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Reasonable selection of grease

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Reasonable selection of grease

来源: http://qtusz.com点击: Date: 2019-12-05 00 : 00Source : http : //qtusz.comClick :

Reasonable selection of grease

Grease is a thick, oily, semi-solid. It is used in the friction part of the machine for lubrication and sealing. It is also used on metal surfaces to fill voids and prevent rust. It is mainly composed of mineral oil (or synthetic lubricating oil) and thickener.
1.The operating temperature of the grease should be at least 20-30 degrees below its dropping point.

When the temperature is high, choose a grease with good oxidation resistance, low evaporation loss and high drop point. When the temperature is low, choose a grease with a low starting moment and a similar viscosity. .
2.The selected grease should be suitable for the speed of use of the friction pair being lubricated.

At high speeds, a grease with a large cone penetration made from a low viscosity base oil should be selected; for low speed greases, a grease with a high cone penetration grade made from a high viscosity base oil should be selected.
3. The selected grease should be suitable for the load.

For heavy loads, greases with high base oil viscosity and high thickener content should be selected. When the load is particularly large, care should be taken to choose a grease with pressure additives or fillers (molybdenum disulfide, graphite); at low and medium loads, generally use a No. 2 consistency soap with a short, medium viscosity base oil.
4.The selected grease should be suitable for the environmental conditions used

In environments with humid air or contact with water, calcium-based, lithium-based, and lithium-based composites with good water resistance should be used. When there is a lot of dust, thicker (ie higher grade) greases should be selected to ensure tightness. Preferably, impurities can be prevented from being mixed into the friction pair.

grease

Disclaimer: This article is for communication and learning only. The copyright belongs to the original author. Some articles could not be contacted with the original author in time. !! !!

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