Failure forms and causes of crane pulley

 Crane pulley is an important part of crane and plays an important role in lifting goods. Sometimes, the crane pulley often fails due to long service time or poor service environment. Then, what are the failure forms of crane pulley and why? Let’s take a look Crane for sale.

Failure mode of crane pulley

The common failure forms of crane pulley mainly include the following aspects:

1. Wear failure is a common failure form of crane pulley, which is mainly the wear between crane pulley and steel wire rope.
2.  Corrosion failure often occurs on crane pulleys with poor working environment, or in some coastal cities.
3.  Overload failure.
4.  High temperature and low temperature failures mostly occur in winter and summer, mainly for crane pulleys working outdoors.

Failure causes of crane pulley

The main causes of crane pulley failure are as follows:

1.  Wear is one of the main reasons and there are many situations.
2. During the long-term use of the crane pulley, it often slides or rolls relative to the steel wire rope, resulting in friction and wear of the grinding wheel groove. Moreover, slight shaking will occur when lifting goods, which will swing the steel wire rope and pulley to a certain extent, aggravate wear and even deform the pulley.
3.  The reason for corrosion failure is that the working environment of some crane pulleys is poor, such as the one on the garbage crane. The air composition of the working environment is complex, and sometimes it will have chemical interaction with the crane pulley to produce chemical corrosion. In some coastal cities, ports or humid areas, crane pulleys will undergo electrochemical corrosion with moisture in relatively humid air, gradually damaging crane pulleys, especially cast iron pulleys.
4.  If the crane is overloaded, it will produce a very large instantaneous force when lifting goods. If it exceeds the limit of the bearing capacity of the crane pulley, it will be deformed, cracked, or even directly damaged. The steel wire rope will jump out and the goods will fall off, resulting in safety accidents.
5.  If the temperature is too high or too low, it often occurs in low temperature in winter and sunshine exposure in summer, or in special workshops, the overall performance, brittleness and wear resistance of crane pulley are reduced.