In a lifting machinery, there are many parts that occupy a very important role. We are familiar with bearings, wheel groups, couplings, hook groups, etc. However, what is easily overlooked is the brake, which is actually one of the very important roles. Without it, it is difficult for the equipment to stop normally. Let's take a look at it now. Brakes are not only used in lifting equipment, but also play a very important role in port loading and unloading, construction machinery, etc. However, some problems may also arise during use, which may affect its normal use. A common occurrence is brake failure. Let's take a look at the reasons for this situation. There are many reasons for this phenomenon. This situation is prone to occur when the hydraulic oil inside the brake master cylinder is lacking. In addition, when the leather ring experiences aging, deformation, or blockage of the compensation hole, braking failure may also occur. This can happen when the brake shoe is worn due to long-term use, air enters the brake system, the brake gap is too large, and the system temperature is too high.