Diagnosis of Eight Misunderstandings in Lubrication and Maintenance of Hydraulic Press 返回首页


Numerical Control Hydraulic Press has strong versatility. It adds a pressure sensor to the hydraulic machine tool. After data acquisition and system processing composed of a microcomputer, it is converted into a pressing force value and digitally displayed. When the limit is exceeded, it will send out sound and light alarm and shutdown signals. In order to achieve the purpose of automatic control of the pressing force.


1. Need to lubricate and add a little oil


Due to the differences in the working methods and conditions of the various parts of the equipment, there are strict requirements for the refueling cycle, each refueling amount and refueling method of each lubrication point. Drivers and maintenance personnel should follow the requirements strictly Implementation, can not add a little oil at will, it is difficult to meet the lubrication requirements.


2. It doesn't hurt to add more lubricant


The structural type and use condition of the equipment's operating parts determine the amount of fuel to be added, and there are usually clear regulations and requirements in the equipment manual. The maintenance personnel should make appropriate supplements according to the operating instructions, the oil level or dipstick and the window of the equipment configuration, and excessive filling of lubricating oil will be harmful and useless.


3. It has been oiled and still lacks lubrication


The different moving parts, working methods and ambient temperature of the equipment have different requirements for lubricants. Different types and different brands of lubricants should be filled as required. Only use lubricants that contain necessary additives and have the required physical and chemical indicators to make the equipment have good lubrication. It is a bad thing to add oil without looking at the brand.


Hydraulic Press

Hydraulic Press

4. Dry quickly after adding lubricating oil


Strictly speaking, this is a misunderstanding in conceptual understanding. Only fuel directly participates in the work. Adding lubricating oil generally refers to adding lubricating oil between the friction pairs that move with each other, filling the unevenness with it, and maintaining a certain thickness of lubricating oil film, so as to separate the two contacting surfaces of the friction pair and reduce friction The purpose of resistance and wear reduction, while also cooling the parts and sealing. These effects of refueling are indirectly supporting fuel work.


5. The oil is dirty and poured


In addition to the hydraulic oil that has been rancid and deteriorated, there are more Hydraulic Oils and lubricants that are still available. Only hydraulic oil mixed with metal particles can be reused after precipitation and filtration. After simple treatment, the oil with heavier pollution can be used for lubrication of rough processing equipment and rust prevention of outdoor equipment, or waste oil can be collected and turned over for reuse of waste oil, which can save energy and reduce waste. Although one fall saves trouble, it pollutes the environment and violates the principle of sustainable development.


6. Change the sealing ring if the oil is leaking


In hydraulic systems, most of the oil leakage failures are caused by the failure of the sealing ring. The sealing ring is elastic (pressure) for sealing.


After the sealing ring is installed in place, its elasticity should be able to pre-stress the contact surface when there is no oil pressure, that is, its section should have a certain degree of compression and deformation; when there is oil pressure, it will be pressed to the side of the groove by elasticity Play a sealing role. When replacing the sealing ring, the sealing ring of the same size must be selected in strict accordance with the instruction manual, otherwise the appropriate compression degree cannot be guaranteed.


At the same time, special attention should be paid: do not use the used seal ring, and carefully check the surface quality when using a new seal ring. After confirming that there are no defects such as small holes, protrusions, cracks and grooves, and there is sufficient elasticity. be usable. If the oil is leaking, it will definitely be a mistake to change the sealing ring so-so.


7. The seal ring model is good, just put it on


When replacing the sealing ring, the open part of the hydraulic system should be cleaned strictly, and impurities and dirty oil should be prevented from mixing into the system. When installing, use special tools to prevent it from being scratched by sharp metal edges or even fingernails. It is not allowed to directly cover the sealing ring over the threaded part of the component. In special cases, make a simple installation tool or use a plastic film to wrap the threaded part, and apply clean hydraulic oil of the same type to the tool or membrane. The argument of just fit it is essentially unworkable.


8. Put the spare seal ring freely


Since the sealing ring contains more additives, it is easy to age and deteriorate. Therefore, during storage, it is necessary to avoid sunlight, and prevent it from being damp and heated. It is also necessary to avoid contact with acid and alkali substances. Usually, the storage period should not exceed one and a half years. They cannot be tied up and hung with rope or wire for storage. Therefore, it is impossible to put the spare seal ring casually.


If necessary, please contact the Hydraulic Press Supplier


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