PEEK Deep-Groove Ball Bearings
Product Overview
PEEK Deep-Groove Ball Bearings is a high-performance engineering plastic bearing manufactured from premium Polyetheretherketone (PEEK). It is designed for demanding industrial environments requiring high temperature resistance, chemical corrosion resistance, electrical insulation, and non-magnetic performance.
The bearing consists of PEEK inner ring, outer ring, and cage, combined with high-performance ceramic or glass rolling balls. It provides stable rotation performance in environments where metal bearings are prone to corrosion, electrical conduction, or magnetic interference.
Typical applications include chemical processing equipment, high-temperature automation systems, laboratory instruments, semiconductor-related equipment, and electrical insulation assemblies.
Material Description – PEEK Engineering Polymer
PEEK (Polyetheretherketone) is a high-performance semi-crystalline thermoplastic widely used in aerospace, chemical engineering, and precision machinery due to its excellent mechanical and thermal stability.
Compared with standard engineering plastics such as PP and POM, PEEK offers significantly higher mechanical strength and rigidity, temperature resistance, chemical stability, radiation resistance, and dimensional stability under load.
Key Performance Advantages
High Mechanical Strength & Dimensional Stability
PEEK material provides excellent tensile strength, creep resistance, and fatigue resistance. It maintains stable performance under continuous load and rotational conditions, making it suitable for precision mechanical systems and long-life applications.
Self-Lubricating & Maintenance-Free Operation
The bearing uses PEEK material with inherent low-friction properties, eliminating the need for additional grease or oil lubrication. Optional rolling elements include zirconia ceramic balls (standard), silicon nitride ceramic balls (higher speed & wear resistance), and silicon carbide ceramic balls (special chemical and thermal environments). This design reduces contamination risk in clean and sealed systems.
High Temperature Resistance (Up to ~250°C Class)
PEEK bearings are suitable for long-term service in elevated temperature environments up to approximately 250°C class (depending on load and system design conditions). They maintain structural integrity in thermal processing equipment, high-temperature automation systems, and heat exposure testing devices.
Note: Long-term operation beyond recommended thermal limits may accelerate material aging.
Excellent Chemical Resistance
PEEK exhibits strong resistance to most acids, alkalis, hydrocarbons, oils, and industrial cleaning agents. It is suitable for chemical processing systems, fluid transfer pipelines, and laboratory chemical equipment.
However, it is not resistant to strong oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid.
Electrical Insulation & Non-Magnetic Performance
PEEK is a naturally insulating polymer. Combined with ceramic rolling elements, the bearing provides electrical insulation, non-magnetic behavior, and resistance to electromagnetic interference. It is suitable for sensitive electronic systems, testing instruments, and high-voltage insulation assemblies.
Low Noise & Smooth Operation
The precision-molded PEEK cage structure reduces vibration and noise during operation, ensuring smooth rotation and stable mechanical behavior in low-load applications.
Electrical insulation is a defining characteristic of PEEK bearings. Unlike metal bearings that can create unwanted conductive paths, the PEEK polymer combined with ceramic rolling elements ensures complete galvanic isolation. This makes these bearings ideal for motor shafts, generator assemblies, and any rotating equipment where stray currents could cause bearing damage or sensor interference.
In semiconductor manufacturing equipment and precision measurement instruments, the non-magnetic property of PEEK bearings eliminates magnetic field distortion, ensuring accurate readings and uninterrupted operation in magnetically sensitive environments.
Quiet operation is achieved through the precision-molded PEEK cage structure that inherently dampens vibration. The self-lubricating nature of PEEK eliminates the need for grease, which can cause inconsistent noise levels as lubricant degrades over time. In laboratory and medical device applications where acoustic performance is critical, these bearings deliver consistently smooth and silent rotation.
The combination of low-friction PEEK material and perfectly spherical ceramic rolling elements minimizes micro-vibrations, contributing to extended equipment lifespan and improved process stability in sensitive instrumentation.
Bearing Structure
- Inner / Outer Rings: High-performance PEEK polymer, precision-machined for consistent geometry and smooth raceway surfaces.
- Cage: Integrated PEEK injection-molded structure, designed for uniform ball spacing and reduced friction during high-speed rotation.
- Rolling Elements: Ceramic balls — zirconia (standard high-performance option), silicon nitride (higher speed & wear resistance), or silicon carbide (special chemical and thermal environments) are available.
The all-PEEK cage combined with ceramic rolling elements creates a completely metal-free bearing assembly, ideal for applications where metallic contamination must be avoided. Each component is manufactured to tight tolerances, ensuring consistent performance across the full bearing series.
Application Limitations
PEEK plastic bearings are designed for light to medium load applications. They are not recommended for:
PEEK Bearing Size Selection Table
Select a bearing type, series and model to confirm the main dimensions: bore diameter (d), outside diameter (D) and width (B). To keep this section compact, detailed size rows are not expanded by default. Choose a category, series, model, or use quick search to display matching specifications.
Select a PEEK bearing category
Detailed model dimensions will appear after you select a type, series, model, or enter a search keyword.
Dimension unit: mm. Width values such as 2/3, 2.5/4 or 3/5 indicate optional width versions. Please confirm required width, ball material, cage design, temperature condition and quantity when sending your RFQ.
| Type | Series | Model | d Bore | D Outside | B Width | RFQ |
|---|
Application Industries
PEEK Deep Groove Ball Bearings are widely used in:
Typical Industrial Challenges Solved
- Prevents corrosion and seizure in chemical environments
- Eliminates lubrication contamination in clean systems
- Reduces electrical and magnetic interference issues
- Improves stability under elevated temperature conditions
- Extends service life in corrosive or humid environments
- Reduces maintenance frequency and downtime
Why Choose DISLAB Precision
DISLAB Precision is a global supplier of industrial precision components, including fasteners, spacers, standoffs, and custom-engineered parts. With a network of 300+ manufacturing partners, we ensure stable production capacity and consistent quality across both prototyping and mass production.
All products undergo strict quality inspection covering material verification, dimensional accuracy, and surface quality control before shipment. Our engineering team of 40+ specialists provides technical support, bearing product options, and tailored manufacturing solutions for global industrial customers.
From sample development to mass production delivery, we support your project at every stage. Our product portfolio also includes POM plastic pillow block bearings and PP plastic ball bearings for industrial fluid handling systems.
Frequently Asked Questions (FAQ)
Q1: What is the maximum working temperature of PEEK bearings?
PEEK bearings are suitable for continuous use in elevated temperature environments up to approximately 250°C depending on application conditions.
Q2: Can it be used in chemical environments?
Yes. It resists most acids, alkalis, oils, and solvents, but not strong oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid.
Q3: Does it require lubrication?
No. It is self-lubricating and does not require grease or oil, reducing contamination risk in clean environments.
Q4: Can rolling elements be customized?
Yes. Ceramic ball materials such as zirconia, silicon nitride, and silicon carbide are available to suit different application requirements.
Q5: Is it suitable for high-load applications?
It is designed for light to medium load conditions only. For heavy-duty applications, please consult our engineering team for alternative solutions.
Q6: Can it be used in electrical equipment?
Yes. It provides excellent insulation and non-magnetic performance, making it ideal for motors, generators, and sensitive electronic assemblies.
Direct Contact Channels
- One-stop service: design, customization, production, and global delivery
- OEM/ODM solutions for industrial and export-oriented buyers
