Drill Rig Mods:
Rotary Top Head Drive Modifications

Holte Manufacturing has been modifying existing drive heads for many years. We can turn your Kelly drive system, providing it has a large spindle opening, into a fully functional reverse circulation system, complete with air inlet, pinch valves for grout through technology and cuttings discharge.

We have modified Bauer, Casagrande, Soilmec, ABI and many other brand machines into fully functional RC drilling rigs making them truly the most versatile drill rigs on the market today capable of drilling large foundation holes into hard rock formations where other systems simply can’t go.

These modifications will open new doors and will keep you ahead of the competition as the demand for larger drilled foundation holes into rock grows and spread footings any longer satisfy seismic requirements.

Contact us today at Holte and find out how we can help you turning your rig into a more capable machine at a minimal cost.

You’ll be glad you did.



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Rotary Top Head DrivesRotary Top Head Drive ModTop Head DriversWell Drilling Tools

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© Copyright - Holte Manufacturing - Veneta, Oregon. Drilling equipment design, consultation and field applications.

Your #1 source for foundation and well drilling products and tools, Reverse Circulation / RC drilling equipment and drill pipe, Hole Hammers, Casing Drivers, Extractor Hammers, Perforators, Casing Cutters, Top Head Drivers, Air Inlet Swivels, mast modification, Grout Inlets and refurbished drill rigs. We also specialize in Secant retaining wall construction and bridge construction. Please contact us at (541) 935-5054 for consultation or sales questions.

All products are Made in the USA!

We are also proud to make a wide variety of
Glue Mixing products, machines and tanks used all over the world.

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