You are here: Our Business Every Day Mine Services Down The Hole Hammer DTH 1 - Roc 306 Atlas Copco

DTH 1 - Roc 306 Atlas Copco

This is a very compact drill, requires very little maintenance support and can fit into very tight places, is easily moved with a small LHD, IT etc
Ideal for service holes, slots etc

The drill unit was a Atlas Copco Roc 306 “air version” which has been modified to a hydraulic drilling version to enhance its performance and capabilities (almost double the original specifications) whilst leaving the track and boom movements as an air hydraulic system so as to allow easy transport and maneuver of the drill without the need for power. (track drive and boom is still air/hydraulic)


Attached spec sheet shows the drill prior to the hydraulic conversion.

ITH drilling package comprising:

  •  H306 ITH drill 1000v, (hole range 4 inch – 12inch)
  • 1 x DG418 Booster Compressor 350psi
  • 1 x 20ft container c/w
  • Various hand tools
  • Chain tongs
  • Back hammer attachment
  • Various hammers comprising (4, 5, 6, 8, & 12 inch)
  • Various drill pipe
  • Various bit sizes 4 inch to 12inch
  • Lubricants (hammer oil etc
Mast height (drive height for clearance) is:
3.4m high for 1.5m drill pipe
3.7m high for 1.8m drill pipe
4.1m for 2.1m pipe
Currently has 1.5m drill pipe in 4 & 5-inch size.
Mast could be cut down for smaller drip pipe and back height

The rotation unit is an Atlascopco BBR 62 and has had the air motors replaced with hydraulic motors.
The feed is a BMM 36k 659 and has had the air motor replaced with hydraulic motor.

Original vrs new specks
Feed /pull back 3500kg, new spec: 6000kg
Rotation torque 4000kn, new spec 5800kn with a start up of 4240kn.

POWER PACK:
55kw motor
Pump is load sense variable displacement –output 140lt @ 210bar
400lt hydraulic tank c/w water/oil heat exchanger

BOOSTER COMPRESSOR - ATLASCOPCO DG418 ,
Motor 130kw
Compressor serial No: 320250
Rated 350 psi
(can fit smaller motor i.e 55kw etc but would need a good air supply to maintain 350psi)