Equipment Spotlight: Rock Tools

Rock tools by Doosan, Vermeer, Railhead Underground Products, Underground Tools Inc., INROCK, Kenco, Ballantine, Mincon, Barbco, Bor-It Mfg., Ditch Witch, Sharewell HDD Services, Melfred Borzall, Radius HDD, StraightLine HDD, Armadrillco and Terra-Bore.

Doosan DXB260H breaker allows operators to match breaker frequency to ground conditions. The DXB260H breaker features two-speed control of breaker frequency for improved efficiency in demanding demotion and rock-breaking applications. Delivering up to 600 blows per minute, the 5,400-pound DXB260H is designed for use with excavators in the 27- to-37-metric-ton weight range, specifically the Doosan DX300LC and DX350LC crawler excavators. Rated in the 8,000 foot-pound impact energy class, the DXB260H requires a hydraulic flow rate of between 39.5 and 63.5 gallons per minute.


The Armor Drilling System from Vermeer is available for horizontal directional drills (HDD) ranging from 9,000 pounds to 100,000 pounds of thrust/pullback. The system features multiple bits, each specially configured to battle a range of ground conditions. An innovative and patent-pending advanced bit mounting design utilizes a solid pin for bit retention and for ease in bit interchangeability and maintenance. The housing is constructed with dual water ports that deliver up to 70 gpm at 800 psi of mud flow to effectively carry cuttings out of the bore hole. It’s designed to be used with the Vermeer Navigator HDD models from the D9x13 S3 to the D100x140 machines, and is compatible with comparable Ditch Witch HDD machines. 888.837.6337,

Railhead Underground Products

From 6 to 16 inches, the EXTReam Rock Reamers from Railhead require a mere 500 pounds of pullback pressure. The newly designed 6-, 8- and 10-inch EXTReam reamers, built with a removable pulling eye on the back, allow flow through capabilities and tandem pulls to be used as a centering wheel. 888.313.7455,

Underground Tools Inc.

Underground Tools Inc.’s HD Stacked Plate Spiral Fluted Backreamer boasts a solid-body construction with a gradual taper cutting face and deep flute design provide smooth cutting and maximum mixing performance. Heavy-duty V-Faced carbide teeth and extensive hardfacing complement this solid steel reamer and allow it to perform extremely well in the toughest of ground conditions, such as; rock, cobble, chunk rock and various other severe soils. 866.488.3478,

Bor-It Mfg.

Heavy-Duty Rock Heads utilize a “V” shape to provide self-centering action which helps maintain line and grade. Featuring easily replaceable carbide tipped “bullet” style teeth, these heavy duty heads are ideal for boring through solid rock of medium hard formations. Head diameters range from 4 inches up to 72 inches and have a 1 1/8- to 5-inch Hex drive. 800.289.6639,

INROCK’s patented XTR-S Extreme Reamer featuring a field interchangeable cutter design allows drillers to easily change cutters, both tungsten carbide insert (TCI) and milled tooth (MT) on the job site, in minutes, without any welding. XTR-S removes all costs associated with old, welded design split bit reamers, such as freight to a weld repair facility, weld repair time and cost or new body costs with each split bit reamer purchase and the need to actually have two reamers of the same type to avoid costly downtime. 713.690.5600,


The Triple Tine Mechanical Grapple has three points of contact to lift irregular shapes such as rock and field stone. No additional hydraulics is necessary to put this attachment into your operation. Just hook a strap from the arm of your current machine to the lifting eye of the Triple Tine. Power is supplied by our exclusive actuator, which allows the device to grab and release automatically. The actuator is housed inside the tube assembly for durability. The Triple Tine is available in models to handle capacities from 3000 to 12,000 pounds, with custom models also available. 800.653.6069,

Ballantine’s replacement Rock Wheel Segments for Ditch Witch and Vermeer are made to order and come in dig widths of up to a 12-inch cut “V” pattern. Made from the highest quality 4140 abrasion resistant alloy steel, these segments have exceptional wear in even the harshest environments like Asphalt and Concrete. Ballantine requires an old segment to ensure the correct bolt pattern and a three week lead time is needed to create your custom segment. 800.328.2424,


Mincon Inc. manufactures a broad range of Hard Rock Hammers for drilling in the horizontal directional drilling industry. The tools are specifically designed for use in medium to hard rock drilling conditions where conventional directional drilling systems offer very little to the contactor when hard rock is encountered. 540.344.9939,

