One. product description
This series of products is a kind of high-temperature resistant 1000 to 1800 degrees, low-speed and heavy-load full-loaded rolling elements or plain bearings, which are selected according to the working speed of the bearings. The bearing type usually selects deep groove ball bearings, plain bearings, angular contact bearings, outer spherical bearings, double row ball bearings, self-aligning bearings, etc., the size range of inner diameter 12 mm to outer diameter 360 mm, the highest precision P5 level, self-lubricating function by The user is free to choose. Considering that the grease will evaporate and fail under high temperature environment, it is generally not lubricated with grease, and is made of self-lubricating materials or solid lubrication.
The operating temperature of super high temperature bearings is divided into two temperature sections, 1000-1400 ℃, 1500-1600 ℃. The bearings of different high temperature sections are made of different high temperature materials. The following materials are usually used:
原子晶体 ，高温时抗氧化，抗振性能差，难以加工，热稳定性较好，而且还能抵抗冷热冲击，在空气中加热到1000℃以上，急剧冷却再急剧加热，也不会碎裂，耐腐蚀性能更好，可以在酸碱液体里面持久工作。 Ceramic materials usually refer to nitrides and carbides, crystal structures, formed by reaction and sintering. They are super-hard substances. They are lubricating and wear-resistant. They are atomic crystals . It has good thermal stability and can resist cold and heat shocks. It can be heated to above 1000 ℃ in the air, and then cooled sharply and then heated sharply without cracking. It has better corrosion resistance and can work for a long time in acid and alkali liquids.
2. Graphite products
Graphite is a crystalline mineral of carbonaceous elements. The crystal lattice is a hexagonal layered structure. The distance between each mesh layer is 3.40A. The carbon atom spacing in the same mesh layer is 1.42A. It belongs to the hexagonal crystal system and has integrity. The layered structure is dominated by molecular bonds and has a weak attraction to molecules, so its natural floatability is very good.
Graphite is soft, black and gray, greasy, and can contaminate paper. The hardness is 1 to 2. The hardness can increase to 3 to 5 with the increase of impurities in the vertical direction. The specific gravity is 1.9 to 3.9. Under the condition of isolated oxygen, its melting point is above 3000 ℃, which is one of the most temperature resistant minerals. However, its high temperature oxidation resistance is poor, and it starts to oxidize at 500 degrees. Such bearings are required to work under high temperature and oxygen-free environment.
In addition to the ordinary bearing technology, the manufacturing process of ultra-high temperature bearings must also pay attention to the bearing conditions, manufacturing accuracy, and connection between processes. For warm bearings running at higher speeds, special attention should be paid to the reasonable selection of vibration values.
1. The bearing has high temperature resistance, and can continuously and safely work in the range of 1000 to 1800 degrees.
2. The bearing has a wide range of speeds, which can be selected at low and medium speeds to avoid high-speed operation.
3. A wide range of bearing types can be manufactured into deep groove balls, plain bearings, articulated bearings, angular contact, self-aligning bearings, etc., suitable for different occasions.
4. Usually adopts open structure.
5. Impact resistance, anti-glue, long life, no need to add any lubricant in the whole process, to achieve true maintenance-free.
three. Technical Parameters
1. Model: GM ---
2. Dimensions: Same as the size of the corresponding standard bearings, and also accept non-standard low-temperature bearings
3. Size range: minimum inner diameter 12 mm, maximum outer diameter 360 mm
4． Temperature resistance range: 1000--1800 degrees
5． Suitable speed: low speed operation
6. Dynamic load and static load: same as national standard load
7. Lubrication: self-lubricating without lubricant or solid graphite
8. Structural seal: open and sealed
1. When selecting a bearing, be sure to pay attention to the conditions of use, such as temperature, speed, and presence of oxygen.
2. High temperature bearing coordination, selected according to national standards, shaft f6 is recommended
3． In the process of selection, maintenance, installation and use, if you have any questions, please contact us directly