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Mountain bicycle zro2 full ceramic bearing 6902-2RS
Advantages of Ceramic Bearings
essentially increased life time
high stiffness because of high Young’s modulus,lower vibration
wear resistance and cost effective lubrication
electrical insulation and non-magnetism
high temperature resistance up to 1000oC
high corrosion resistance to most acids and alkalies
Hybrid Ceramic Bearing:
Ceramic bearings offer a significant performance improvement from those made from traditional steel. Our ceramic bearings are manufactured from silicon nitride (Si3N4), an exceptionally hard non-metallic material rated for speeds to 2 million dN, offering a wide selection of benefits.
Hybrid Bearings have steel rings and ceramic balls. Si3N4 Ball is the most popular for the balls as it has only 40 percent of the density of bearing steel but is much harder giving greater wear resistance. Zirconia is heavier with 75 percent of the density of steel so is less suitable for hybrid bearings..
Full Ceramic Bearing :
Full Ceramic Bearings are made entirely of ceramic material and are superior to common steel bearings in many ways. Ceramic is the perfect material for any application seeking to achieve higher RPM’s, reduce overall weight or for extremely harsh environments where high temperatures and corrosive substances are present. Applications such as cryopumps, medical devices, semiconductors, machine tools, turbine flow meters, food processing equipment, robotics and optics. Ceramic materials commonly used for bearings are Silicon Nitride (Si3N4), Zirconia Oxide (ZrO2), or Silicon Carbide (SiC.)
Ceramic Balls:
We are special in making Silicone Nitride Balls (Si3N4 Balls,Zicronia Balls (ZrO2 Balls),Sic Ceramic Balls , Aluminum Oxside Valve (AI203) ceramic balls.
Compared with steel, ceramic materials are noted for their better or particular characters, such as wear-resistance, corrosion resistance, high temperature resistance, electrical insulation (except SiC), non-magnetic, high strength, high rigidity, and low specific gravity. These properties qualify them for replacing steel to make bearings serve in conditions of higher speed, harsh environment and less lube, and decrease wear, noise, vibration and maintenance time of bearings, and eventually increase performance, reliability and life of bearings.
Higher hardness of rolling element | - Better wearability |
| - Greater durability | |
| - Longer service life | |
Lower gravity | - Lightweighting the system |
| - Lower centrifugal force during rotation, consequently less bearing wear and heat generation and bearings can run at higher speed | |
Higher stiffness | - Increase the rigidity of system |
| - Less sphere deformation under load and this will transfer energy better | |
Higher precision and better surface finish of ceramic balls | - Less friction between ceramic balls and races |
| - Less wear | |
Good corrosion resistance | - Less maintenance or maintenance free |
| - Races will not block due to rusty | |
Self-lubrication | - Suitable for dry run |
Magnetism free | - Less magnetic contaminations to be magnetized into the raceway that can affect smooth rotation and destroy the raceway |
Electrical isolation | - No galvanically stimulated corrosion |
| - Can be used in applcation that requires electrical isolation |
if you are interested in this product, please contact me freely.
Connie
Email:connie at
Whatsapp:+8615073676619
Wechat:empty919
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