Secoroc Down the Hole Equipment

Rock Drilling Tools

Why DTH drilling?
Quality holes. In the 110-171 mm range, DTH is the dominant drilling method today. Superb hole straightness (within 1% deviation without guiding equipment); good hole cleaning; smooth, even walls for easy charging of explosives; deep hole drilling capacity; and efficient energy transmission are benefits that have effectively sidelined other drilling techniques.

Greater flexibility. Employing the DTH method, it's easy to optimize the layout of a quarry or open pit mine. That's why this technique is rapidly replacing not only traditional rotary units in blast-hole drilling, but also top-hammers in delivering perfect quality holes. After all, why change rig when all you need to do is change the size of your hammer!

In addition, DTH lends itself superbly to numerous other applications, including water well drilling, exploration, foundation, anchoring, and geothermal holes.

Unbeatable productivity...
The unbeatable performance of Secoroc COP DTH hammers is down to innovation. Numerous novel features, including our patented air cushion, combine for superior penetration and modest air/fuel consumption. Our hammers are complemented by a full range of Premium Plus DTH bits, featuring new head designs for maximum efficiency. Productivity, however, isn't just gauged by how far you can drill in a day. It's also measured by how long your equipment lasts -- a fact we've given a great deal of thought to.

...and equally unbeatable back-up We provide a comprehensive selection of tools to help your equipment maintain its performance. For a start there's Secoroc Grind Matic, the world's most extensive range of grinding equipment, designed to ensure your bits remain on the cutting edge. Then there are our robust DTH tubes, guaranteeing a trouble-free drilling cycle. There's also Secoroc COP backhammers, which allow you to extract equipment that might otherwise be lost.   These products all add up to the most productive package in DTH drilling history. We call it Lifecycle Penetration Rate.   Welcome to the world of Secoroc.

Handling pressure
Drilling means subjecting your equipment to pressure. And the leap to today's 25 bar high-pressure standard has been tough. Compression rings and buffers are especially vulnerable. Not so for COP 64 Gold. Equipped with a steel disc spring and new lower buffer, operating pressure enjoys a market high of 30 bar.

Blowing the problem away
A large influx of water creates back pressure in the hole. This can have a dampening effect on productivity -- but not if you use COP 64 Gold. This hammer continues to work efficiently even under back pressure, maintaining performance all the way down the hole.

A further productivity boost is provided by a new feature which permits you to change the air flow through the hammer by adjusting the length of the foot valve. We provide a user-friendly tool for the job; you'll complete the adjustment in a matter of minutes.

Outlasting the competition
When it comes to reliability, COP 64 Gold is rapidly becoming the industry benchmark. It's new cylinder, made of special high strength steel, is ideal for abrasive applications. Furthermore, the 12-spline bit design keeps spline wear to a minimum. Ultimately, you're looking at a considerably longer service life compared to competing equipment.

Compressed air cushion

Smooth performer
Our new hammer has a built-in shock absorber, preventing devastating recoils in the drill string and severe damage to the mast structure and rotation unit. The spin-off effect is a boost in productivity -- less maintenance means higher availability and far more meters drilled.

Efficiency by design
On COP 64 Gold, we've given the piston a pentagon shape. That, combined with milled air slots in the cylinder, greatly enhances piston guidance. And, of course, less internal wear means sustained efficiency and productivity throughout the life of the hammer.

Easy to change bits
The unique combination of different threads in the top subs and chucks ensures swift and easy bit changes. In fact, because you can break the chuck thread open by hammering against the rock or a block of wood, it'll never take you longer than a few minutes. Another productivity booster!

Choosing the Right Hammer

Choosing which hammer to use is largely determined by hole size and the type of formation you're working in. Ideally, the size of the hammer should match the required hole dimension as closely as possible -- leaving just enough space for cuttings to evacuate the hole.

Standard design
Our Standard hammer is ideal for water well drilling, blast hole drilling, and civil engineering projects.

HD design
Designed for abrasive and demanding applications, our Heavy Duty hammer features a larger overall diameter, in turn allowing for thicker walls and, ultimately, a longer service life. What's more, it's equipped with reversing back-out buttons, not only protecting the top sub from wear as it retreats from a collapsed hole, but also helping to free the hammer as it's being pulled out.

