50 – 1/8" (0.125") Grade 5 Silicon Nitride (Si₃N₄) Ceramic Balls
Ultra-Hard | Precision-Made | Low Friction Performance

Engineered for peak performance and durability, this 50-piece set of Grade 5 Silicon Nitride (Si₃N₄) ceramic balls offers a superior solution for high-load, high-speed, and extreme-condition applications. With a diameter of 1/8" (3.175 mm), each ball is manufactured to G5 aerospace-grade precision, delivering unmatched roundness, smoothness, and structural integrity.

Made from Si₃N₄ — an advanced ceramic material — these balls are 60% lighter than steel, twice as hard, and thermally stable up to 1000°C, offering exceptional resistance to wear, corrosion, and deformation.

🔧 Key Technical Specifications:

• Material: Silicon Nitride (Si₃N₄)

• Size: 1/8" (0.125 inch / 3.175 mm)

• Grade: G5 (±0.000005" tolerance)

• Hardness: ~1550+ Vickers (HV)

• Weight: 60% less than equivalent steel balls

• Max Temperature: 1000°C

• Properties: Non-magnetic, non-corrosive, chemically inert, electrically insulating

🚴 Typical Applications:

• Cycling: Ceramic bearing upgrades in hubs, bottom brackets, jockey wheels, and pedals

• Automotive & Robotics: Used in turbochargers, electric motors, and CNC spindles for reduced wear and smoother motion

• Aerospace & Medical Devices: Perfect for weight-sensitive, high-precision environments where corrosion and magnetism must be avoided

✅ Key Performance Benefits:

• Reduced Rolling Resistance – Improves energy efficiency and rotational speed

• Extended Service Life – Significantly more durable than stainless or chrome steel balls

• Thermal & Chemical Stability – Performs reliably in harsh conditions and extreme environments

• Lightweight Advantage – Less rotating mass means quicker acceleration and smoother performance

📦 Package Includes:

• 50x 1/8" (0.125") Si₃N₄ Ceramic Balls

• Secure, contamination-free packaging for precision handling