This product is a high-precision silicon nitride ceramic ball (Si₃N₄) designed for use in dental handpiece bearing systems. It serves as the key rolling element in high-speed turbine bearings, enabling stable operation under extreme rotational conditions up to 400,000–450,000 RPM.
Made from advanced engineering ceramic, the ball offers excellent wear resistance, low density, and superior performance in high-speed, high-temperature, and sterilization-intensive environments.
Product Properties
Downloads & Resources
| Resource Type | Link |
|---|---|
| Technical Data Sheet (TDS) | Silicon Nitride Ceramic Material Properties – SU0483 |
Product Details
This product is a high-precision silicon nitride ceramic ball (Si₃N₄) designed for use in dental handpiece bearing systems. It serves as the key rolling element in high-speed turbine bearings, enabling stable operation under extreme rotational conditions up to 400,000–450,000 RPM.
Made from advanced engineering ceramic, the ball offers excellent wear resistance, low density, and superior performance in high-speed, high-temperature, and sterilization-intensive environments.
Key Features & Advantages
Ultra-High Speed Capability
Suitable for dental turbine bearings operating at speeds up to 450,000 RPM, ensuring smooth and stable rotation.
Extreme Wear Resistance
Silicon nitride ceramic provides 5× higher hardness than steel, significantly improving service life compared to traditional steel balls.
Autoclave Sterilization Resistant
Withstands repeated 134°C high-pressure steam sterilization, as well as exposure to disinfectants, acids, and alkaline cleaning agents without corrosion.
Low Density & Low Vibration
Approximately 40% the density of steel, reducing centrifugal force and enabling quieter, more stable operation.
Low Friction & Self-Lubricating
Optimized surface properties allow low-oil or oil-free operation, reducing maintenance requirements.
Technical Specifications
- Material: Silicon Nitride (Si₃N₄)
- Color: Gray
- Diameter: φ1.0 mm
- Precision Grade: G5 / P4 (Dental Bearing Grade)
- Structure: Solid ceramic ball (no cage, no assembly)
- Application Speed: Up to 400,000–450,000 RPM (bearing system dependent)
Application
Used as the rolling element inside dental handpiece ceramic hybrid bearings, including:
- High-speed dental handpieces
- Implant handpieces
- Micro/surgical dental turbines
- OEM bearing replacement and maintenance parts
Shipping & Customs
Your order may require payment of import duties or other customs clearance fees. Please check the notifications from the logistics company or relevant parties and complete the payment in time to prevent the shipment from being returned.
Frequently Asked Questions
We supply alumina (Al2O3), aluminum nitride (AlN), boron nitride (BN), silicon nitride (Si3N4), zirconia (ZrO2) , beryllia ceramics (BeO), silicon carbide (SiC), boron carbide (B4C), porous ceramics, machinable glass ceramic parts, including crucibles, nozzles, shaft, piston, setter, washer, seals, cutting tool components, insulators, ceramic to metal sealing, metallized ceramics, ceramic heater, ceramic reflector and ceramic filling pump etc.
Key benefits include: extreme hardness, wear/corrosion resistance, high-temperature stability, electrical insulation, and bio-compatibility, ideal for harsh industrial environments.
Yes. We offer CNC machining, ceramic injection molding, cold isostatic pressing, hot pressing, dry pressing and casting to produce non-standard parts based on your drawings or samples.
Different products have different MOQ, if you have mass production in future, we can discuss MOQ again to meet your requirement.
Our products meet ISO 9001:2015 and IATF16949 standards. Material COA (Certificate of Analysis) and mechanical test reports (e.g., hardness, density, flexural strength) are available.
Standard tolerance is ISO2768-M. Precision machining can reach ±0.001mm (depending on material and design).
Standard parts: 1-7 days; Custom parts: 30-60 days (complex designs require additional evaluation).
We use two or three layer protection: shock-absorbing foam + reinforced cartons or shock-absorbing foam + individual blister boxes + reinforced cartons. Fragile labels are applied for delicate parts.
Yes. Provide your application conditions (temperature/medium/pressure/load), and our engineers will recommend the optimal material solution.
Report the issue within 7 days with photos/videos. Verified defects will be replaced or refunded at no cost.
Yes. Contact our email info@innovasupplies.com to get more details about offline orders. For corporate transfers, provide full company name and tax ID for VAT invoice issuance.
Yes, for large orders, we can discuss by offline through email.
Returns are accepted if:
– Received incorrect product model/specification
– Manufacturing defects (non-human damage)
– Unopened packaging & resalable condition (standard parts only)
Claims must be filed within 7 business days after delivery.
Custom orders are non-returnable (unless with critical defects) as they are produced specifically for you. Pre-shipment inspection reports will be provided for approval.
Tours by appointment only. Submit 3 days in advance: company name, visitor position, purpose. Note: Clean-rooms require protective gear.
If you have mass production in future, 1-5 free standard samples are available and you pay the freight cost, custom samples charged at cost.
Import duties, customs taxes and carrier brokerage fees are charged by customs authorities or the carrier when an international shipment enters your country. These charges are not set or collected by InnovaSupplies at checkout unless DDP shipping is explicitly specified.
Unless DDP shipping is explicitly specified, international orders are shipped under DAP terms. This means the buyer is responsible for paying any import duties, customs taxes, brokerage fees, storage fees, or other customs clearance charges after the shipment arrives.
If customs charges are not paid on time, the shipment may be delayed, returned, stored, or abandoned. Any resulting shipping, return, storage, customs, or handling costs will be the buyer’s responsibility. Refund eligibility may be reduced or denied for custom-made or non-resellable products.
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