Technical Data

Technical Data

Hammer Types

Type	Std.	HD	L
COP 34	X
COP 44	X
COP 54	X	X
COP 64	X	X
COP 84	X		X

Air Consumption

Full service on-site in just 30 minutes Regular service intervals are essential to ensure high availability and low fuel consumption. To this end, we provide a combined field service breakout bench, allowing you to break and service the hammer in the same vice. No special tools are required once the top sub and chuck threads have been loosened. The bench can handle hammer sizes from 3" up to 8".

Breakout Bench

Worn hammer? Rejuvenate it with our Economy Kit Traditionally, a DTH hammer has to be replaced when it is either worn out externally or the penetration rate has dropped by 20% or more. That's not the case with an Atlas Copco Secoroc hammer. With our Economy Kit -- consisting of top sub, cylinder, and chuck -- you can readily replace worn components. This way you'll be able to rebuild your hammer at least once -- with no drop in performance -- before it's time to invest in a new one.

Hammer Economy Kit

Sustained Hammer Efficiency

COP Backhammer

High quality tubing
Secoroc tubes are made from cold drawn tubing, providing a superior surface finish and tolerance compared to their hot rolled counterparts. Our solution drastically reduces the risk of scaling -- the cause of so many premature hammer failures.

No weak links
Traditionally, the threads and the joint between the tube and the end-pieces are vulnerable. To combat the problem, we've friction-welded the joints for maximum strength and heat-treated the end-pieces for optimal durability.

Never losing the thread
Heat-treating the threads ensures not only a long service life, but also simplifies joining and breaking -- thereby cutting cycle time. To meet varying demands, we provide a selection of API threads. For applications where foam injection is used, we recommend the IF thread.

Naturally, we also offer a wide range of subs and crossovers -- all made of high quality steel and heat-treated in the same way as tube end-pieces.

Drill Tube Range

Drill Tube Range

A benchmark solution
When our Premium bits were first introduced they were the benchmark by which all other DTH bits were measured. So when we started work on the next generation, the goals were, to put it mildly, ambitious.

Like their forerunners, Atlas Copco Secoroc's new Premium Plus DTH bits address the age-old problems of shanking and chunking. After extensive field tests in tough conditions, we can report a 10-13% increase in bit life--even up to 50% in some formations! Add to this a 5% increase in penetration rate, and we're confident our new range offers unbeatable value.

Tough bits for a tough life
The new Premium Plus design provides novel refinements such as a tougher steel grade for improved fatigue properties. Furthermore, we've not only repositioned the buttons for faster penetration, but also designed them to protrude more -- for improved cuttings removal, less secondary crushing, and easier bit grinding. And to reduce the risk of jamming in the hole, the taper on the bit head is shorter with a larger clearing. We can safely say that shanking and chunking are now so uncommon as to be considered rarities.

Flat front HD
Flat front with large spherical buttons for hard and abrasive formations. Features front flushing grooves for efficient cuttings removal.

SpeedBit
Flat front with spherical gauge buttons and ballistic center buttons. For high penetration in medium hard to hard abrasive formations. The productivity booster!

Bit Designs

*Double gauge row                           

Premium Plus bit range

Convex front/ballistic buttons
Convex front with large cutting grooves plus ballistic gauge and center buttons. Ideal in soft to medium hard non-abrasive formations. The bit is designed for maximum penetration rate. Can even be used in hard abrasive formations if high penetration rate is called for.

Concave front design
Concave front with spherical buttons. Perfect choice for medium hard to hard, less abrasive fractured formations. Provides excellent control over hole deviation.

Concave DGR front design
Concave front with double overlapping gauge rows of spherical buttons. Only available for 8" bits and larger. A reinforced gauge provides superior protection in medium hard to hard, abrasive, and fractured formations.

SECOROC Grind Matic -- a complete range of grinding equipment
There is no better way to keep your buttons sharp than using our Grand Matic grinding machines. We provide solutions for every conceivable application -- including fixed installations, field operations, and manual grinders.

