50 – 3/16" (0.1875") Grade 5 Silicon Nitride (Si₃N₄) Ceramic Balls
High Precision | Ultra-Lightweight | Maximum Performance

Elevate your engineering projects and high-performance applications with this premium set of 50 Grade 5 Silicon Nitride (Si₃N₄) ceramic balls, each measuring precisely 3/16" (0.1875" / 4.7625 mm) in diameter. Crafted to exacting Grade 5 tolerances (±0.000005"), these ceramic spheres deliver exceptional sphericity and a mirror-smooth surface finish, ensuring flawless rotation and minimal friction even under extreme speeds and heavy loads.

Made from advanced Silicon Nitride (Si₃N₄), these ceramic balls provide an ideal combination of ultra-high hardness, lightweight construction, and outstanding chemical resistance. They weigh approximately 60% less than steel while offering superior hardness (~1550+ HV) and thermal stability up to 1000°C, making them the preferred choice for demanding environments where conventional steel balls fall short.

🔧 Key Technical Specifications:

• Material: Silicon Nitride (Si₃N₄) – cutting-edge ceramic

• Diameter: 3/16" (0.1875" / 4.7625 mm)

• Precision Grade: G5 aerospace-level (±0.000005" tolerance)

• Hardness: Approx. 1550+ Vickers (HV)

• Weight: Roughly 60% lighter than steel equivalents

• Thermal Limit: Operational up to 1000°C

• Additional Properties: Non-magnetic, corrosion-resistant, chemically inert, electrically insulating

🚴 Ideal Applications:

• Cycling: Optimize drivetrain components such as hubs, jockey wheels, bottom brackets, and headset bearings with ultra-low friction, durable ceramic balls that boost efficiency and extend bearing life.

• Automotive & Robotics: Enhance performance in turbochargers, electric motors, CNC spindles, and robotic joints by reducing rotational inertia and friction for improved responsiveness and longevity.

• Aerospace & Medical: Suited for lightweight structural components, sterile environments, and applications requiring non-magnetic, corrosion-proof materials capable of withstanding extreme temperatures and conditions.

✅ Performance Advantages:

• Reduced Rolling Resistance: Ultra-smooth ceramic surfaces lower friction, leading to improved speed and energy efficiency.

• Exceptional Wear Resistance: Retains roundness and mechanical integrity under prolonged stress and abrasive environments.

• Thermal and Chemical Stability: Withstands harsh temperature fluctuations and corrosive substances, ensuring reliable performance in extreme industrial or outdoor settings.

• Non-Magnetic and Electrically Insulating: Ideal for sensitive electronic or precision instrumentation where magnetic interference or conductivity pose risks.

📦 Package Contents:

• 50x 3/16" (0.1875") Grade 5 Si₃N₄ Silicon Nitride Ceramic Balls

• Supplied in contamination-resistant packaging designed to maintain product purity and precision during storage and transport.