Sliding friction occurs when the sliding bearing works; the magnitude of the rolling friction mainly depends on the manufacturing precision; and the frictional force of the sliding bearing mainly depends on the material of the sliding surface of the bearing. The sliding bearing generally has a self-lubricating function on the working surface; the sliding bearing is divided into a non-metallic sliding bearing and a metal sliding bearing according to the material.

Non-metallic sliding bearings are mainly based on plastic bearings. Plastic bearings are generally made of engineering plastics with better performance. More professional manufacturers generally have self-lubricating technology for engineering plastics, through fibers, special lubricants, and glass. Zhuzhu and other engineering plastics are self-lubricating and reinforced to achieve certain performance, and then processed into self-lubricating plastic bearings by injection molding with modified plastics. Currently, the world's more professional manufacturers include German IGUS and China's CSB. the company.

Metal sliding bearings are currently the most commonly used three-layer composite bearings. These bearings are generally made of carbon steel as the substrate. Sintering technology first sinters a layer of spherical copper powder on the steel plate, and then sintered a layer on the copper powder layer. 0.03mm PTFE lubricant; the main role of the middle layer of spherical copper powder is to strengthen the bonding strength between the steel plate and PTFE, of course, it also plays a certain role in bearing and lubrication; currently the world's more professional manufacturers have the United States GGB, Japan's OILES and China's CSB;

It is not difficult to see through the above description that the plastic bearing and the metal sliding bearing have the following differences: 1. The plastic bearing is a lubricating material as a whole and has a long service life; while the metal sliding bearing lubricating layer is only a surface of 0.003 mm PTFE, when this is thin The first layer of friction will declare the end of service life; 2. The plastic bearing will not rust and corrosion during use, and the metal bearing will be easy to rust and cannot be used in chemical liquid; 3. The quality of plastic bearing is better than metal. Light, this is more suitable for modern lightweight design trends; 4, plastic bearing manufacturing costs are lower than metal; plastic bearings are injection molding processing is more suitable for mass production; 5, plastic bearings in operation without any Noise, has a certain vibration absorption function; Because plastic bearings have many advantages over metal sliding bearings, the output of plastic bearings is expanding day by day, and the use of plastic bearings is also constantly expanding, from fitness equipment to office equipment and the automotive industry. Plastic bearings are used in the same way, and cars that are currently driving on the road do not use plastic bearings. The market prospect of plastic bearings is infinitely broad!

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