The design of the escalator rotary chains is usually with rolling bearings. There are a lot of containment and dust generated between the chain and the guide rail during the operation.
Therefore, it induces damages to the rolling bearing and reduces the service life of the bearing and affects the performance.
The self-lubrication rotary chain provides maintenance free feature with anti-dust and anti-corrosion feature of the bearing material, the chain system can be free to operate under critical conditions.
