Mitsubishi Materials Corporation has been developing 
percussion rock drilling tools for over 60 years in Japan. 
Mitsubishi is truly a worldwide player and is offering high 
quality products to the global market.  Currently Mitsubishi 
is supplying over 50 countries and continues to increase the 
number of sales districts.  

Mitsubishi Rock Tools products are manufactured from 
highly wear resistant steel and our own in house Japanese 
produced Mitsubishi carbide inserts.  These carbide inserts 
are designed and produced by experienced engineers using 
the most advanced computer technology.  Using this new 
computer technology, these carbide inserts are combined 
with the special steel bodies developed by Mitsubishi to 
provide the client with unbeatable consistent quality.  What 
is more, each bit body is marked with a manufacturing lot 
number that allows precise tracking and control through the 
full history of the manufacturing process of carbide inserts 
and steel bodies.  Mitsubishi has been a leader in helping 
to achieve remarkable technological innovations that have 
propelled the mining, construction and quarry industries to 
the highest drilling efficiencies.  State-of-the-art technology 
in Mitsubishi Rock Tools have kept pace with the new breed 

of hydraulic drilling machines.  Incorporating our products 
with these new drilling machines has resulted in additional 
labor savings, greater effi ciencies, and safety for the clients. 
In order to allow the new drills to display their maximum 
capacities and efficiencies, Mitsubishi Rock Tools products 
undergo refi ned laboratory studies and are put in extensive 
fi eld experiments in every conceivable rock drilling condition.  
Testing of Mitsubishi Rock Tools products in the fi eld is done 
by qualified engineers who report in detail the findings to 
the client’s management, and these test results are used to 
determine the correct products for the best overall drilling 
economy.  Mitsubishi is constantly striving to improve rock 
drilling excellence and continues to research new Mitsubishi 
Rock Tools products and develop new technology to lower 
drilling costs.  We produce for you a product which is the 
most consistent, highest quality drilling tool manufactured in 
the world today.  At Mitsubishi we believe that the Mitsubishi 
Rock Tools products we produce will meet your every request 
and give you the best possible drilling economy to make 
your operation more profitable.  Please contact Mitsubishi 
Materials and get in contact with your nearest representative 
to start lowering your drilling costs today.