Special lubricant for shield machine
This product is especially suitable for lubrication of main bearing of shield machine with pumping grease feeding mode, as well as lubrication and protection of other bearings.
- 20 ~ 120 ℃
1. Excellent anti-wear and extreme pressure performance, ensuring good lubrication under fretting wear, heavy load and impact load;
2. Excellent mechanical stability, long-term use of grease is not easy to lose thin;
3. Good sealing, protect the bearing from the invasion of impurities and water;
4. Excellent pumping performance, rust resistance and water resistance;
5. It can effectively extend bearing life and reduce maintenance cost.
Lubricants are liquid or semi-solid lubricants used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and machining workpieces. They are mainly used for lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering (Roab).
As long as it is applied between two relatively moving objects, and can reduce the friction and wear caused by contact between the two objects, it is called lubricating oil.
Using the erroneous zone
Myth # 1: add as much oil as you can
The amount of lubricating oil should be controlled between the upper and lower scales of the oil ruler. Because too much oil will be from the cylinder and piston gap into the combustion chamber combustion of carbon. These deposits increase the compression ratio of the engine and increase the tendency to knock. Carbon in the cylinder is red hot state is also easy to cause premature combustion, such as falling into the cylinder will aggravate cylinder and piston wear, but also accelerate the pollution of lubricating oil. Secondly, excessive lubricating oil increases the stirring resistance of crankshaft connecting rod, which increases fuel consumption.
Myth 2: when does a lubricant turn black
This understanding is not comprehensive. For the lubricating oil without detergents and dispersants, the color blackening is indeed the performance of the oil has been seriously deteriorated, but modern automobile use of lubricating oil is generally added with detergents and dispersants. This cleaning agent will adhere to the piston film and black carbon washing down, and dispersed in the oil, reduce the formation of high temperature precipitation engine, so the lubricating oil after a period of time to black, but at this time the oil is not completely deteriorated.
Myth 3: lubricating oil is often added without replacement
Always check that the oil is correct, but replacing it without replacing it will only make up for the lack of oil quantity, but not completely compensate for the loss of oil performance. In the process of use, the quality of lubricating oil will gradually decline due to pollution, oxidation and other reasons, and there will be some consumption, so that the quantity will be reduced.
Myth 4: additives are useful
The truly high quality lubricating oil is the finished product with a variety of engine protection functions, the formula has contained a variety of additives, including anti-wear agents, and the most exquisite formula balance to ensure the full play of all kinds of performance. Adding other additives can not bring additional protection to the vehicle, but easily react with the chemical substances in the oil, resulting in the decline of the comprehensive performance of the oil.