Why is the service life of a dry electromagnetic clutch so short? What are the main reasons?

The service life of the electromagnetic clutch is directly related to its structure, material, use environment, maintenance, load weight, model size, and surface temperature. The quality and service life of the electromagnetic clutch directly affect the quality and service life of the electromagnetic clutch, in addition, it is necessary to pay attention to the humidity of the place or whether there is a large amount of dust in the use process. Maintenance and maintenance is one of the daily homework that all equipment needs to do, whether the dry electromagnetic clutch is operating normally, whether there are no potential safety hazards, etc., which can indirectly affect the level of production and cost.

The life of the electromagnetic clutch coil is generally more than ten years.

Causes of the decline in the service life of the electromagnetic clutch brake:

Electromagnetic clutches and electromagnetic brakes are general transmission equipment, which are widely used in printing machinery, packaging machinery, automation equipment, machine tools and other fields. The above industry machinery needs to be used in the transmission equipment electromagnetic clutch and brake, in the process of use more need to be used to guarantee, such as the electromagnetic clutch and electromagnetic brake service life is to ensure one of them. So how to ensure the life of electromagnetic clutch and electromagnetic brake?

Consider it in the following directions:

1. It is related to the friction materials of electromagnetic brakes and electromagnetic clutches, and the use of new friction materials has a longer service life than conventional friction materials.

2. It is related to the load characteristics, the dynamic load moment and the static load moment, and the load is large, appears in a sudden way, and is unloaded.

The mode is not complete, and it will also have a great impact on the life of electromagnetic clutches and electromagnetic brakes.

3. It is related to the action reflection time of electromagnetic clutch and electromagnetic brake, that is, the power on and on, power off and release time should be short, otherwise it will shorten the life of electromagnetic clutch brake.

4. It is related to the life of the brush material, and the quality of the brush material is good, which can prolong the service life of the electromagnetic clutch and electromagnetic brake. It should be noted that the installation position of the electromagnetic clutch and electromagnetic brake should not be close to the place with oil and lubricating oil splash.

5. The electromagnetic clutch and electromagnetic brake can be installed on the same axial or butt shaft, and when installed on the butt shaft, two must be ensured.

The degree of concentricity of the shaft. After the electromagnetic clutch and electromagnetic brake are installed, there shall be no friction between the yoke and the moving disk, but the gap shall not be exceeded. The gap between the moving disc and the armature δ should ensure the size specified in the table.

6. In addition, try not to have lubricating oil and other oil stains in the use environment, especially the oil stains must not pollute the electromagnetic clutch and electricity.

The action part of the magnetic brake.

The service life of the dry clutch is determined according to the actual use. Under normal circumstances, a set of new dry clutch can be used for 20-300,000 kilometers without a problem. A dry clutch is one that uses air to cool the clutch.

Working in a shorter period of semi-clutch mode, the clutch should not overheat.

The difference between dry dual clutch and wet dual clutch is that the clutch plates work in different environments:

1. Wet dual clutch disc refers to the clutch disc soaked in the transmission fluid, while the clutch disc of dry dual clutch is in direct contact with the engine flywheel.

2. Technical maturity and reliability: Wet dual clutch is more stable to use because the clutch plate works in hydraulic oil, and the oil field liquid plays a certain role in heat dissipation.

3. Because of poor heat dissipation, dry dual-clutch is prone to the risk of high temperature or even ablation of clutch plates in congested urban areas, and the technical maturity of wet dual-clutch gearbox should be high.

4. The wet dual-clutch structure is complex, the manufacturing cost is high, and its power transmission efficiency is not as high as that of the dry type.

Photo by Zhang Fengxue of Pacific Automobile Network).