Reverse Circulation Hammer Technology is where Holte shows experience. With 30 + years of designing and manufacturing alongside our customers job specific needs we has been able to develop some of the most efficient, durable tooling available that incorporates innovative solutions no other DHH can match. Our large diameter drill hammers, in fact, continually set the benchmark for the industry, helping you stay one step ahead.
Holte's patented grout through drill hammers are the only hammers in the world that have proven successful in drilling down the hole, then grouting on the way out by simply switching a valve.
Whether you need a hammer for specific conditions or just a standard design that draws on our past, proven knowledge of drilling you can rely on Holte to work with you and get the job done faster. We can manufacture and heat treat in house any single piece hammer up to 43” (1092mm) to ensure the ultimate balance between strength and durability of materials.
We also offer Quad (cluster) Drills for even larger hole solutions.
Bolt together design allows rotation in both directions
Quick change bit system allow quick access to bit with hand tools without removing hammer from drill string
Oversized center return allows effective large debris removal for faster penetration
Carburized center tube spans throughout hammer to minimize wear from cuttings
Piston design transmits power to button face breaking rock into large pieces versus grinding them to dust
Designed to operate at higher pressure due to simple piston design and advanced porting
Patented key drives eliminates weigh and length offering better versatility
Patented valve design allows versatility, while protecting working parts from debris