparative identification method and is suitable for occasions where the running state does not change much. For this purpose, continuous temperature recording must be carried out. In case of failure, not only the temperature increases, but also irregular changes occur.