High Quality High Temperature Corrosion Resistance Full Ceramic Ball Bearing

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Product Description

High quality ceramic ball bearing

Ceramic microstructures enjoy covalent bonding inherent between non-metal elements. This means they share electrons. This atomic co-operation yields a very strong attraction force and because of this, ceramics offer a series of benefits in comparison to metals.
* They normally have a very high hardness (70-90 HRc) and elastic, or Young's, modulus. This means they are resistant to shape change when loads are applied along with improved wear characteristics.
* Ceramic bearings can run lubrication free. This is because ceramic materials don't micro-weld. Micro-welding happens, typically with metals, when the surface imperfections on the rolling element and raceway interact with one another causing an electric arc. This degrades the surface and substantially reduces the bearing life. Ceramic materials do not have this issue which makes them suitable for various applications which require a lube-free environment.
* They usually behave in a stable manner at high temperatures meaning there is less thermal expansion. It takes a great deal more energy to increase the bond length of a covalent bond in comparison to a metallic ionic bond.
* Ceramics are non-metallic, nonferrous materials. They don't corrode in the same way as metals when exposed to water and other hazardous chemicals. Their high degree of corrosion resistance allows them to perform excellently in wet and chemically-corrosive environments.
* Many engineering ceramics also have a low density leading to improvements in bearings' operational speeds, which is due to low centripetal forces and reduced friction.
* Due to the lack of free electrons in most ceramics, they are non-magnetic and excellent insulators.

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Bearing model	Ceramic ball bearing 6902
Size(mm)	15x28x7mm
Material	Zirconia
Sealed type	Open/RS
Precision	ABEC-1
Noise level	Z1v1

Q: Are you trading company or manufacturer ? A: Our group consists in 3 factories and 2 abroad sales corporations. Q: Do you provide samples ? is it free or extra ? A: Yes, we could offer the sample for free charge but do not pay the cost of freight. Q: How long is your delivery time ? What is your terms of payment ? A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shippment. Q: What is the exact MOQ or price for your product ? A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation. If you have another question, please feel free to contact us.

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