50 – 1/4" (0.25") Grade 5 Silicon Nitride (Si₃N₄) Ceramic Balls
High Precision | Ultra-Durable | Frictionless Performance
Step into the future of precision engineering with this 50-pack of Grade 5 Si₃N₄ ceramic balls, meticulously designed for maximum performance in high-speed, high-load, and high-precision environments. Measuring 1/4" (6.35 mm) in diameter, these ceramic balls deliver industry-leading roundness, low friction, and exceptional wear resistance — significantly outperforming traditional steel components.
Whether you're upgrading cycling components, building high-RPM industrial machinery, or optimizing aerospace systems, these ceramic balls are your go-to solution for friction reduction, weight savings, and mechanical reliability.
⚙️ Technical Highlights:
Material: Silicon Nitride (Si₃N₄) — advanced ceramic with unmatched durability
Size: 1/4" (0.25" or 6.35 mm)
Grade: G5 (tolerance ±0.000005") for near-perfect sphericity
Hardness: ~1550 HV — significantly harder than steel
Weight: 60% lighter than stainless steel equivalents
Thermal Resistance: Withstands up to 1000°C without deformation
Corrosion Resistance: Chemically inert, non-magnetic, and completely rust-proof
Finish: Ultra-smooth surface for reduced rolling resistance and vibration
🚀 Applications Across Industries:
Cycling: Upgrade wheel hubs, bottom brackets, and derailleur pulleys for enhanced speed and smoother pedaling
Automotive & Robotics: Ideal for turbochargers, transmissions, and high-speed motor components
Aerospace: Lightweight and thermally stable for flight-critical systems
Medical Equipment: Biocompatible, non-conductive, and sterile-ready
High-Speed Spindles: Precision-fit for CNCs, grinders, and other rotary machinery
🏆 Why Si₃N₄ Grade 5?
Superior Lifespan: Lasts up to 10x longer than steel under load
Performance Edge: Reduces rolling resistance, heat build-up, and power loss
Ultimate Stability: Performs reliably in temperature extremes, harsh chemicals, or dry-running applications
