Something About Sintered Metal Powder Bearings

According to the forms of friction on work, bearings can be divided into rolling bearings and plain bearings. And the latter can further be divided into self-lubricating bearings, oil lubricated bearings and gas lubricated bearings.

Bearings that produced by powder metallurgy method generally known as powder metallurgy self-lubricating bearings, sintered metal powder bearings, and sintered metal bearings.

Powder metallurgy oil-impregnated bearing is a kind of alloy product. When the shaft rotates, due to the friction between the shaft and bearings, bearing temperature will be increased and there will be a pump suction function. As a result, oil will leak on the internal diameter of the friction surface. When the shaft stops rotating, the oil will be back to the inside of bearings. It is the working process of self-lubricating bearings. Therefore, these products have less consumption of lubrication oil. They can operate in a long period of time without the offering of external oil. They are especially suitable for some special places.

Oil-impregnated bearings have many advantages. Firstly, they are less noisy than the rolling bearings. The vibration is small. It is easy to produce them. They do not require special oil supply. Besides, they have flexible shape design. They can be manufactured in a large amount. The prices are comparatively low.

At the same time, they also carry a lot of disadvantages. Because they are sliding bearings, their friction coefficient is bigger than the rolling bearings'. Besides, costs will be high if they are produced in a small scale.

It should be clarified that the name of the oil-impregnated bearings does not mean that they do not require additional oil. It just shows that they have already carried a certain amount of oil. And it is unnecessary to add a lot of oil to them.

Sintered metal powder bearing has become essential part for the development of the automotive, appliance, audio equipment, office equipment, precision machinery. Currently, according to bearing usage, the main transport machinery such as cars account for about 41%. And the industrial machinary like office machinery take up about 21%. Other applications account for about 5%.

Except for the important usage of the sintered metal powder bearing, the amount of bearing material is increased gradually. Meanwhile, it plays a more and more important role in the manufacturing of machinery. Now, sintered metal powder bearing material is not only the substitute for some traditional bearing alloys, but also a kind of important structural material in the mechanical manufacturing industry.

SeekPart is the global B2B platform in the industry of mechanical parts. SeekPart aggregates the trade leads in this area, and our ultimate target is to benefit the buyers and sellers of mechanical parts by utilizing these leads through our online tools.

You can refer to agricultural bearing for other information

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Engineering Plastic Bearing and Metal Compound Bearing

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.

SeekPart.com is the global B2B platform in the industry of mechanical parts. SeekPart aggregates the trade leads in this area, and our ultimate target is to benefit the buyers and sellers of mechanical parts by utilizing these leads through our online tools.

Click for more information about the seekpart

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.