There are usually three kinds of PDC (polycrystalline diamond compact) bearings: thrust bearing, radial bearing and combination bearing. PDC bearing is necessary for harsh environments, which is applied in turbo drills, mud motors, electric submersible pumps, RSS (rotary steerable system), oil field operations, etc.
There are usually three kinds of PDC (polycrystalline diamond compact) bearings: thrust bearing, radial bearing and combination bearing. PDC bearing is necessary for harsh environments, which is applied in turbo drills, mud motors, electric submersible pumps, RSS (rotary steerable system), oil field operations, etc.
Wear resistance Heat resistance Corrosion resistance High load Longer life
| Item | Specification |
|---|---|
| Product Name | PDC Radial Bearing |
| Material | Polycrystalline Diamond Compact (PDC) + Tungsten Carbide Substrate |
| Bearing Type | Radial Bearing |
| Lubrication Method | Mud Lubricated / Fluid Lubricated |
| Coefficient of Friction | 0.01 – 0.03 |
| Maximum Operating Temperature | 233°C (451°F) |
| Maximum Radial Load Capacity | Up to 60,000 lbs (27 tons) |
| Operating Speed Range | 100 – 6,000 RPM |
| Wear Resistance | More than 6 times longer than conventional tungsten carbide bearings |
| Impact Resistance | Excellent |
| Corrosion Resistance | Excellent |
| Thermal Conductivity | Excellent |
| Service Life | More than 1,000 operating hours (depending on application) |
| Maintenance Requirement | Low Maintenance Design |
| Compatible Fluids | Water-Based Mud, Oil-Based Mud, Abrasive Drilling Fluids |
| Installation Type | Press Fit / Mechanical Retention |
| Available Sizes | Customizable |
| PDC Layer Thickness | 2 – 6 mm (Custom Available) |
| PDC Cutter Diameter | Ø8 – Ø25 mm (Custom Available) |
| Suitable Well Types | Vertical, Directional and Horizontal Wells |
| Suitable Operating Conditions | High Temperature, High Pressure and Abrasive Environments |
Typical Dimensions (Customizable)
| Model | Outer Diameter (OD) mm | Inner Diameter (ID) mm | Length (L) mm |
|---|---|---|---|
| PRB-50 | 50 | 30 | 40 |
| PRB-60 | 60 | 40 | 50 |
| PRB-80 | 80 | 50 | 60 |
| PRB-100 | 100 | 60 | 80 |
| PRB-120 | 120 | 80 | 100 |
| PRB-150 | 150 | 100 | 120 |
Efficient Heat Dissipation: High thermal conductivity cuts local peak temperature to prevent thermal damage to bearing components.
Wide Load & Speed Compatibility: Stably runs under varied working conditions, supporting max 60,000 lbs load at 100–6,000 rpm for oil & gas drilling.
Low Friction & Heat Endurance: Ultra-low friction coefficient of 0.01–0.03, with stable performance under temperatures up to 233°C.
Strong Shock & Corrosion Resistance: Great fracture toughness avoids impact damage; immune to corrosive media in complex working environments.
Simplified Structure & Extended Service Life: No dedicated lubrication, seals or auxiliary lubricating systems required; service life exceeds tungsten carbide bearings by over 6 times.
Why Polycrystalline diamond compact (PDC) bearings?
Abrasive particles, high temperatures, corrosive chemicals, and high loads can all contribute to a failure in rotating equipment.
PDC bearings improve overall bearing reliability in harsh conditions while eliminating the need for seals.
PDC is not a diamond coating, but instead it is a thick, manmade diamond surface that is ideally suited for operation in process fluids where abrasive particles, like sand, can cause accelerated wear and failure with traditional bearing materials.
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