Precision Balls for Mining & Heavy Drilling
Ultra-hard balls for rock bit tools and heavy crushing mechanisms. Manufactured to tight ISO 3290 and DIN 5401 standards with certified material traceability and zero-defect optical inspection.
Meeting the Demands of Mining & Heavy Drilling Applications
The mining industry destroys standard materials in days. Our heavy-duty precision balls are designed for maximum impact resistance and wear longevity. Used in massive rock bit tools and crushing mechanisms, our Tungsten Carbide and Rockbit Tool Steel balls keep operations running with minimal downtime.
Rama & Sons supplies OEMs, tier-1 suppliers, and specialized sub-assembly manufacturers worldwide with precision spheres that guarantee long service life, high fatigue strength, and smooth rotational performance.

Primary Sub-Assemblies & Applications
- Rock Bit Tools
- Crushing Mechanisms
- Mining Valves
- Heavy Conveyors
Recommended Alloys & Metallurgy
We also engineer custom alloys, non-standard diameters (like 4.789mm), and specific heat-treated hardness levels to meet your engineering drawings.
Products Engineered for Mining & Heavy Drilling

Rockbit Tool Steel Balls
Hard-wearing Rockbit tool steel balls designed for high-impact and abrasive conditions in drilling, mining, and construction applications. Supplied by Rama & Sons.

Stellite Balls
Wear-resistant Stellite balls from Rama & Sons. These cobalt-chromium alloys are ideal for high-wear, high-temperature, and corrosive applications such as valves and pumps.

Tungsten Carbide Balls
High-density tungsten and tungsten carbide balls from Rama & Sons, suitable for applications requiring high mass in a small volume, extreme hardness, or radiation shielding.
Frequently Asked Questions: Mining & Heavy Drilling
Need Custom Precision Balls for Mining & Heavy Drilling?
Contact our application engineers for material selection guidance, sample testing batches, and global delivery schedules.