WorldWide Drilling Resource

Nitrate Coated Premium Liners 5x6, 5x8, & 5x10 Gardner Denver 5-1/2x8 & 5-1/2x10 Gardner Denver 7-1/2x8 & 7-1/2x10 Gardner Denver Rods Heat-Treated & Chromed 5x6, 5x8, & 5-1/2x8 Gardner Denver 5x10 & 5-1/2x10 Gardner Denver 7-1/2x8 & 7-1/2x10 Gardner Denver New Pumps In Stock Gardner Denver 4x5 TEE Triplex. Gardner Denver 5-1/2x5 TEE Triplex Gardner Denver 4x5 or 4-1/2x5 Duplex Gardner Denver 5x6 Duplex Gardner Denver 5x6 Air Drive Duplex Gardner Denver 5x8 Duplex Gardner Denver 5-1/2x8 Duplex Gardner Denver 7-1/2x8 Duplex Gardner Denver 7-1/2x10 Duplex Gardner Denver 5-1/2x5 THE Triplex Gardner Denver 5x8 PAH Triplex Call for Prices. We Have a Variety of Brands of Mud Pump Parts and Power Units in Stock. Special or Obsolete Parts Made to Order . Cash for Surplus Mud Pumps . Rebuilt Mud Pumps 4-1/2x6 Gaso Duplex 4-1/2x6 Oilwell Duplex Gardner Denver 4-1/2x8 PA-8 Triplex Gardner Denver 5x6 Duplex Gardner Denver 5x10 Duplex Gaso 5x10 Duplex OVER 300 PUMPS IN STOCK Armstrong Machine Co. Inc. Pocahontas, IA 50574 USA 712-335-4131 ~ 24 Hours 7 Days a Week • Fax: 712-335-4565 800-831-4527 USA & Canada (8AM to 4PM Monday-Friday) armstrongmachine.com amci@armstrongmachine.com Hydraulic Grout Pumps 5”, 6”, & 7-1/2” 28 SEPTEMBER 2018 WorldWide Drilling Resource ® The ROCK HOG Way Adapted from Information by Rock Hog Drilling Products Rock Hog has been manufacturing down-the-hole (DTH) hammers and bits since 1990, but the company as a whole has been in the manufacturing business since 1974. During this time, Rock Hog has manufactured key components for many well-known companies such as Cat ® , John Deere, Ingersoll Rand, JLG, Grove Worldwide, and NASCAR to name a few. The company is now into its third generation of being family owned and operated. The Rock Hog name was established as head engineer Mr. Loren Myers and President Tom Hill were returning from their first demo with a hammer and bit. As they passed through a cut in the mountain, Mr. Myers said “Rock Hog” and the name stuck. Mr. Meyers has been with the company for 32 years and played a major role in the start-up of the company. One of his roles was as the artist of the original Rock Hog logo, which was drawn freehand. After some tweaking by modern technology, his design is the logo of today. In 2009, Mr. Myers played a key role in the design of the High Performance (HP) DTH Hammers’ unique valving. The HP Hammers’ unique valving, allows it to be stingy on air but generous on penetration. Operators in the field report they are able to reduce revolutions per minute (RPMs), allowing major fuel savings, without sacrificing penetration rates of two to three feet per minute in hard rock drilling applications. Rock Hog’s manufacturing experience has aided them in the develop- ment of their DTH hammers and bits. All DTH hammers and bits are manufactured at the company’s Mercersburg, Pennsylvania, facility using U.S. certified steel. Rock Hog believes in thinking differently when it comes to man- ufacturing. As a result, all of the manufacturing the company does is meant to challenge the status quo of DTH product performance. By giving their products a better design and making them cost effective, they challenge other manufacturers, which aids the industry as a whole in producing equipment with the best quality and performance. This has allowed the company to manufacture quality DTH hammers and bits here in the U.S., which they sell to customers around the world. As Rock Hog looks toward the future, they will continue to advance their products for the betterment of the drilling industry. The original hand-drawn Rock Hog design. MIN WWDR photo of the Rock Hog truck.