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.

直線軸承出現故障如何檢查？

How to check if linear bearing fails?

金屬直線軸承是一種以低成本生產的直線運動系統，用于無限行程與圓柱軸配合使用。由于承載球與軸呈點接觸，故使用載荷小。鋼球以極小的摩擦阻力旋轉，從而能獲得高精度的平穩運動。直線軸承在使用過程中出現故障了怎么辦？拆卸檢查固然是個好辦法，但這種方法比較費時，不通過拆卸檢查即可識別或預測運轉中的軸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、通過軸承潤滑劑的狀態進行識別

1、 Identification by the status of the bearing lubricant

，對潤滑劑進行采樣分析，通過其污濁程度是否混入異物或金屬粉末等進行判斷。此方法對不能靠近觀察的軸承或大型軸承尤為有用。

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、通過專人或聽音器、聽音棒進行軸承聲音識別

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

通過聲音進行識別需要有豐富的經驗。必 須經過充分的訓練達到能夠識別直線軸承聲音與非軸承聲音。為此，應盡量由專人來進行這項工作。用聽音器或聽音棒貼在外殼上可清楚地聽到直線軸承的聲音。

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、通過直線軸承的工作溫度進行識別

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

該方法屬比較識別法，于用在運轉狀態不太變化的場合。為此，必 須進行溫度的連續記錄。出現故障時，不僅溫度升高，還會出現不規則變化。

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.