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LM™75

MARKETS: Mineral Exploration

The LM™75 is a mid-sized drill rig for underground diamond coring. It is equipped with a 70kN feed frame for medium hole depth. It is modular in design with a number of options which make it easier to tailor to specific needs and to upgrade when requirements change. With the assistance of a positioner and a turntable the drill is capable of drilling holes in all angles from vertically up to vertically down. The drill uses an electric motor (diesel engine optional) to power the hydraulics on the machine.

  • Direct drive feed frame with 70kN pullback and 1.8m standard feed stroke. Optional 1m or 1.5m feed stroke for confined spaces.
  • Standard Power Pack with 75kW electric motor. 55kW and 90kW electric motor or 99kW diesel engine are also available as options.
  • Standard Self contained control panel with stand and e-stop.
  • Standard Feed Frame Positioner and Turntable (option).
  • HQ™ (HQ™ high torque optional) rotation unit with chuck assembly.
  • HQ™ (PQ™ optional) rod clamp; spring close and hydraulic open.
  • Semi-automated rod handler (optional).

LM™75 Features

1. Load Sensing Hydraulics

Load sensing hydraulics maximize efficiency and reduce heat

2. Proportional Controls

Proportional controls and lock levers provide optimum control of rpm and feed

3. High Torque Breakout

Automated high torque break out device breaks most rod joints automatically

4. Fail Safe Rod Clamp

Hydraulic open and spring close rod clamp results in fail safe operation

5. Direct Coupled Feed Frame

Direct coupled feed frame results in lower maintenance and smoother feed transmission

Semi-automated Rod Handling (Optional-not pictured)

Semi-automated rod handler (optional) makes handling of rods safer and easier

Drilling Depth Guidelines

Hole DepthHole Depth
Drill Rod/Core BarrelMetric (Meters)U.S. (Feet)
UpHorizontalDownUpHorizontalDown
ARQ™TK*65011501700213337735577
BRQ™4007401000147636093281
NRQ™25065070082021332297
HQ™12043034539414111132
NoteDepth capacity includes allowance for force required to break core using 10 MPa rock strength
*ARQ™ TK capacity shown for compaison purposes only. It is not recommended drilling practice to drill over 1500 m ARQ™ TK depth

Drill Specification

Feed Frame (700 Series)MetricU.S.
Feed Stroke1830 mm72 in
Max. rated pushing force53.9 kN @ 28.5 MPa12080 lbf @ 4130 psi
Max. rated pulling force81.4 kN @ 28.5 MPa18250 lbf @ 4130 psi
Rated carriage speed0.70 m/s per complete cycle3 ft/s per complete cycle
Normal rod handling speedApproximately 15 m/min.*Approximately 50 ft/minute*
NoteThe feed frame is reversible
*Actual rod handling speed may vary with working conditions

Chuck and Rod Holder

HQ™ ChuckPQ™ Rod Holder
Maximum opening97.0 mm (3.82 in)
Diameter corresponding to the
ID of the HQ
TM
guide bush
125 mm (4.875 in)
Diameter corresponding to the
ID of the PQ
TM
guide bush
TypeClosed hydraulically
Opened mechanically
Automatic synchronization
with rod holder
Closed mechanically
Opened hydraulically
Automatic synchronization
with chuck Manual overdrive
Jaws3 (same as used with chuck)2 (same as used with chuck)
Max. rated axial holding capacity85.0 kN* (19110 lbf*)130 kN* (33750 lbf*)
Max. rated static torsional holding capacityForward and reverse rotation
3900 N-m (2870 lbf*)
Forward and reverse rotation
5800 N-m (4255 lbf*)
*At 7 MPa (1015 psi) with new jaws and rods

Hydrostatic Pumps

Main PumpMetricU.S.
Feed StrokeAll drill functions
ManufacturerRexroth (Hydromatiik Gmbh)
Operating conditions as used on LM75™ drill: Maximum pressure28.5 MPa, forward rotation, reverse rotation, rod handling4130 PSI, forward rotation, reverse rotation, rod handling
Recirculation pumpOil cooling and charge pump
TypeGear, fixed displacement
ManufacturerRexroth (Hydromatick Gmbh)
Maximum pressure operating conditions as used on LM75™ drill1-1.5 Bar14.5-21.8 psi
Normal speed1480 RPM @ 50 Hz
1780 RPM@ 60 Hz
Hydraulic tank volume60 L15.8 Gal

