Founded in 1995 and as a member of China National Crane Conveyor Machinery Association, China Chuanda Conveyor Belt Co., Ltd. is a specialized ceramic bearing manufacturer and custom ceramic bearings designer of various kinds of conveyors, belts, pulleys, bearings, rollers, bushings and so on. Through modern scientific management, excelsior products and technological design, advanced production tools and strict testing methods, we have produced various types of conveyance equipment. In 2001, we were certified by ISO9001: 2000, which has ensured the reliability and stability of product quality. Also, we have passed Germany DQS authentication in the domestic same trade. We have established long-term relationships with some famous mechanical manufacturers both at home and abroad, such as Veit GmbH, Hashima, Oshima, Summit, and KDK companies.

Accelerate faster, Roll farther and faster, Resist dirt and moisture better.
Outlast the races, allowing them to be reused in most cases
Pre-lubricated with Speed Cream? racing lubricant
Bones Bearings products have a lifetime warranty which protects them against manufacturing defects.
Bones Swiss Labyrinth Ceramics are in a class by themselves. If you want the best skateboard bearing there is, this is it. The Ceramic balls are much lighter, harder, stronger, waterproof, and longer lasting than the finest steel balls.
The self-lubricating (Rulon J lined) bearing is recommended for use with soft shafting, including cold rolled steel, aluminum, and 300 series stainless steel. These unique bearings perform well under vacuum conditions and their durable coating is non-tox

The Aluminum Oxide coating linear motion bearing has an extremely low coefficient of friction - even lower than Teflon bearings - to prevent shaft wear and galling. These bearings, totally interchangeable with rolling element equivalents, allow line-to-li
A few years ago, NASA engineers realized that the metal alloy bearings being used in the U.S. Space Shuttle's main engine were operating dangerously close to their upper temperature limits and were wearing out quickly. The natural replacement would be bearings made of silicon nitride - if the ceramic bearings could be reliably tested and shown to be entirely free of flaws.
Ceramics such as silicon nitride are very hard, very forgiving of high temperatures, and have a low coefficient of expansion. But they are inherently brittle. When ceramic balls fail, they fail suddenly and without warning.

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