| Customization: | Available |
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| After-sales Service: | 6 Months |
| Warranty: | 6 Months |
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PDC bearings are very wear-resistant, compared with traditional tungsten carbide bearings or other cemented carbide bearings, the service life is 4-10 times longer depending on different operating conditions. PDC bearings utilizes brazing process to form radial or thrust bearings, which enables them to be used in mud motors and turbines, thereby extending tool life and improving tool stability and reliability.
PDC Thrust bearings ensure that parallelism, surface finish and quality meet your requirements.
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Features of PDC Thrust Bearings |
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Parallelism |
Flatness |
Tension Strength |
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Max. 0.02mm |
Max. 0.01mm |
200MPa Min. |
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Features of PDC Radial Bearings |
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Coaxiality |
Concentric |
Roundness |
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Max. 0.05mm |
Max. 0.05mm |
Max. 0.05mm |
PDC (Polycrystalline Diamond Compact) bearings are divided into thrust bearings and radial bearings, widely used in the oil and gas drilling industry. Both PDC thrust bearings and radial bearings are composed of a series of components, with PDC welded to a steel carrier ring through brazing.
A PDC bearing assembly typically includes a rotating bearing ring and a stationary bearing ring, which are positioned opposite each other. In a PDC thrust bearing, the PDC surface on the inner diameter of one ring directly contacts the PDC surface on the outer diameter of the mating ring; similarly, in a PDC radial bearing, the PDC surface on the inner diameter of one ring directly contacts the PDC surface on the outer diameter of the mating ring.
During operation, the PDC surfaces on these rings rub against each other, but due to the high hardness and low friction coefficient of the PDC material, this friction is very low, enhancing the wear resistance and service life of the bearings.
In some applications, such as rotary steerable systems, where PDC bearings need to withstand both thrust and radial loads, thrust and radial bearings can be integrated into a single bearing unit to provide a more compact bearing assembly, that is to say, PDC combination bearing.
The service life of PDC bearings ranges from 1,000 hours to several years, depending on the application.
Oil and Gas Industry: Tungsten carbide bearings are often used in drilling and pumping equipment, where they help reduce wear caused by the high friction of rotating parts in abrasive environments. They are particularly beneficial in downhole tools and high-pressure pumps.
Mining and Drilling: In mining operations, where equipment is exposed to abrasive materials and extreme conditions, tungsten carbide bearings are used in drill bits, rock crushers, and other mining machinery to ensure extended service life and reliability.
Aerospace: In the aerospace industry, tungsten carbide radial bearings are used in various components such as turbines, actuators, and fuel systems, where their high load capacity and ability to withstand high temperatures and pressures are critical.
Heavy Machinery: In large industrial machinery, such as manufacturing equipment, turbines, and heavy-duty pumps, tungsten carbide bearings help reduce maintenance intervals and improve overall machine performance in high-stress, high-speed environments.
Chemical and Pharmaceutical Industries: Tungsten carbide bearings are often used in pumps and mixers that handle corrosive or abrasive chemicals. The bearing's resistance to wear and corrosion helps keep equipment running efficiently over longer periods, even under challenging conditions.
Automotive and Performance Engines: In high-performance or heavy-duty engines, tungsten carbide bearings may be used in turbochargers, transmissions, and superchargers, where durability and resistance to friction are vital for performance and longevity.
High thermal conductivity: The PDC material reduces the local limit temperatures that lead to bearing degradation and prevents damage to the bearing material caused by the high heat
High load: They can operate effectively over a wide range of speeds and loads. For example, in some oil and gas drilling, diamond bearings can operate at loads of up to 60,000 pounds at 100-6,000 rpm
Wear resistance and heat resistance: The PDC material has an extremely low coefficient of friction (coefficient of friction between 0.01 and 0.03). It can operate under the temperature up to 233 centigrade
High fracture toughness: Bearing materials with excellent fracture toughness reduce the likelihood of damage caused by shock loads
Corrosion resistance: They can be unaffected by corrosive substances in the application environment
Simplicity: There is no need for specialized lubrication during use, simplifying equipment and components by eliminating the need for seals and separate lubrication systems
Long life: The service life is 1000 hours to many years, which is more than 6 times longer than that of traditional tungsten carbide (WC) bearings
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