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Your Professional Bearings Supplier

Henan Deqin New Material Co., Ltd. specializes in the R&D and manufacturing of PDC cutters for oil & gas drilling, mining, and construction applications. The company operates dedicated production lines and modern factory facilities supported by advanced manufacturing and inspection systems. Core equipment includes high-pressure synthesis machines, Scanning Electron Microscopes (SEM), Energy Dispersive Spectrometers (EDS), and X-ray Diffractometers (XRD), ensuring reliable quality control and product consistency. With strong technical expertise and continuous process improvement, DQ provides dependable PDC solutions for global industrial customers.

PCD Thrust Bearings
1.Extremely low friction coefficient. 2.High material hardness and wear and corrosion resistance. 3.Unique design significantly improves wear resistance and lifespan. 4.Suitable for extreme working
PCD Combination Bearing
1.Extremely low friction coefficient. 2.High material hardness and wear and corrosion resistance. 3.Unique design significantly improves wear resistance and lifespan. 4.Suitable for extreme working
PCD Radial Bearings
1.Extremely low friction coefficient. 2.High material hardness and wear and corrosion resistance. 3.Unique design significantly improves wear resistance and lifespan. 4.Suitable for extreme working

Why Choose Us

Our Certificate

Our products have passed ISO9001 certification in 2016, ensuring standardized production and reliable quality management.

Quality Control

A full end-to-end quality control system is applied from raw material analysis to final inspection. Multiple performance tests ensure stable and dependable PDC quality.

Sales Market

Our products are exported to the United States, Canada, Russia, Germany, Australia, and South Korea. Long-term cooperation reflects stable quality and trusted service.

OEM & ODM Capability

Our provides flexible OEM and ODM services based on customer requirements. Strong manufacturing experience supports customized PDC solutions and efficient technical communication.

Bearings

Diamond bearings are mainly composed of PDC cutters. PDC cutters (Polycrystalline Diamond Composite) consist of a polycrystalline diamond layer sintered with tungsten carbide substrate under ultra-high temperature and pressure.

Polycrystalline diamond is an extremely wear-resistant material that can be used to protect drilling tool components from abrasive wear caused by contact between the exterior of the tool and the borehole wall.

Grade	WC%	Co/Ni%	Physical and mechanical properties			Grain size μm
Grade	WC%	Co/Ni%	Density g/cm3	TRS N/mm2	Hardness HRA	Grain size μm
YG01	100	0	15.3-15.5	1200	95.5	0.3
YG04X	96	4	15.0-15.2	1600	92.8	0.8-1.0
YG06	94	6	14.8-15.1	2500	90.0	1.2
YG06X	94	6	14.8-15.1	2400	91.5	1.0
YG06A	94	6	14.8-15.1	2150	92.5	0.6-0.8
YG08	92	8	14.6-14.9	2700	89.0	1.2-1.6
YG10.2	90	10	14.3-14.6	3800	91.8	0.7
YG10X	90	10	14.3-14.6	4000	92.2	0.6
YG11	89	11	14.3-14.7	2800	88.5	1.2-1.6
YG12X	88	12	14.2-14.5	3000	89.5	1.0-1.2
YG15	85	15	13.8-14.2	3000	86.5	1.2-1.6
YG15X	85	15	13.8-14.2	4500	89.0	0.7
YG20	80	20	13.4-13.8	3100	85.0	1.0
YN06	94	6	14.5-14.9	2000	90.0	1.2
YN09	91	9	14.3-14.6	2300	89.0	1.2-1.6
YN11	89	11	14.0-14.3	2600	88.0	1.2

Advantages of Bearings

High Load: Can operate effectively at a fairly high speed and load range.

For example: In some oil and gas drilling, diamond bearings can operate 100-6000 rpm at loads up to 60,000 lbs.

Wear-resistant and high-temperature resistant: Diamond material has an extremely low friction coefficient (friction coefficient is between 0.01 and 0.03) and can operate at high temperatures (the current maximum temperature is 233°C)

High fracture toughness: Bearing materials with excellent fracture toughness reduces the likelihood of damage due to impact loads

High corrosion resistance: Not affected by corrosive substances in the application environment, for example, not affected by natural or mud chemicals present in drilling

Simplification: Diamond bearings do not need to be specially lubricated during use.
Since seals and independent lubrication systems are not required, equipment and components can be simplified.

Long life: Because the diamond surface is hard and wear-resistant, it can extend the life of the bearing.

Type of Bearings

Angular Contact PCD Bearings
Angular contact PCD bearings are made such that the balls are packed at an angle to the bearing axis. This angle makes them ideal for supporting simultaneous radial and axial loads. These becaomes a preferable choice when high load-carrying capacity is needed.

Self-Aligning PCD Bearings
Self-alignong PCD bearings provide two rows of balls and a common spherical raceway. The unique design enables such bearing to accomodate misalignment and thus improves its own flexibility. These bearings are good when used in applications where shaft misalignment or bending may occur.

Cylindrical PCD Bearings
PCD steel bearings possess independently supporte, raial and axial loads only. Their design allows for easy operation. These bearings are used in applications requiring high radial loads and canbe found in sliding units and hydraulic cylinders.

Tapered PCD Bearings
Tapered PCD bearings are constructed in such a way that the inner ring permits axial and radial loads with the tapered outer ring. This is good impact resistance and load capacity.

Spherical PCD Bearings
Such bearings are designed with an inner ring and an outer ring with a spherical race. The structure thus enables these bearings to accommodate misalignment and thus provides flexibility.

