Bulroc DTH Hammers

 
Button Bits
Bulroc's Button Bits
Bulroc's Button Bits are assembled from the highest quality components, produced to a rigidly maintained specification and subjected to rigorous inspection throughout their manufacture. The resulting product is not only dependable but gives consistent high performance. The Down Hole Button Bits produced by the company suit both Bulroc Hammers and many other popular makes of Down Hole Hammers. Sizes range from 60mm through to 1,100mm. Bulroc Button Bits are available in several head styles to suit particular drilling conditions. Tungsten carbide button inserts are available in either Hemispherical or Parabolic (Semi-Ballistic) form and Button Bits can be fitted with either type or a combination of both.
 
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Drill Tubes
Bulroc drill tubes

Bulroc drill tubes are produced from high quality seamless pipe. They are designed to the highest standards using the thinnest wall section material but without the loss of the necessary strength to give the closest ratio of weight to durability. Tool joints of high alloy steel are nitrited to provide a hardwearing surface for longer thread life. All Bulroc drill tubes are friction welded to give the strongest and most consistent form of welding to ensure long life and dependability. Thread protectors are fitted to both pin and box ends of all Bulroc drill tubes that are finished with a protective surface coating. Bulroc also produce Combined Cased Drill Tubes which are required when drilling large diameter holes with relatively small diameter drill tubes, using air as a flushing medium.
 
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Valved Hammer
Valved Hammer

Bulroc produce a limited range of valved type hammers designed for high performance at low operating pressures. Simplicity of design, ease of service and low air consumption are all factors that combine to make these hammers robust and reliable drilling tools. They are particularly suited to applications where air volumes and pressures are limited and where low weight is an important factor. Seismic Shot Hole Drilling, Slope Stabilization and other applications where access is limited depend on this small but versatile range of hammers.
 
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Hyper Hammer
Bulroc range of Hyper Hammers

The Bulroc range of Hyper Hammers is designed to operate efficiently over a wide range of air pressures. All Bulroc Hyper Hammers can be easily adapted to accept different types of bit shanks by simply changing a few basic components. Several Hyper hammer models are available in Heavy-Duty format to suit particularly arduous and abrasive drilling conditions. The models have increased diameter chuck, wearsleeve and backhead for greater wear protection
 
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Large Diameter Hammer
Large Diameter Hammer

Bulroc's range of Down Hole Hammers includes models designed especially for the Foundation and Piling industries - although there are many other applications where large diameter Hammers are preferred. The Bulroc Hyper 121, Hyper 181 and Hyper 241 between them cover hole diameters from 302mm through to 1,100mm when using conventional Button Bits and from 457mm through to 850mm diameter holes when using the Bulroc CDS Concentric Overburden Systems.
 
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Hyper 301S Hyper Hammer
Hyper 301S Hyper Hammer

The Bulroc Hyper301S is the largest in our range of DTH hammers and capable of drilling from 863mm (34”) through to 1090mm (43”) using flat face button bits with XL24 type shanks. The single full face button bit uses less air and provides for more efficient energy transfer compared to cluster hammer arrangements leading to faster and more accurate drilling. The single large diameter hammer is connected to conventional style hexagon drive drill pipes sleeved to the required diameter to provide for efficient flushing throughout the length of the hole. Bulroc can also offer a ring bit system to suit this hammer when ground conditions require the hole to be continuously cased.
 
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Recirculation Hammer
Recirculation Hammer

Bulroc was one of the first companies in the world to develop and produce the concept of Centre Sampling Hammers for accurate and economical mineral sampling. While other companies around the world produce this type of hammer, Bulroc continue to invest in development to upgrade their range of Reverse Circulation equipment. Our comprehensive range includes Swivel Heads, Dual Wall Drill Tubes and many other associated accessories for these systems.
 
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Eccentric Overburden System
Eccentric Overburden System

For smaller hole sizes, Bulroc produces the ODS "Eccentric" Overburden Drilling System, starting with the ODS 90 to suit 114mm O/D casings. This two-piece system comprises the Shanked Bit Holder and the Eccentric Bit that is secured in the Bit Holder by a double Seeloc Pin. This is easily removed to allow for Bit re-sharpening or replacement. Bulroc Overburden drilling systems are widely used in a variety of applications from Well Drilling and Mini Piling to Rock Anchoring and Site Investigation.
 
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Concentric Overburden System
Concentric Overburden System

Bulroc has developed a range of "Concentric" Overburden Drilling Systems for the continuous casing of medium to large diameter holes - up to 850mm diameter. The equipment gives excellent performance for drilling through loose overburden materials down into solid bedrock. At the start of the drilling operation, the segments are in the closed position to allow the system to pass through the lead casing and seat against the casing shoe. When drilling commences, the segments swing out to drill the hole to the desired diameter. The machines can be withdrawn through the casing by rotating the System anti-clockwise against the solid base of the hole or up against the casing shoe.
 
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Accessories
Down Hole Rock Drilling equipment

As a major manufacturer of Down Hole Rock Drilling equipment, we support the range with many accessories that include:

  • Shock Absorbers
  • Recovery Tools
  • Rod Spanners
  • Button Grinding and Refurbishing Equipment
  • Hammer Stripping and Servicing Tools
  • Oil and Lubrication
 
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