The reasonable use of high temperature oil seals needs to pay attention to these matters!

Special care must be taken to prevent dirt from infiltrating the oil seal. Oil seals are classified according to the rotational speed of the shaft. Oil seals can be divided into low-speed oil seals (less than 6m/s) and high-speed oil seals (greater than 6m/s). According to the pressure level that the oil seal can withstand, it can be divided into normal pressure type oil seal and pressure type oil seal. According to the structure and sealing principle of the oil seal, it can be divided into standard oil seal and dynamic return oil seal. In addition, according to the material classification of the oil seal components, it can be divided into a skeleton type oil seal and a skeleton type oil seal, a spring type oil seal and a springless type oil seal.

The role of various sealing rings

The V-shaped seal is an axially acting elastic rubber seal used as a pressureless seal for the shaft. The sealing lip has good mobility and adaptability, can compensate for large tolerances and angular deviations, can prevent the internal grease or oil from leaking out, and can also prevent the intrusion of external splashing water or dust.

Installation and use of high-speed oil seal

Due to the presence of an oil film controlled by the oil seal edge between the oil seal and the shaft, the oil film has fluid lubricating properties. Under the action of the surface tension of the liquid, the rigidity of the oil film just makes the oil film and the air contact end form a meniscus, which prevents the leakage of the working medium and thus realizes the sealing of the rotating shaft. The sealing ability of the oil seal depends on the thickness of the oil film on the sealing surface. If the thickness is too large, the oil seal will leak; if the thickness is too small, dry friction may occur, causing the oil seal and shaft to wear; if there is no oil film between the sealing lip and the shaft, it will easily cause heat and wear. Therefore, when installing, apply some oil to the sealing ring, and at the same time ensure that the skeleton oil seal is perpendicular to the axis line. If it is not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, which will also cause excessive wear of the sealing lip. . During operation, the lubricant in the casing seeps out a little, so it is ideal to form an oil film on the sealing surface.

Zhejiang Chongfu Rubber & Plastic Co., Ltd. has an annual output of 10 million ball cage dust cover technical transformation projects (exhaust gas, waste water) self-acceptance open

Zhejiang Chongfu Rubber & Plastic Co., Ltd. annual production of 10 million ball cage dust cover technical transformation project (exhaust gas, waste water) environmental protection acceptance meeting was held on July 19, 2018 in the company's conference room. The meeting was presided over by the construction unit. The participants included Zhejiang Taicheng Environmental Technology Co., Ltd. (environmental assessment unit), Taizhou Huanmei Environmental Engineering Technology Co., Ltd. (design unit of waste gas treatment facilities), and Zhejiang Luan Testing Technology Co., Ltd. (acceptance monitoring unit) ) and other units and 3 specially invited experts (the list is attached).

2022.04.21

The shock absorber is used to suppress the shock of the spring and absorb the energy of the road impact when it rebounds after shock absorption. When driving a vehicle with a broken shock absorber, the car will bounce when it passes through potholes or undulating roads, the car parts are easily damaged, the noise inside the car is increased, and the occupants are also very uncomfortable. The shock absorber is used to restrain This bouncing. Without a shock absorber, the rebound of the spring will not be controlled. When the car encounters a rough road, there will be serious bouncing. When cornering, the tire will lose grip and tracking due to the vibration of the spring. handling stability.

2022.04.21

In fact, most of the rubber parts on automobiles are inseparable from the original intention of "buffering vibration isolation". For example, the invention of tires - tires were first used on bicycles. The first bicycles had no tires, and the road conditions in that era were very poor, either unpaved roads or stone roads, on which bicycles were driven. It is very uncomfortable for the cyclist, and it also limits the speed of the ride

2022.04.21

1. It can be classified according to the type of sealing medium: oil seals for gas sealing, oil seals for fluid sealing, oil seals for grease sealing; 2. It can be classified according to the shape of the seal: for the rotating shaft (inner seal), oil seal for the rotating casing (outer seal);

2022.04.21

Oil seals are mainly used to seal oil seals in rotary motion. Most of the main oil seals are equipped with springs as the main source of seal contact pressure. Due to the metal spring's resistance, fatigue resistance (long-term use without stress attenuation), and its good adjustability (spring length adjustment), and because the oil seal lip is not directly installed in the groove like the "O" ring It is connected to the skeleton through a certain flexible waist, so that it has a certain adaptability (that is, the machining accuracy does not need to be as high as the "O" shape, allowing a certain degree of eccentricity). The new oil seal is widely used in general After continuous research, new oil seals with long life and high speed are also being developed.