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Silicon nitride deep groove ball bearing for high-temperature, high-speed, and harsh-environment applications.
The CE-6002-Si3N4-PTFE is a high-precision full ceramic deep groove ball bearing featuring Si₃N₄ (silicon nitride) rings and balls with a PTFE cage. Si₃N₄ bearings leverage silicon nitride's exceptional strength, thermal shock resistance, and low friction, making them ideal for high-speed, high-load, and extreme-temperature applications. They outperform steel in durability and efficiency and are widely used in aerospace, automotive, and precision machinery for superior performance.
With a standard envelope of 15 mm bore, 32 mm outside diameter and 9 mm width, this bearing is dimensionally interchangeable with standard 6002 steel bearings. The PTFE cage provides excellent chemical resistance and low friction, while the open (unsealed) design supports dry running and high-temperature operation. The bearing is suitable for applications where conventional grease lubrication is impractical or prohibited.
Need a CE-6002-Si3N4-PTFE bearing for your application?
Send TOJO your requirements for a technical evaluation and quotation.
| Parameter | Specification |
|---|---|
| Bearing No. | CE-6002-Si3N4-PTFE |
| Bearing Type | Deep Groove Ball Bearing (Full Ceramic) |
| Rings & Balls Material | Si₃N₄ (Silicon Nitride) |
| Cage Material | PTFE (Polytetrafluoroethylene) |
| Seal Type | Open (Unsealed) |
| Lubrication | Dry / Lubrication-Free |
| Bore Diameter (d) | 15 mm |
| Outside Diameter (D) | 32 mm |
| Width (B) | 9 mm |
| Chamfer Radius (r) | 0.3 mm |
| Reference Weight | ~13 g |
| Basic Dynamic Load Rating (Cr) | ~1.76 kN |
| Basic Static Load Rating (C0r) | ~0.96 kN |
| Maximum Speed (reference) | ~16,800 RPM (dry, open) |
| Temperature Range | -200°C to +180°C (PTFE cage limit) |
| Tolerance Class | ABEC-1 / P0 |
| Internal Clearance | CN (Standard) |
Silicon nitride offers exceptional strength, high hardness, and excellent thermal shock resistance. It is lighter than steel, electrically insulating, non-magnetic, and highly resistant to wear and corrosion.
Si₃N₄ maintains its mechanical properties at elevated temperatures where steel bearings would degrade. The PTFE cage enables reliable operation up to +180°C, with dry running capability.
Si₃N₄ is extremely resistant to acids, alkalis, and corrosive media. The PTFE cage further enhances chemical compatibility, making this bearing suitable for food-grade and chemical-processing environments.
Si₃N₄ is electrically insulating and non-magnetic, preventing arcing damage and electrolytic corrosion in electrical, semiconductor and precision equipment applications.
The low density of Si₃N₄ reduces centrifugal forces, enabling high rotational speeds. The open, dry-running design supports operation without grease or oil, reducing maintenance and contamination risks.
*Actual operating temperature and speed limits should be confirmed according to the complete bearing configuration and application conditions.
● Aerospace — actuators, turbine components, and flight control systems requiring lightweight, high-temperature stability and reliability.
● Automotive — electric vehicle motors, turbochargers, and fuel pumps demanding high-speed capability and corrosion resistance.
● Precision Machinery — high-speed spindles, machine tool bearings, and grinding spindles requiring high rigidity and accuracy.
● Chemical & Food Processing — pumps, agitators, and mixers exposed to aggressive chemicals, with food-grade compatibility.
● Semiconductor & Cleanroom — vacuum robots, wafer handling, and precision equipment requiring non-magnetic and non-conductive components.
● High-Temperature Equipment — furnaces, kilns, and heat-treatment lines where conventional lubricants fail.
TOJO BEARING COMPANY specializes in special-material bearing development, manufacturing and application support. Application-specific solutions can be evaluated according to:
Bearing dimensions
Ceramic material
Cage material
Lubrication
Radial clearance
Precision grade
Seal type
Temperature
Speed
If the standard CE-6002-Si3N4-PTFE configuration does not meet your requirements, send TOJO your operating conditions and bearing specifications for evaluation.
The bearing has a 15 mm bore, 32 mm outside diameter and 9 mm width, with a reference weight of approximately 13 g.
Si₃N₄ (silicon nitride) offers higher hardness, better thermal shock resistance, and lower density, making it preferred for high-speed and high-temperature applications. ZrO₂ (zirconia) offers higher fracture toughness and is often chosen for corrosive environments.
This bearing is supplied in a dry (lubrication-free) condition. The open design and PTFE cage support operation without grease or oil in many applications, particularly in vacuum, cleanroom, and high-temperature environments.
Yes. TOJO can evaluate material, dimensions, cage type, lubrication, precision and operating-environment requirements.
Looking for a CE-6002-Si3N4-PTFE Full Ceramic Bearing? Send us your:
● Required quantity
● Application
● Speed
● Radial and axial load
● Operating temperature
● Lubrication conditions
● Environmental requirements
● Precision requirements
TOJO engineers can evaluate your application and recommend a suitable Si₃N₄ ceramic bearing configuration.
TOJO BEARING COMPANY — Our Bearings, Your Solutions.
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