For productivity-conscious DTH drillers, we offer three dedicated grinding machines: Grind Matic BQ2-DTH, Grind Matic Jazz, and Grind Matic Manual B-DTH. As each caters to different needs, we're confident you'll find just the one you're looking for.

These grinders all feature our patented diamond grinding wheels. There is no better way to restore worn spherical and ballistic buttons to their original glory.

Grind Matic BQ2-DTH -- for large-scale production operations A fast and efficient machine, Grind Matic BQ2-DTH is ideal for bigger drilling operations. Featuring an indexing bitholder and an automatic centering arm, plus a powerful motor, this is a machine with a truly impressive grinding capacity.   Grind Matic BQ2-DTH is built to last, too. The spindle bearing is protected by a splashguard. And all electrical and pneumatic components are housed in a cabinet on the side of the machine, protecting them from dust, dirt, and water.

Secoroc Grind Matic BQ2-DTH

Secoroc Grind Matic Manual B-DTH

Secoroc Grind Matic Jazz

Grind Matic Jazz -- for smaller-scale mobile operations
A rig-mounted semi-automatic grinding machine, Grind-Matic Jazz is designed to replace today's standard method of using a handheld grinder. Ideal for smaller-scale operations, this new grinder utilizes our patented diamond grinding wheels to grind worn spherical and ballistic button bits to perfection.

Grind Matic Jazz handles every conceivable size -- from 35 mm all the way to 254 mm DTH bits. As you take the grinder with you wherever you go, a boost in production is sure to follow.

Grind Matic Manual B-DTH -- a hands-on grinder
Specifically designed for manual grinding of DTH bits, this air-powered machine is a model of economy. Mounted in a box fitted with wheels and handles, you take the grinder with you. Simply connect your Grind Matic Manual B-DTH to air and water -- and it's ready to use.

Grinding Wheel vs. Grinding Cup

Every experienced driller knows that drilling productivity and drilling costs are influenced by a host of factors beyond price and performance. Rock characteristics and hole deviation have significant impact on drilling, as do operator experience or misuse and loss of drilling tools. There there's the time spent on administration and inventory management -- all of it just to have the tools to do the job over the next few days. Not to mention the care and maintenance necessary on bits or hammer if you want a well-tuned drill string.

So, if you're in the market for the best DTH partner -- on-side and online -- then we urge you to read this section of the brochure very carefully.

Playing to win-win
We know that top-class DTH rock drilling tools are a good basis to start working from. But to help you extract maximum productivity from your drilling operation, we provide value-added support and extensive know-how. As we see it, in the best of all business worlds everybody wins.

Care and maintenance
We have wide experience and knowledge of service and reconditioning of DTH hammers and bits. Our know-how and grinding equipment will maximize the performance of your bits, while the breakout bench facilitates hammer service. Our backhammer, moreover, will help you recover drill strings stuck in the hole -- saving time and money.

Training -- on and offline
We work closely with our customers to optimize training for operators and maintenance staff. Service and training can even be performed on a daily basis together with our local sales teams and technical service personnel.

We can also help you remotely -- thanks to our PC-based training tools. One of the most effective ways to learn about drill steel is through our Computer Based Training (CBT) program. With the aid of 3D animations, photographs, film sequences, and interactive lessons the student will gain valuable insight into how the market's leading rock drilling tools can provide a real boost to profitability. In total, the Secoroc CBT program comprises some 50 hours of lessons and exercises.

Supply and inventory
With access to our extensive DTH product range, you'll find just the right products for your drilling application. Our efficient supply chain is designed to support you from day one and every step of the way. What's more, working closely together we'll set up and monitor a smooth supply link to your drilling operations.

After centuries of innovation, we don't know how to stop
Secoroc's quest for superior drilling economy has been the key driver in all our innovations. But we never forget where most of our ideas come from. As a customer, your input and active involvement in our development process is always welcome. After all, the vast majority of our innovations over the years have been products of listening and learning.

With our DTH equipment being as efficient as it is, you run the risk of having plenty of time on your hands. How to spend it? You could immerse yourself in classic literature. You could learn how to tend a bonsai tree. Or you could do the smart thing and head for www.atlascopco.com, where you'll find more productivity boosting solutions.