Chassis Lubrication of Automotive Grease

2022-07-31

The structure of the automobile chassis is compact and complex. There are about 20 to 40 different parts of the chassis of trucks, trailers, buses, construction machinery and equipment, cranes, forklifts, combine harvesters and some forklifts that need to be lubricated frequently. friction work. The lubrication of the chassis is very important to ensure the normal operation of the vehicle. If the lubrication is not good, it will cause damage and failure of the parts and affect the technical condition of the vehicle. The grease for automobile chassis varies according to the structure and characteristics of the mechanical parts and the requirements for grease and other working conditions. The following is a brief sharing of the performance requirements of lubricating greases according to the lubrication parts.

01. Clutch

Clutch

The clutch pedal, clutch release fork, and brake pedal bearings all require grease lubrication. The clutch bearing moves periodically and is easily polluted by external water and dust. It needs good extreme pressure and water resistance, and the clutch in the high temperature part also needs to have good high temperature resistance. The structure of the clutch is special, and it is difficult to grease the release bearing after loading. Burnout of clutch release bearing is mainly caused by poor lubrication.

02. Transmission

Transmission

The transmission is the main transmission mechanism of the automobile transmission system. In the transmission, the gears, bearings and various types of gears are lubricated by splash lubrication. The connection hinges of the external control mechanism of the transmission require temperature-resistant and long-life grease.

03. Transmission Shaft

The drive shaft is mainly composed of universal joints, intermediate drive shafts and intermediate support devices, which are easily polluted by water and have a large load. Grease with good water resistance, extreme pressure and wear resistance, adhesion and high temperature is required. The main failure of the drive shaft in use is caused by the lack of grease wear. For example, the dust sleeve at the end of the spline shaft is damaged during vehicle operation. If you often drive off-road, oil, impurities and water will enter, which will cause bearings, splines. and spline grooves are severely worn due to corrosion.

04. Suspension

The car has front and rear suspension devices, the front suspension has a barrel shock absorber, and the rear suspension is equipped with a main leaf spring, which needs lubrication protection between the leaf springs. Automobile leaf springs are composed of many elastic steel sheets with the same width and thickness and different lengths. Its function is to connect the frame and the axle in the form of suspension, which is exposed between the frame and the axle to bear the load impact of the wheel on the frame and reduce the violent vibration of the body. This part is easy to come into contact with water and soil and requires the grease to have good anti-water and anti-wear properties.

05. Power Steering

The steering system of an automobile is composed of a steering gear, a steering control mechanism and a steering transmission mechanism. During the turning process, there is rolling friction between the various components, so it is necessary to add anti-wear grease. If the lubrication is poor during use and maintenance, it is easy to cause early damage to the steering knuckle, king pin bushing, king pin and steering knuckle bearing. The steering knuckle kingpin, bushing and bearing are mainly lubricated by grease. After the vehicle is wading in water, water will easily enter the matching pair, resulting in the reduction of grease and quality deterioration. At the same time, due to the entry of sediment and impurities, the wear will be accelerated.

06. Brake System

The automobile braking system consists of drum brakes, brake pedals, hand brake operating valves, air compressors, air storage tanks, load-sensing valves, etc. Greases with good temperature resistance and certain extreme pressure properties are required. The lubrication of the braking device refers to the lubrication of the brake camshaft and the lubrication of the fixing pin and sleeve of the front brake shoe. Because the vehicle needs to be cleaned frequently when driving off-road, the brake device will be corroded, and in severe cases, the brake shoes will not be able to return, affecting the driving safety. In this case, braking again will easily cause the front brake shoes to break. Therefore, it is very important to add lubricating grease with good performance

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