Topdrill Engineering Team - Topdrill

DTH Hammer Lubrication Guide: How Much Oil, Which Grade, and When to Double It

Technical Guides / Topdrill Engineering Team

Rock drill oil does two jobs inside a DTH hammer, and most crews only think about one of them. Yes, it reduces metal-to-metal friction between the piston and cylinder. But just as importantly, the oil film acts as an air seal across the running clearance — blocking pressure loss and air leakage that would otherwise […]

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6 Reasons Your DTH Hammer Won’t Strike — and How to Fix Each One

Troubleshooting / Topdrill Engineering Team

Six field causes of a DTH hammer that will not percuss — and the checks that tell them apart before you pull the string.

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Smarter PHC Pile Installation: Standard T4 vs. Combination T4 at a Semiconductor Mega-Project in Yongin, Korea

References / Topdrill Engineering Team

At one of the largest semiconductor fab construction sites in Korea — the Yongin cluster — thousands of PHC piles must reach firm bearing strata before a single structure rises above ground. Topdrill supplied DTH hammers and drilling tools for this foundation piling work, and the project became a good demonstration of a question we

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