[ad_1]
At present the used bearings can be classified into rolling bearing and sliding bearing. As for their working principle, people can distinguish them from their names. When the rolling bearing is in operation, the occurred friction is called rolling friction. When the sliding bearing is in operation, the friction is known as sliding friction. The amount of the rolling friction depends on the bearing’s manufacturing accuracy. As for the amount of the sliding friction, it has a close relationship with the material of the bearing’s sliding surface. the working surface of the rolling bearing has the self-lubricating function. According to the material, the sliding bearing can be grouped into non-metal sliding bearing and metal sliding bearing.
In the market, the plastic bearing is the main representative in the non-metal sliding bearing. In general situation the plastic bearing is made by the engineering plastics with a relatively good property. The professional factories are usually good at the technologies such as self-lubricating technology of the engineering plastics. Through the fiber, special lubrication, glass bead and so on the self-lubricating property can be enhanced. And then in use of the treated engineering plastics, the self-lubricating plastic bearing can be processed by the way of injection technology. At present, the manufacturers such as IGUS in Germany, CSB in China are quite excellent in this field around the world.
Now the most popular metal sliding bearing is three-layer compound bearing. The carbon steel plate is the base plate of this bearing. Firstly, through the sintering technology a layer of ball-shaped copper powder will be sintered on the carbon steel plate. Then a layer of 0.03mm PTFE lubricant will be sintered on the layer of the copper powder. The function of the ball-shaped copper powder is to enhance the bonding strength between the carbon steel plate and PTFE. What’s more, in operation it can have the function of support and lubrication. GGB company in the USA, OILES company in Japan and CSB company in China are the professional manufacturers.
From the above-mentioned introduction, it can be concluded that the Plastic Bearing and metal sliding bearing have the following differences. Firstly, the whole plastic bearing is the lubricating material and it has a long operation life. As for the metal sliding bearing, only the 0.003mm PTFE is the lubricating layer. When the thin layer is removed, the operation life of the bearing is over. Secondly, the plastic bearing is rust-proof and corrosion-proof. As for the metal bearing, it is easy to rust and cannot be used in the chemical liquid. Thirdly, compared with the metal bearing, the cost of the plastic bearing is lower. Besides, there is no noise when the plastic bearing is in operation and this bearing has the function of vibration absorption.
[ad_2]
