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In down-hole drilling tools, large thrust loads can result from drilling and from the hydraulic loading caused by drilling mud flowing through tool components. US Synthetic PCD bearings provide a high-performance alternative to conventional bearings. PCD bearings are virtually impervious to abrasive particles in the drilling mud that often cause ball bearings to wear out more quickly.Thrust Bearings
Polycrystalline Diamond (PCD) radial bearings are comprised of a series of PCD inserts assembled (usually by brazing) in carrier rings. A typical PCD radial bearing set includes a rotating and stationary bearing ring. These two rings oppose each other with the PCD surface on the inside diameter of one ring in direct contact with the PCD surface on the outside diameter of the mating ring.
US Synthetic Bearings prides itself in its ability to precisely shape polycrystalline diamond. This has allowed Bearings to provide PCD radial bearings that have accurate diameters, tight clearance tolerances, and ultra-fine surface finishes.
During operation, the PCD surfaces of the rotating and stationary rings rub against each other. This rubbing contact exhibits very low friction (typically between 0.05 and 0.07).
The ultra-high hardness and strength of PCD allows USS Bearings' radial bearings to sustain very high loads during operation. In addition, they wear at a very low rate, resulting in the PCD bearings lasting from 1000 hours to many years, depending on the application. These PCD inserts also utilize the highest quality steel grade available.
PCD radial bearings are ideally suited for process-fluid-lubricated applications, particularly those where abrasive particles are present in the fluid. The PCD surfaces maintain their geometry and exhibit minimal wear in the presence of these abrasive-laden fluids.
US Synthetic Bearings' radial bearings are custom designed for each application. The Bearings' engineering team can create a specific design for your application and provide performance estimates for its bearings in that application. Contact us for more information.