CAT AC
DTH HAMMERS
794®

AND BITSDRILLFASTERDRILL
LONGER

Drilling sets the tone for yourwhole operation, impacting thespeed, efficiency and cost of all
downstream operations.

2DTH HAMMERCat ® Down-the-Hole (DTH) Hammers
and Bits offer fast and reliable
operation that lets you cut down oncosts, reduce time spent drilling and get
to work producing as soon as possible.
Cat DTH Hammers are designed to drill fasterand last longer in even the toughest blastholeapplications. Efficient design, proprietary materials
and advanced heat-treating give them superior wear
life profile, resulting in reliable operation and a longlife — even in the toughest drilling conditions.

DTH HAMMER3

A VARIETY OF TOOLS TO
MEET YOUR NEEDSCat DTH Hammers come in three configurations
to best suit your application’s specific needs.
Each has a unique design that manages
impact force and piston frequency todeliver an optimal rate of penetration.
All are made of advanced materials,
resulting in a fast-hitting, long-lasting
piston that can help you get moreout of your operation.

4DTH HAMMERSD HAMMERHP HAMMER

This hammer is suited to awide range of applications.
The piston design is 18%
heavier than comparable
high-frequency hammers.
The hammer’s focus is highimpact load at reduced blow
frequency suitable for lowor medium-hardness rockformations. It’s a simple androbust design for cost-focused
drilling operations.

This hammer is built toughfor production drilling in hardrock. It has an optimized
performance curve of impact
force and blow frequency
for the upper range of rockhardness. In the 6-inch class,it has a tunable air valve thatcan be adjusted for different
air packages, adapting to
your on board compressor
capacity. And its reversible
barrel design maximizes wear
characteristics.

75-250 Mpa

250-550 Mpa

TF HAMMER
150-360 Mpa

This hammer has the same
attributes as the HP hammer,
but it is shorter and lighter —making it easier to handle.
Additionally, this hammer
design is valveless and uses
shorter shank bits, giving it
maximum durability with fewer
part replacements required.
An exclusive bit shank design
features a retention system
consisting of a three-piece
drive chuck and an internalsleeve. The sleeve is a uniquewear item that lowers drive
chuck replacement costs,
further driving down youroperating costs.

In the 6-inch class, the HP and TF
hammers feature an adjustable air
distributor that can be customized to
specific air packages for maximum
performance. Each setting delivers
optimized cycle times for higher BPM(blows per minute). There are threesettings to match the hammer air
consumption to the drill air package
output. Using the ideal setting
reduces premature wear and energy
waste while delivering optimum
drilling speed.
+ 900 cfm default+ 25% higher BPM at 1,200 cfm+ 12% higher BPM at 1,070 cfm

DTH HAMMER5C ATDTHBITS
Cat DTH bits are made of superior materials with precise engineeringand manufacturing, and offer repeatable, dependable results. Designedfor efficient operation and low total drilling costs, Cat DTH Bits are madefrom high-quality alloy that delivers maximum bit hardness without
sacrificing toughness, while the after-treatment surfaces extend wear
life. The bits for HP and SD hammers use a standard QL shank for
dependable performance and compatibility with other brands. Twohole bit designs offer higher air speeds, while three-hole bits deliver
enhanced air distribution. Optimized airflow and material discharge andan upgraded foot valve design result in overall better performance. Bitcustomization is available to meet site and drilling conditions.

6

DTH HAMMEROur bits are tested in labs andin the field, so you can be surethat you’re getting a dependable
product that stands up to thechallenging conditions of your site.
Digital testing takes place
in a variety of hardness conditions
using Cat® Rocks 3D™, anadvanced software analysis systemthat analyzes strength and airflow.
In the field, we obtain machine andtool performance data to makerecommendations to best match
the product to the application.

DTH BIT SELECTION CODE
BIT DIAMETERFACE SHAPEGAUGE BUTTON (OUTER ROW)

INTERMEDIATE ROW & FACE

mminchID

Qty x Size

IDSizeID

165

6 1/2ConcaveCC

8 x 16mm

1—0171

6 3/4

ConvexCV

8 x 18mm

216mm

2200

7 7/8

Flat FaceFF

8 x 19mm

318mm

3203

8ConcaveConvex

CCV

9 x 16mm

419mm

4216

8 1/2

9 x 18mm5222

8 3/4FLUSHING HOLE

9 x 19mm6229

92

10 x 16mm

7241

9 1/2

3

10 x 18mm

8251

9 7/8

10 x 19mm

254

1012 x 16mm

SHANKID
QL60

Q6

QL80

Q8

TF60

T6

BUTTON TYPE
ID
All
Spherical

SS

Spherical+ ballisticSB

DGR (allspherical)

DS

WEAR PROTECTION
BUTTONS
ID
GP

9Gaugeprotection

10Back reamingBR

12 x 18mm

11GB

12 x 19mm

12Gaugeprotection +back reaming

14 x 16mm

13

14 x 18mm

14NoneN

14 x 19mm

15

DGR (S+B) DB

DTH HAMMER

7CAT SUPPORTFOR LONGER LIFE
AND LOWER COSTS

8DTH HAMMERDEALER STORESPARTS DEPOT

Our rock drilling tools are backed by theknowledge, expertise and on-the-groundsupport of the Cat dealer network.
Parts ranging from base O-rings to replacement
sleeves and pistons are readily available, so you cankeep your machines hard at work. We also offer
service tools such as a teardown bench and bit
grinding tools that will help extend product service
life. By choosing Cat DTH Hammers and Bits, yougain a partner in your drilling operations.

Your Cat dealer can help+ Define the right tool for the application+ Provide training to maximize use and life
+ Provide support for the life of the product+ Assess machine operating conditions+ Track tool performance and analyze totaldrilling cost
Caterpillar also offers+ Worldwide parts availability+ High-quality Cat parts+ Straightforward service manuals+ Caterpillar-trained service technicians

DTH HAMMER

9MAKING
EVERY SHOT
WORTH MORE
CAT® MINESTAR™
SOLUTIONS FOR DRILLING
Cost-effective, high-precision drillinggets your whole mining value chain
off to a good start. And Cat MineStarSolutions can help. MineStartechnologies for drilling help you
achieve excellent results — fromincreased accuracy and consistency
to quality fragmentation andbetter blasthole quality.
MineStar Solutions for drilling include
a range of capabilities that let you
configure the drilling system to meetyour budget and the needs of yoursite. Features and components serveas building blocks that allow you toeasily grow and add features andcapabilities at your own pace.

10

DTH HAMMERTERRAIN FOR DRILLINGDRILL TO PLAN
Terrain for drilling uses state-ofthe-art guidance technologies tohelp operators drill holes in theexact location and to the exact
depth specified by the plan,
resulting in smoother, safer andmore efficient blasting.

COMMAND FOR DRILLING

AUTOMATE YOURDRILLING OPERATION
Command for drilling delivers costeffective, high precision drilling throughautomation — which will ultimately reduce
operating costs, increase safety and improve
productivity. From predrill planning to blasting,Command impacts the bottom line all the way
through the crusher and mill.

DTH HAMMER

11DTHFor more complete information on Cat products, dealer services and industry solutions, visit us at www.cat.com
Materials and specifications are subject to change without notice. Featured machines in photos may include
additional equipment. See your Cat dealer for available options.
© 2020 Caterpillar. All Rights Reserved. CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos,“Caterpillar Yellow”, the “Power Edge” and Cat “Modern Hex” trade dress as well as corporate and productidentity used herein, are trademarks of Caterpillar and may not be used without permission.

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