Ceramic bearing steel bearing performance characteristics with the battle

In recent years, domestic and foreign to the ceramic bearing research, development has made substantial progress and fruitful. In machine tools, chemical industry, aviation, etc have been applied, and play magical efficacy.

Ceramic bearing classification
1. Zirconia whole ceramic bearing
The ceramic bearing are resistant to magnetoelectricity insulation, wear-resisting corrosion resistance, no oil self-lubrication, high-temperature resistance etc, and can be used in the alpine extreme environments and special conditions. Rings and roller adopts zirconia (ZrO2) ceramic material, maintain implement use polytetrafluoroethylene (PTFE) as standard equipment, generally can also use glass fiber reinforced nylon 66 (RPA66-25), special engineering plastics (PEEK, PI), stainless steel (AISISUS316), brass (Cu), etc.
2. Si3n4 whole ceramic bearing
Si3N4 whole ceramic bearing rings and rolling body USES Si3N4 (Si3N4) ceramic material, maintain implement use polytetrafluoroethylene (PTFE) as standard equipment, generally can also use RPA66-25, PEEK, PI, and phenolic clip cloth bakelite pipe, etc. SiN4 system compared the ceramic bearing ZrO2 materials can be applied to a higher speed and load capacity, and suitable for higher environmental temperature. While offering high rigidity for high speed precision ceramic bearing spindle, the highest manufacturing precision of P4 to level UP.
3. Full pack the balls ceramic bearing
Full pack ball with all ceramic bearing a gap, with add ball without keep frame structure design, can the structure of bearing load than standard of ceramic ball, thus improve their load ability, also can avoid the limit for keep frame materials, can achieve ceramic keep frame type whole ceramic bearing corrosion resistance and heat resistance effects. This series of bearing not suitable for high speed, installation should ensure that gap surface mounted on don't carry axial load of the end.
4. Ceramic maintains a full ceramic bearing
Ceramic system maintains a has wear-resisting, high strength, corrosion resistance and self-lubrication advantages, adopt ceramic maintains a manufacturing full ceramic bearing can use in extremely strong corrosion, ultra low temperature and high vacuum harsh environment. Ordinary ceramic materials for ZrO2, Si3N4 or SiC
5. Mixed ceramic ball bearings
Ceramic ball especially si3n4 ball with low density, high hardness, low friction coefficient, wear-resisting, self-lubricating and rigidity is good wait for a characteristic, especially suitable for high speed, high precision and long life ceramic ball bearings rolling mixed for internal and external bodies (metal) circle. General internal and external circle using bearing steel (GCr15) or stainless steel (AISI440C), ceramics ball can choose ZrO2, Si3N4, or SiC materials.
Ceramic bearing advantages
Mention ceramic everybody thinks of above all is home to common tableware, with the development of science and technology ceramic itself has the physical properties are applied to all walks of life including bearing industry. To everybody below the advantages of introduces ceramic bearing!
First, as almost afraid of corrosion, so ceramic, ceramic roller bearing suitable for full of corrosive medium in the harsh conditions homework.
Second, because the density of ceramic scroll balls than steel low, weight more much less, so rotates the centrifugal role of foreign circle, and then can reduce 40% service life greatly extended.
Third, ceramic be heated bilges cold influence than steel small, so the bearing clearance must, allow bearing temperature changes in the more violent environment.
Fourth, the elastic modulus because ceramic than steel high, while loading difficult deformation, thus to improve the speed of work, and achieve high precision. ?
To sum up, because in the application of ceramic bearing have so many advantages, so each big import bearings manufacturers such as: NSK bearings, SKF bearting, FAG bearing were related to the field and introduction of corresponding products.
Ceramic bearing and all the advantages of the steel bearing compared with
1, speed and acceleration capability in high - more than 300 million dn value under the conditions of the run and skid, wear and fever can be decreased;
2, long service life, resistant to wear - the fatigue life of the ceramic bearing steel bearing than all is long 10-50 times, life is also mixed ceramic bearing steel bearing than all of life and high 3-5 times or so;
3 - ceramic materials required for the lubrication rarely low friction coefficient, using oil lubrication in lubricant, ceramic bearing is thinning or poor cases, lubricating ability still not under the steel bearing commonly used traditional lubricant;