Weights

Metric U.S.
Feed Frame 960 kg 2112 lbs
Rotation Unit w/chuck 235 kg 517 lbs
HQ™ Rod Clamp Assembly 170 kg 374 lbs
Control Panel w/o hoses 46 kg 101 lbs
Hoses 42 kg 92 lbs
Power Pack 1400 kg 3080 lbs

CE Certification

The CE marking certifies that a product meets EU consumer safety, health or environmental requirements.

Power Pack

Metric U.S.
Power 75 kW 101 hp

Wireline Hoist

Variable speed hydraulically driven c/w 500 m (1,640 ft) cable
TypeAll hydraulic, with proportional spooling control power up,
power down, hydraulically locked in neutral free wheel
override, chain driven spooling device
Line Pull
Bare Drum11.77 kN2649 lb
Full Drum4.51 kN1015 lb
Line Speed
Bare Drum0 - 100 m/min328 ft/min
Full Drum0 - 254 m/min833 ft/min
Drum Capacity
5 mm1400 m4600 ft
6 mm1000 m3280 ft
1/4"895 m2930 ft

Rotation Unit and Chuck Assembly

HQ™55 High Torque Rotation Unit c/w HQ™ Chuck AssemblyHQ™ capacity head with, hydraulic speed/torque control located on the control panel, 0-1300 nominal rpm maximum, includes hydraulic motor and pipe work complete with "break out device" for ease of undoing rod joints without the need to use wrenches. HQ™ capacity hydraulic operated spring return chuck and includes labels.
HQ™55 MkII Rotation Unit c/w HQ™ Chuck AssemblyHQ™ capacity head with, hydraulic speed/torque control located on the control panel, 0-1700 nominal rpm maximum, includes hydraulic motor and pipe work complete with "break out device" for ease of undoing rod joints without the need to usewrenches. HQ™ capacity hydraulic operated spring return chuck and includes labels.
HQ™75 MkII Rotation Unit c/w HQ™ Chuck AssemblyHQ™ capacity head with, hydraulic speed/torque control located on the control panel, 0-1700 nominal rpm maximum, includes hydraulic motor and pipe work complete with "break out device" for ease of undoing rod joints without the need to usewrenches. HQ™ capacity hydraulic operated spring return chuck and includes labels.
HQ75 High Torque Rotation Unit c/w HQ Chuck AssemblyHQ capacity head with, hydraulic speed/torque control located on the control panel, 0-1300 nominal rpm maximum, includes hydraulic motor and pipe work complete with "break out device" for ease of undoing rod joints without the need to use wrenches. HQ capacity hydraulic operated spring return chuck and includes labels.

Fluid Pump

Options Descriptions
520 Fluid Pump Triplex piston design hydraulic proportional control
0.76 lpm continuously variable
3.42 MPa max discharge pressure with relief valve fitted as standard
535 Water PumpTriplex piston design hydraulic proportional control
132 L/min continuously variable
3.42 MPa max discharge pressure with relief valve fitted as standard

Feed Frame Positioner

Hydraulically operated, it allows the angle and position of feed frame to be easily set.

360-Degree Turntable

This option can only be selected in conjunction with the feed frame positioner. The turntable enables the rig to be rotated without removing ground fixtures - Mechanical 360 degree rotation, c/w dump tilt cylinders.

Jack Legs

Available only if the positioner option is selected. The jack leg kits for Feed Frame positioner enables leveling in uneven ground. Complete with Counter Balance valve.

Towing Group for Feed Frame Positioner

Towing group with Removable stub shafts and forklift slots as standard.

Hydraulic Hose Hooks

Hooks that allow hydraulic hoses to be wrapped around the power pack. 6 hooks in a set.

Fluroescent Lights

2 x Fluorescent lights. Plugs into low voltage outlet on the starter

Remote Start/Stop

Allows start and stop of electric motor from control panel or other location

Air Blast Cooler

This cooler is used in lieu of the standard water cooler in locations where the cost to pipe water to a water oil cooler is high or where water is scarce.