US Synthetic Bearings Site


Diamond as a Bearing Material

Polycrystalline diamond is known for its high thermal conductivity, low coefficient of friction, high toughness and other preferred physical and mechanical properties. Having a bearing material with high thermal conductivity reduces localized temperature extremes that lead to bearing degradation.

Diamond as a Bearing Material

Research

Engineering Bearing

The performance of our bearings are the result of extensive Research and Development (R&D) conducted by US Synthetic engineering teams. Our research staff consists of professionals with advanced degrees in engineering, chemistry, and materials design. With more 30 years of diamond-engineering experience, US Synthetic has worked hard to deliver advanced PCD material and new and better ways of building custom bearings and components for our customers. 

Our R&D department focuses on:

What is PCD?

Polycrystalline Diamond (PCD) is diamond grit that has been fused together under high-pressure, high-temperature conditions in the presence of a catalytic metal.  The extreme hardness, wear resistance, and thermal conductivity of diamond make it an ideal material for bearings. Individual diamond crystals cleave quite easily when struck parallel to certain planes (the process used to facet diamond gemstones takes advantage of these relatively weak planes).

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Diamond as a Bearing Material

Polycrystalline diamond is known for its high thermal conductivity, low coefficient of friction, high toughness and other preferred physical and mechanical properties. Having a bearing material with high thermal conductivity reduces localized temperature extremes that lead to bearing degradation.

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Diamond Bearing Technology

Diamond bearings utilize Polycrystalline diamond (PCD) in their primary working surfaces. In general, bearings allow relative movement or rotation of two machine elements with respect to one another while minimizing heat generation and maintaining alignment between the respective machine elements.

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Diamond Bearing Tribology Fundamentals

Tribology comes from the Greek word ‘tribos’ which means ‘rubbing’.  It is a relatively new science that considers the friction, wear and lubrication at moving contacts.  Diamond bearing tribology looks at the physics between two diamond surfaces moving relative to one another, most of the time in the presence of a lubricant.

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PCD Development

The PCD compacts used in our bearings are subjected to rigorous testing to ensure that they meet the needs of our customers.  Impact and tensile strength, abrasion resistance, and thermal stability are evaluated in our state-of-the-art testing facility.  Field tests are also conducted to validate laboratory data.

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PCD Bearing Research

To ensure product quality is met, our engineering teams do extensive, rigorous testing in our in-house bearing testing facility. This ensures that the best products are developed for our customers, through extensive testing and evaluation.

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