Excavator gear oil, how to achieve accurate lubrication and efficient protection

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Excavator gear oil, how to achieve accurate lubrication and efficient protection?
In the complex mechanical system of excavator, gear plays a key role in transferring power, changing speed and torque. Gear oil is the core element to ensure the normal operation of the gear, and its accurate lubrication and efficient protection ability is directly related to the performance, reliability and service life of the excavator. Next, we delve into the principles and ways of excavator gear oil to achieve these two key functions.

1. Lubrication mechanism of gear oil
(A) The formation of oil film, reduce friction
When the excavator is working, the gears mesh, roll and slide with each other, resulting in great friction. The first task of gear oil is to form a tough and continuous oil film on the gear surface. This film acts like a "protective suit" on the gear, separating the metal surface and significantly reducing direct contact and friction between the gears. For example, in the walking mechanism of an excavator, a large number of gears work together, and the oil film formed by high-quality gear oil can effectively reduce gear wear and ensure the smoothness of walking. "Gear oil lubrication of excavator travelling mechanism".

(2) Improve the lubrication state and adapt to different working conditions
Different excavator working conditions, such as excavation, loading and unloading, site leveling, etc., the load, speed and temperature of the gear are very different. Gear oil has a special formula and performance, can adapt to adjust the lubrication state under different working conditions. Under heavy load conditions, the additives in the gear oil will play a role in enhancing the strength and carrying capacity of the oil film, and preventing the gear from gluing and bruising due to excessive load, which involves the "gear oil protection under heavy load conditions of the excavator". At high speed, the gear oil needs to maintain a low viscosity to reduce mixing losses, while ensuring sufficient oil film thickness to achieve efficient lubrication.

Second, the key factors to achieve accurate lubrication
(A) Suitable viscosity selection
Viscosity is one of the important indexes of gear oil, which directly affects its lubrication effect. The viscosity is too large, the gear oil fluidity is poor, can not quickly reach the parts that need lubrication, and the stirring resistance is large, resulting in increased energy loss; The viscosity is too small, the oil film is difficult to form, and it is easy to cause gear wear. For excavators, it is necessary to select the appropriate viscosity gear oil according to its working environment temperature, gear speed, load and other factors. For example, excavators operating in cold areas should choose low-viscosity gear oil in winter to ensure smooth start and rapid lubrication at low temperatures, which is related to the "viscosity selection of excavator gear oil in cold areas."

(2) Advanced additive technology
A variety of functional additives are added to the gear oil of modern excavators, which are the key to accurate lubrication. The anti-wear additive can form an extremely thin protective film on the gear surface to effectively resist wear. The extreme pressure additive reacts with the metal surface under high load conditions to form a protective film with high compressive strength to prevent the gear from biting under heavy load. Antioxidants can extend the service life of gear oil, prevent its deterioration due to oxidation, affecting the lubrication performance. These additives cooperate with each other to ensure that the gear oil can achieve accurate lubrication under various complex working conditions, "excavator gear oil additive function".

3. Ways to provide efficient protection
(1) Prevent corrosion and rust
Excavators often work in harsh environments, and moisture, dust and various corrosive substances are easy to invade the gearbox. Anti-rust agents and preservatives in gear oil can form a dense protective film on the metal surface, preventing water and oxygen from contacting the metal, thereby preventing gear rust and corrosion. Especially in coastal areas or working environments with high humidity, gear oil with good rust and corrosion resistance is crucial to protect excavator gear, which involves "rust and corrosion prevention of excavator gear oil in coastal areas".

(2) Curbing the generation of bubbles
In the cycle of gear oil, due to the high-speed stirring of the gear and the contact between the oil and the air, it is easy to produce foam. Foam will reduce the lubrication performance of the gear oil, resulting in cavitation and damage to the gear surface. The high-quality gear oil is added with defoamer, which can quickly inhibit the generation of foam, and quickly dissipate the generated foam, ensure that the gear oil is always in good working condition, achieve efficient protection of the gear, and "antifoam performance of excavator gear oil".

In short, excavator gear oil achieves accurate lubrication and efficient protection of excavator gear through unique lubrication mechanism, accurate viscosity selection, advanced additive technology, and excellent anti-rust, anti-corrosion, anti-foam and other properties. Correct selection and use of gear oil that meets the requirements of excavator working conditions is an important guarantee to ensure long-term stable operation of excavator, reduce maintenance costs and improve operation efficiency.