The function of the GDM326 friction pulley liner in the entire lifting system is to ensure the coefficient of friction and protect the wire rope. When choosing a cushion, we have to choose based on these two functions. According to wear-related theories, when two objects of different hardness move relative to each other, the wear of the object with less hardness is greater than that of the object with greater hardness. In other words, the liner must be worn to effectively protect the hard wire rope during the operation of the hoist.

From a macro perspective, under the premise of ensuring the support strength, the softer the GDM326 friction pulley liner material, the more beneficial it is to the wire rope. From a microscopic point of view, there should be no hard spots in our liner materials. If the entire liner material is too hard, it will cause wear and tear on the entire wire rope.

In actual industrial and mining work, we have summed up the theory of "damaging protection". In the industrial and mining investigation, we found that some users in the normal lifting, only one of the four liner rope grooves will be damaged by pitting, peeling, excessive wear and other rope grooves, but the other rope grooves are completely normal.

According to industrial and mining experience, it is not difficult for us to infer that the operation of the wire rope has already experienced uneven forces. Now that the problem is found, the next step is to adjust, improve, and protect the wire rope. Therefore, we can “Loss protection” is defined as follows:

According to the GDM326 friction pulley liner condition, we find the problems that occur during the operation of the wire rope, and formulate corresponding countermeasures based on the situation, so as to ensure the scientific use of the wire rope. This is the damage protection function of the friction lining during the operation.