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Help CenterPrecision Tungsten Carbide Bearing Balls
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Brief Introduction
Our tungsten carbide balls are manufactured by powder metallurgy pressing and high-temperature sintering, followed by precision grinding & polishing to achieve ultra-smooth mirror surface. Produced by Zhuzhou Ruiao Tungsten Carbide Co., Ltd., these solid carbide spheres feature high hardness, superior wear resistance and dimensional stability, available in full-size customization for grinding, bearing, measuring and valve industries.
Core Advantages
Ultra High Hardness & Wear ResistanceHardness up to HRA 92–96, wear resistance far superior to steel balls, service life dozens of times longer.
High Roundness & Surface FinishPrecision lapped surface with low roughness, high sphericity, minimal friction during rotation.
Excellent Corrosion & High Temperature ResistanceDense alloy structure resists acid, alkali and oxidation, maintains stable performance under high temperature.
High Density & Impact ToughnessHigh specific gravity enables efficient grinding; medium cobalt grades avoid cracking under heavy impact.
Full Customization SupportCustom diameters, tolerance grades, cobalt content and surface finish as customer requirements.
Main Applications
Precision Bearings & Valves: Flow control valves, high-speed precision bearing components.
Grinding & Milling Media: Sand mill, ball mill grinding balls for ceramic, paint, mineral powder.
Measuring & Tooling: Gauge balls, mold positioning beads, penetration test balls.
Hardware & Machinery: Lock parts, precision sliding components, weighing counterweights.
Custom Specifications
Size Range: 0.5mm – 50mm standard sizes, non-standard diameters customizable
Precision Grade: G3 / G5 / G10 / G16 / G25 high precision tolerance available
Alloy Grades:
Low cobalt (3%–6% Co): Super wear-resistant for grinding media
Medium cobalt (8%–12% Co): High toughness for bearing & impact working condition
Surface: Matte sintered surface / Mirror polished bright surface
Operation Notes
Match suitable cobalt grade according to impact load to prevent ball cracking.
For precision bearing use, select high sphericity G3/G5 grade to reduce vibration.
Store in sealed anti-rust packaging to avoid surface scratch and oxidation.
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