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The main condition should be that the low temperature similar viscosity is that the low temperature grease must be made of a grease produced from a fully synthetic base oil.
Commonly used are: Shanghai Tiger Head Hotolube's fully synthetic low-temperature aviation fat, minus 60 degrees Celsius dosage.
Kruber's 2 dl and 24 dl, -55 degrees, the actual use temperature will be lower.
Dr. LTS220 -60 degrees.
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1) According to the type of thickener.
2) According to the main purpose.
3) According to the use of departments and application parts.
4) According to the use of performance.
The main functions of grease are:
1) Lubrication, protection and sealing. Grease The vast majority of greases are used for lubrication and are called anti-friction greases. Anti-friction grease mainly plays the role of reducing mechanical friction and preventing mechanical wear, and also plays a protective role in preventing metal corrosion and sealing and dustproofing.
2) There are some greases that are mainly used to prevent metal rust or corrosion, which are called protective greases. For example, there are a few greases such as industrial petroleum jelly that are specially used for sealing, which are called sealing greases, such as thread grease. Greases are mostly semi-solid substances with unique fluidity.
The working principle of grease is that the thickener holds the oil where it needs to be lubricated, and when there is a load, the thickener releases the oil, thus acting as a lubricating agent.
3) At room temperature and at rest, it is like a solid, which can maintain its shape without flowing, and can adhere to the metal without slipping. At high temperatures or when subjected to external forces that exceed a certain limit, it can flow like a liquid. When grease is sheared by moving parts in machinery, it creates flow and lubrication, reducing friction and wear between moving surfaces.
When the shear action stops, it can regain a certain consistency, and this special fluidity of the grease determines that it can be lubricated in parts that are not suitable for lubricating oil. In addition, because it is a semi-solid substance, it seals and protects better than lubricating oil.
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The operating temperature of bearings or gears in low temperature environment is -60 120.
1) Great Wall 7008 general aviation grease has good low-temperature performance, with extremely low starting torque and operating torque, to ensure the normal operation of lubricated parts in low-temperature environment; It is mainly used in aviation motor bearings and gears, low-temperature bearings and high-speed bearings.
2) For non-aviation fields, Great Wall 7008 can be used for electromechanical ball bearings (such as DC generators) and motor bearings for outdoor work in cold areas.
3) In addition, Great Wall 7008 can also be used in instrumentation and electrical equipment under low temperature conditions, and its performance is close to that of fully synthetic low-temperature aviation grease, 24 DL and LP920 and other extremely low temperature greases.
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Most of the grease you choose is based on the working environment of your grease. Grease is divided according to 4 conditions: 1, according to the type of thickener 2, according to the main use 3, according to the use of the department and application part 4, according to the use of performance So who sells you the grease, you can find whom, they will tell you the Great Wall 7008 penetration, dropping point, viscosity, high and low temperature application range, etc.
The designation on the lubricant is based on the American Society of Automotive Engineers (SAE) oil viscosity classification. This is a kind of viscosity grade classification method, the lubricating oil is divided into high temperature type for summer, low temperature type for winter and all-weather type for winter and summer, and the specific classification of lubricating oil is 6 kinds of winter oil, 4 kinds of summer oil, and 16 kinds of winter and summer general oil. >>>More
English name of lubricating grease; grease thick, oily semi-solids. It is used for the friction part of the machine, which plays the role of lubrication and sealing. >>>More
If it is a family bicycle, this directional chain, you can use ordinary engine oil gasoline engine oil, if it is used in machine tools, generally use Mobil, brand lubricating oil.
Reasons for grease hardening: (1) The high temperature resistance is not enough, and the cherry blossoms or carbonization after oxidation; (2) Poor quality mineral oil is used, which volatilizes quickly; (3) Too much filler is added to the grease. >>>More
bearings, such as half-shaft bearings. Others, like the rear axle, are lubricated with gear oil, and the engine is oiled.