When it comes to lubrication, no one knows that the correct lubrication method can improve the performance of the equipment and prolong its life. Lubrication of any equipment is essential, but in actual production due to various reasons, it enters into the misunderstanding of lubrication. For example, oil can be lubricated, the higher the oil viscosity, the better the effect. In order to avoid damage to the machine caused by incorrect operation, this article introduces 9 common misunderstandings for reference.
1. Think that the purpose of lubrication is to speed up the operation of the machine
Relatively moving parts in the machine produce friction and wear on the contact surface. According to statistics, more than 1/3 of the world's energy consumption is friction loss. When the amount of wear exceeds the allowable limit, it will directly affect the normal operation and life of the machine. Therefore, the lubricant is added between the relatively moving parts to form a lubricating oil film, which reduces friction and reduces wear, while also playing a role in cooling, cushioning vibration absorption, and sealing.
The purpose of lubrication is not only to make the machine run faster, but also to ensure the normal operation of the machine and extend its life.
2. Misunderstood that oil can be lubricated
Lubricants have different types and working properties. In order to improve the surface properties of lubricating oils, corresponding additives must be added to them.
In order to obtain reasonable lubrication of the machine, different types, different working conditions, and different refueling methods must choose different types of lubricants and additives.
3. The more lubricating oil, the better the lubrication effect
Excessive grease lubrication will increase resistance, cause bearing heating, and cause grease leakage. High-speed and heavy-duty equipment is particularly common.
The amount of grease filled in rolling bearings is generally less than 1/3-1/2 of the bearing clearance.
4. The greater the lubricating oil viscosity, the better the lubrication effect
Viscosity is the main indicator of lubricating oil. The standard is usually to determine the brand of lubricating oil at a temperature of 100. The higher the brand, the thicker the lubricating oil film, and the friction of the friction surface decreases, but the resistance increases, power loss increases, and energy waste increase.
5. Select the oil according to the oil grade specified in the unchanged equipment manual
Most equipment administrators believe that the oil specified by the equipment manufacturer is a law, but in fact the oil specified in the manual is a general condition and may not meet the actual conditions. It should be selected flexibly according to actual conditions of use.
6. After the lubricating oil turns black, it indicates the deterioration of the lubricating oil
Darkening of the lubricating oil indicates that the lubricating oil has deteriorated. This kind of understanding is that if the lubricant is unilaterally added with additives, the bearing surface often forms a dark protective oil film. It is normal to turn black during use, and there is no need to remove the blackened lubricant. Therefore, it is necessary to determine whether the lubricating oil has deteriorated, analyze it comprehensively, and change the oil according to its quality.
7. The used lubricating oil cannot be used and must be thrown away
In fact, a lot of lubricating oil can be used in addition to the rotten oil.
The oil that is difficult to recycle can be burned as fuel oil after simple treatment.
8. Lubricating oil can be replaced and used
The choice of lubricating oil is based on the operating conditions of the machine, the operating environment, the specific characteristics of the friction surface and the lubrication method. The type and variety of the selected lubricating oil are different and generally cannot be replaced.
9. Do not replace or replenish lubricating oil for a long time
After the lubricating oil has been used for a period of time, its performance drops or changes, and the lubricating oil is not replaced or supplemented in time, and the lubricity will deteriorate. Easily damage the equipment.