Barbco Cutting Heads deliver a 100 percent cutting pattern, reducing drag and torque to your boring machine, maximizing control of line and grade. The BBC35 Flat Face Rock Head with a drift reducing ring features: replaceable bullet bits; wipers to remove cuttings; a replaceable shank; a changeable shank size; and a heavy duty base plate. 800.448.8934,

Ditch Witch
With the introduction of a new 2.75-inch housing compatible with Ditch Witch JT1220 Mach 1 and JT922 directional drills, TriHawk HD housings are now available in five sizes and compatible with all Ditch Witch and Vermeer directional drills. Key features include a patented, boltless pinned lid system gives electronics the ultimate in protection; a square drive spline that enables operators to quickly and easily change tooling as downhole conditions change; a boltless, pinned-lid system that provides exceptional protection for – and easy removal of – the tracking electronics. 800.654.6481,

Sharewell HDD Services
The 5-cutter Jumbo Lo-Torque Hole Opener product – the LTX24x5 – reduces impact loading on the cutters, which increases the product’s working life. It also reduces the torque cycle while reaming, creating a very smooth running hole opener. The body is bi-directional and can be either pull or push reamed. Ideal for pipeline projects, the Jumbo cutters offer large, sealed bearings for extended runs. It is available in Mill Tooth style, IADC type 5 T.C.I. and IADC type 8 T.C.I. A minimum pilot hole of 26 inches can be made using the LTX24x5, and hole sizes ranges are 36, 38, 40 and 42 inches. 281.288.2560,

Melfred Borzall

The new redesigned Eagle Claw bit is made for hard, rocky soil conditions. The hardened steel carbide cutter teeth on the front of the bit are designed to cut through the hardest soils and interchangeable cutter teeth accommodate a wide variety of job conditions. Carbide buttons on the leading edge of the bit, as well as the bit body, minimize wear. Easy to steer during directional pushes and a beveled, carbide protected back-end make tripping-out easier. The smooth running Eagle Claw cuts down vibration to the drill-stem and drill rig. Available in several cut sizes for rigs from 7,000 to 150,000 pounds. 800.833.1252,

Radius HDD
Single Roller Cone Bits deliver enhanced steering, while a carbide-covered steering plate and additional carbide on the face delivers better grinding capabilities for your solid rock jobs. The 3000 Series Single Roller Cone Bit has a thread connection 2-inch IF pin and cutting size is 5 inches. 800.892.9114,

StraightLine HDD
StraightLine Hole Openers get you through the toughest conditions. Featuring tungsten carbide insert (TCI) bits in either new or premium re-run condition, our hole openers are custom configured to your specifications. You specify tool diameter, number of cones, cone diameter, connections, stabilizers, and shaft length, front and rear. We can build rock reamers with shaft sizes from 3 inches to 6 5/8 inches, and size ranges from 8 to 36 inches. 800, 654.3484,


Using the similar technology as the oil fields, the Armadrillco Rock A. Drillo drills in granite and other hard materials. It is designed to fit securely on Armadrillco’s slant nose products. It drills smooth and does not require massive amounts of air or drilling mud. In addition, cross pin technology holds the Rock A. Drillo in place. 800.994.0915,


Terra-Bore High Flow End Load Housings are manufactured from a single bar of heat treated nickel steel alloy. Terra-Bore housings are designed to work with steering shoes, mud motors, tri-cone bits and hammers. A simple clocking mechanism is designed for use with 15- or 19-inch walkover or wireline sondes. Available in 3 5/8-inch diameter, 2 3/8-inch API Reg by 2 3/8-inch IF; 4.25-inch diameter Hi-Flow Housing 2 7/8-inch API Reg by 2 7/8-inch IF; 4.88-inch diameter Hi-Flow Housing 3 ½-inch API Reg by 3 ½-inch IF; 6.38-inch diameter Hi-Flow Housing 4 ½-inch API Reg by 4 ½-inch IF and 7-inch diameter Hi-Flow Housing 4 ½-inch API Reg by 5 ½-inch DSFH sizes. An 8-inch housing will soon be available. Sidewall thickness in the 6 3/8-inch O.D. with 4 ½-inch I.F. box by 4 ½-inch API Reg Box exceed 1 inch, making this the strongest Hi-flow End Load housing available. 609.859.3300,

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