Metallic elements mixed with non-metallic elements are used to make ceramics. Actually, the term ceramics comes from a Greek word meaning clay or potter's earth. This word is Keramos.
To make a Ceramic ball bearing both non-metallic and inorganic ingredients are mixed together and fired at high temperatures. As this is a man-made process, the desired sizes are easy to produce.
Ceramic ball bearings come in two classifications. The bearings can be either Full Ceramic Bearings or hybrid ceramic ball bearings. The ball bearings have two parts, an inner ring and an outer ring.
Ceramic ball bearings are made of 100% ceramic material. Hybrid ceramic ball bearings contain a steel center with the outer ring made with a ceramic substance.
Various kinds of ceramic materials are used. Two of the most popular are Si3N4 and Zr02. One mixture is a combination of silicon nitride ceramic material that is black and called Si3N4. This is the most popular. If white is desired, a mixture of zirconium dioxide (Zr02) is formed, also called zirconia or zirconium oxide. It is hard to tell a ball of Zr02 and a pearl apart, as the zirconia Ceramic ball bearing very closely resembles the pearl.
Although ceramic material is softer than steel, it also weights less and creates less friction. This mean Ceramic ball bearings move faster with less heat. In a high speed application this is very important.
For over 10 years, these wonderful ceramic ball bearings found many uses. The most common uses are in satellites, racing, especially formula 1 racing, turbines and tools especially designed for cutting.
Why? There are three reasons for the popularity of Ceramic ball bearings.
1. Thermal Expansion: Most materials change size when exposed to changes in temperatures. Steel expands and contracts 35% more than Ceramic ball bearings. Therefore Ceramic ball bearings work smoother and eliminate some of the vibration of other products.
2. Less Conductivity: Ceramic ball bearings do not conduct electricity. Unlike steel, Ceramic ball bearings do not oxidize or rust.
3. Weight Reduction: Steel weights about 40% more than silicon nitride ceramic balls. The lighter weight of Ceramic ball bearings is easier to speed up or slow down, especially at high speeds.
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8 Skateboard Extended Ceramic Bearings with Built-in Spacers Sale Price: $24.95  |
Description"8 Ceramic Skateboard Bearings With Extended inner race No Need for Spacers Set of 8 Ceramic skateboard Bearings with extended inner race, that will eliminate the use of spacers, you will get more rigid/smooth wheel set when you use these bearings, these bearings are sealed on one side (the outer side) with rubber seal, Bearings are made of Chrome Steel, these bearings have nylon cage to ensure the light weight and low friction, each bearing have One Rubber Seal to protect the bearing from dust or any possible contamination... |
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Sealed Si3N4 Ceramic Skateboard Bearing Stainless Steel ABEC-5 Ball Sale Price: $9.95 |
DescriptionSealed Ceramic Skateboard Bearing S608-2RS Ball Bearing 8x22x7 mm Sealed Bearings S608-2RS Bearing is stainless steel Sealed silicon nitride Ceramic Skateboard Bearing, double sealed, radial and deep groove ball bearings, S608-2RS bearing is made of Stainless Steel with Si3N4 Ceramic (Silicon Nitride) balls, S608-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination, It is ABEC-5 quality to ensure high speeds... |
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61908-2RS Bearing Hybrid Ceramic Sealed 40x62x12 Ball Bearings VXB Brand Sale Price: $54.95 |
Description61908-2RS Ceramic Hybrid C3 Ball Bearing Chrome Steel and Ceramic Balls One Bearing 6908-2RS Hybrid ceramic chrome steel sealed bearing with ZrO2 Ceramic Balls Electric motor quality, 6908-2RS Bearing is a popular size that could be used in many application that uses this size 40mm x 62mm x 12mm, bearing is closed with 2 Rubber Seals and double sealed, the bearing is one seal from each side to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease, 6908-2RS has industrial packaging... |
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Loose Ceramic Balls 6mm G10 ZrO2 Bearing Balls VXB Brand Sale Price: $1.65 |
DescriptionLoose Ball Bearings 6mm Ceramic Balls ZrO2 G10 One Ball Loose Ceramic Balls 6mm ZrO2 (zirconium Oxide), this is a popular size that could be used in many application that uses this size 6mm. Ball is made of Ceramic ZrO2 ... |
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Loose Ceramic Balls 3/16 ZrO2 Bearing Balls VXB Brand Sale Price: $0.99 |
DescriptionLoose Ball Bearings 3/16 inch Ceramic Balls ZrO2 One Ball Loose Ceramic Balls 3/16 inch ZrO2 (zirconium Oxide), this is a popular size that could be used in many Bicycle, or any application that uses this size 9/16 Inch... |
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