Thrust PCD Bearings
Thrust PCD bearings are intended to support axial loads alone. These bearings can be utilized in combination with radial bearings to accommodate specific load directions.

Applications of Bearings

Mining and excavation operations
In these operations, PCD bearings are used in various machinery like rigid frame trucks, shovels, excavators, drill rigs, crushers, and conveyor belts. The machined and welded components of these machines used for excavation, material handling, and transportation of the ores and rocks are toughly built with structural steel. The hydraulic system and some high friction areas also need to be sturdy.

Oil and gas industry
The oil and gas industry involves extraction, drilling, transportation, and processing of minerals and other valuable works. This industry also features lots of heavy-duty machinery and equipment that work under high pressure and temperature. For this industry, PCD bearings are utilized in drilling rigs, pumps, compressors, pipeline, and safety gate valve. Since PCD bearings have high wear and corrosion resistance, they are suitable for use in this industry.

Agriculture and forest industries
PCD bearings are found suitable for agricultural and forestry machinery as they have high durability and long lifespan. In these industries, they are used in rigid frame trucks, harvesters, and other farming-related equipment.

Construction industry
This is another industry that heavily relies on the usage of PCD bearings in several of its machines. In these industries, PCD bearings are used in excavators, loaders, cement mixers, dump trucks, cranes, and more.

Renewable energy industry
The renewable energy industries include wind farms, solar panel manufacturers, and electrolysis hydrogen production companies. PCD bearings are used in wind turbines, electrolysers, and other related equipment used in these industries.

How to choose bearings

Load capacity: Consider bearing's load capacity. It is important to consider the radial and axial loads that the bearing will encounter. A right bearing should carry these loads without having any unnecessary deformations or failures.

Speed rating: Speed ratings are crucial especially when the equipment is rotating. Select a bearing that will effectively work at the speed of operation required, be it high or low. The speed rating of bearings will help you know its suitability bearing for centrifugal applications.

Material: PCD bearings are usually constructed from a variety of materials, each having their own advantages. For instance steel will offer good strength and is machined easily. Some have chrome plating for corrosion resistance. Some PCD bearings are constructed from ceramic materials for more hardness and thermal resistance.

Lubrication: The factor of lubrication will affect bearing's performance and lifespan. Find out how much lubrication the bearings will need and what type of lubricant should be used. Some measurements use self-lubricating materials that will require little or no maintenance at all while others have to be greased or oiled regularly.

Compatibility: Some PCD bearings are appropriate for their mounting and fitting with other components in the machinery. Find out for size, tolerances and the interface between the bearing and the elements.

Manufacturing Process of Bearings

Manufacturing a PCD bearing begins with selecting diamond grit (usually 2–30 µm) and mixing it with a cobalt-based binder. This mixture is placed on a tungsten carbide disc and subjected to temperatures of 1,300–1,500 °C and pressures of 5–7 GPa – conditions that mimic natural diamond formation. After sintering, the PCD blank is laser‑cut or electrical discharge machined (EDM) into complex shapes: small pads, arcs, or full rings. Each piece is then precision ground to surface flatness and roughness tolerances measured in microns. Finally, the PCD segments are brazed into steel carriers using high‑temperature brazing alloys, followed by 100% non‑destructive inspection (ultrasonic or X‑ray) to verify bond integrity.

Maintenance

Keep Fluid Clean

Use clean, filtered water-based fluid to reduce wear and prevent blockage.

Avoid Impact

Do not drop or hit PCD bearings, as cracks or chips may cause failure.

Inspect Regularly

Check for cracks, scratches, discoloration, or diamond layer loss after use.

Check Wear Size

Measure bearing dimensions; excessive wear or deformation means replacement is needed.

Store Carefully

Keep bearings clean, dry, and protected from contact or scratches.

Ensure Proper Lubrication

PCD bearings need water-based fluid for lubrication. Avoid dry running or pure oil.

FAQ

Q: Can PCD bearings be used in hostile environments?

A: Definitely. PCD bearings have high corrosion resistance. Apart from that, they also have high thermal conductivity, high precision, and high impact resistance. Therefore, they are fit for long-term operation in chemically aggressive or electrically conductive environments as well as high temperature.

Q: How do PCD bearings compare to traditional steel bearings in terms of lifespan?

A: PCD bearings have much longer lifespans than traditional steel bearings. This is chiefly because of their excellent wear resistance, corrosion resistance, thermal conductivity, and impact resistance. Thus, they operate effectively in tough and extreme conditions. Hence require less maintenance, unlike traditional steel bearings.

Q: What are the common causes of failure in PCD bearings?

A: Wear and tear is the commonest cause of failure in PCD bearings. Other causes of failure include insufficient lubrication, exposure to an environment where there is thermal shock, misalignment, and human error. Moreover, bearing overload contributes a lot to the occurrence of PCD bearing failure.

Q: How can the performance of PCD bearings be maximized?

A: One can maximize the performance of PCD bearings by implementing proper maintenance regime. This entails regular inspection, lubrication, monitoring loads, and ensuring proper alignment. These activities not only ensure the longevity of the bearings, but enable them to operate optimally through their entire life.

Q: What is your payment terms ?

A: T/T 100% in advance Or 60% deposit, 40% before shipment. Negotiable based on customers' credibility and order amount.

As one of the most professional bearings manufacturers in China, our products have good reputation in the market. Please feel free to buy high quality bearings for sale here from our factory. For price consultation, contact us.

bearings, pdc bearings