What is the purpose of cleaning and oiling a watch movement?

　　What we commonly refer to as oiling and cleaning involves washing the watch movement and applying lubricating oil, which is an essential task in watch repair and maintenance. So, what exactly is the purpose of cleaning and oiling a watch movement? I believe not everyone knows this, so today Xiao Ya will explain the role of watch movement cleaning and oiling.

　　The function of watch movement cleaning and oiling

　　The purpose of cleaning and oiling is to keep the watch components clean and provide necessary lubrication for the parts, thereby ensuring the precision of the watch mechanism, improving timekeeping accuracy, and prolonging the service life of the watch.

　　Under what circumstances does a watch need cleaning and oiling?

　　Under normal circumstances, a watch movement generally needs to be cleaned and oiled once every two years. Ordinarily, the cleaning and oiling process is often carried out simultaneously with the adjustment and repair or replacement of parts. At the same time, if the watch exhibits any of the following conditions, it also requires cleaning and oiling.

　　1. The lubricating oil inside the movement has dried up or become sticky. This increases the resistance of moving parts, causing the watch to keep time inaccurately;

　　2. There is too much lubricating oil inside the watch mechanism. This causes the oil to spill over everywhere and contaminate components, particularly the escapement and regulating mechanism, thereby causing the watch to stop or become noticeably inaccurate;

　　3. Foreign matter enters the movement, such as dust particles, metal fragments, fine fibres, etc. This can obstruct the movement's transmission mechanism, causing inaccurate timekeeping or even stopping the watch;

　　4. Rusting of components. This is caused by the user lacking basic knowledge of watch protection, the influence of the operating environment (such as underwater or high-altitude work), and poor case sealing performance, which will cause the watch to keep time abnormally or stop.

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