Oil leakage from the turntable of the Zoomlion excavator, how to repair the oil leakage of the middl

Due to the particularity of its structure and the diversity of on-site conditions, the slewing bearing of the excavator is prone to the failure of slewing bearing, slewing ring gear or slewing motor damage due to oil leakage, so the leakage should be prevented and dealt with in time.

The specific inspection steps and methods are as follows:

1. Whether the maintenance is correct.

The grease filling cycle of the slewing bearing cavity should be between 150 and 250h.

2. Whether the hydraulic oil or gear oil of the rotary motor is channeled into the cavity of the rotary gear ring.

In the event of a leak in this case, open the inspection cover of the grease of the rotary ring gear and find that the grease has thinned. This thinning is characteristic of mixing with hydraulic or gear oils.

3. Whether the original grease of the equipment is selected correctly.

Due to the incorrect filling of grease in the original equipment, the grease will become thinner as soon as the temperature of the slewing bearing or slewing ring gear rises slightly. If the thinned grease is pushed to the upper section of the inner ring gear by the driving gear of the rotary motor during meshing, it will flow into the bearing cavity through the inner oil seal, and finally the grease will drip out of the outer oil seal.

4. Whether the outer oil seal is missing.

Carefully inspect the rotary oil seal to determine whether it is a local, sectional leak or a uniform peripheral leak. Check whether the entire rotary oil seal is missing.

If the excavator turntable leaks oil, you can go directly to the market to grind the beam and cut the surface, buy two sealing rings, and seal the sealing rings directly at the oil leakage. The materials excavated by the Blind Chang excavator are mainly soil, coal, sediment and soil and rock after pre-loosening. Judging from the development of construction machinery in recent years, the development of excavators is relatively fast, and excavators have become one of the most important construction machinery in engineering construction.

The three most important parameters of an excavator: operating weight (mass), engine power and bucket capacity.

Summary. It is normal for a small amount of oil to leak from the outer oil seal under working conditions. The so-called normal means that the amount of grease leaking out of the outer seal of the slewing bearing is approximately the same as the amount of grease injected into the slewing bearing.

But when there is an anomaly of a large amount of grease leakage on the excavator, it must be checked. Due to the peculiarity of the lubrication structure of the rotary part, it is necessary to analyze whether there is indeed a leak and determine where the problem lies, so as to finally solve the problem.

How to deal with the oil leakage of the large turntable of the excavator.

If it is a circle of oil leakage in the contact between the internal and external gears of the turntable, as long as it is not very serious, due to the design clearance of the slewing ring and the quality of the gear oil, it is a normal phenomenon, and it is not normal if it is more serious. If the state is caused by oil leakage from the grease nozzle, it means that the oil cup is not suitable.

It is normal for a small amount of oil to leak from the outer oil seal under working conditions. The so-called normal, poor He means that the amount of grease leaked through the outer seal of the slewing bearing is roughly equal to the amount of grease injected into the slewing bearing. But when there is an anomaly of a large amount of grease leakage on the excavator, it must be checked.

Due to the peculiarity of the lubrication structure of the rotary part, it is necessary to analyze whether there is indeed a leak and determine where the problem lies, so as to finally solve the problem.

How to replace the oil seal nickname.

Open the butter chan of the slewing ring to fill the flange cover, perform a low-speed rotation, an experienced maintenance worker with the rotation of the machine to observe, to see if there is any abnormality in the slewing ring? Is there any ring gear wear, chipping, or tooth loss? According to the observed situation, the corresponding punishment is given to the morning of the Ming Zen;