- 1-1/2" - 3-1/2" Dia. Holes
- Pneumatic Percussion
- Independent Rotation
- Fast Penetration
- Efficient Use of Air
- Versatile Application
The
Drill You Can Count On!
When the drilling assignments are tough, and most of
them are, you need drilling equipment that won't let you down.
You need a drill that will perform efficiently day after day with
minimum maintenance. Gardner-Denver's PR55 is the pneumatic,
valveless, rock drill that will do just that. It incorporates all
the latest technology to give you powerful, high performance in the
hole size range of 1-1/2" to 3-1/2" in diameter.
Look at the benefits...Maximum control.
First of all, you can tune the PR55 to the type of
rock you are drilling. You can increase or decrease either the
rotation or percussion action independent of each other to achieve
maximum footage.
Better working environment.
The PR55 has a muffler that is and integral part of
the cylinder to keep noise levels to a minimum, thereby reducing
operator fatigue.
Reduced maintenance.
An important advantage of the PR55 is in its
valveless design. Valveless drills have fewer moving parts.
Less parts to wear out, and lower parts inventory all add up to reduced
maintenance costs. Your drill will be operating on the job longer.
Faster penetration.
Keeping the drill
operating is only part of the requirement. Penetration power is
the real test. The PR55 has a reversible hammer, double supported
by bronze bushings. The hammer operates with short
strokes...thus, more blows-per-minute and faster penetration.
Use PR55
drills on Air Tracks or Underground Jumbos
Versatility.
We built the PR55 with versatility in mind. It
can be used for either surface or underground drilling. Just
specify either wet hole-cleaning or dry hole-cleaning.
The bolted-on chuck end cap is standard for either
application. It provides rigidity and alignment of the drill
shank. We also offer the biscuit-type chuck end for underground
drilling, where fast shank changing capability is an important
consideration.
The PR55 bolted-on chuck end assembly can be
pressurized to keep out water and cuttings.
Whichever PR55 drill you choose, you can count on
Gardner-Denver's long history of quality and service to help you get
the job done.
