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LF™70

MARKETS: Mineral Exploration

The LF™70, one of the most recognized small-format drills in the industry, is a flyable rig with a depth capacity of 700 m that can be assembled in less than an hour. With its innovative modular design, this lightweight exploration rig is ideal for drilling in remote locations.

  • Self contained operator panel with manually operated hydraulic control valves
  • 5.4 ton capacity mainline hoist
  • 6.4 ton pullback with 6 m pull, direct-coupled feed cylinder with 1.83 m stroke
  • Hollow spindle rotation unit with 4-speed transmission (HQ™ & PQ™ configurations available)
  • Nitro-Chuck™ with 133 kN holding capacity
  • Hydraulic powered rod clamp with BQ™ rod to HWT casing jaw sizes
  • 45 degree - 90 degree angle capability
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  • Features
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LF™70 Features

1. Solid Structural Design

Rigid design provides superior performance and reliability even under the toughest conditions.

2. Nitro Chuck™

The patented nitrogen gas spring jaws with hydraulic open/spring close function ensuring fail safe operation.

3. Simple Hydraulic Design

Direct-coupled hydraulic pumps with a PTO-driven auxiliary pump allow for easy maintenance.

4. Flyable

The LF™70 easily breaks down into seven flyable modules with a maximum weight of 585 kg

5. PQ Rotation Unit

Four-Speed transmission delivers high torque when needed and high speed for diamond drilling

6. Self-Contained Operator Panel

The simple hydraulic system is easy to operate and maintain while lift-to-shift levers provide additional operator safety

Drilling Depth Guidelines

 
Dry Hole
Fluid Filled
Drill Rod / Core BarrelHole Depth (meters)Hole Depth (feet)Hole Depth (meters)Hole Depth (feet)
BRQ / BQ9072,9761,0393,407
BRQTK / BQTK1,1423,7461,3084,292
NRQ / NQ / NQ26982,2907982,619
NRQ V-Wall™7892,5888952,936
HRQ / HQ4731,5535421,778
HRQ V-Wall™5961,9556742,210
PHD / PQ3131,0263571,171
PHD V-Wall™4261,3994781,567

Prime Mover

 
Metric
U.S.
Standard UnitCummins QSB 4.5 L, 4 cylinder, turbo charged, after cooled diesel engine.
Displacement4.5 L275 in3
Power (maximum) at 2,300 RPM110 kW148 hp
Emissions CertificationCARB Tier 3 - EU Stage IIICARB Tier 3 - US EPA
Fly Weight585 kg1290 lbs
Displacement4 L263 in3
Power (maximum) at 2,450 RPMPower (maximum) at 2,450 RPM72 kW98 hp
Emissions CertificationTier 2
Fly Weight510 kg1,124 lb

HQ Drill Head - Standard

 
Metric
U.S.
Standard HQ - Hollow Spindle
Maximum Rod Diameter95 mm4 in
Rotation MotorRexroth hydraulic motor - variable/reversible
Mechanical TransmissionFunk 4 speed
Ratios1st6.63:1
2nd3.17:1
3rd1.72:1
4th1.00:1
Final DriveRoller chain drive
Ratio2.58:1
Head OpenerPivot style — manual operation
Hydraulic HQ ChuckPatented Nitro-Chuck™
Hydraulically opened, nitrogen gas spring closed.
Axial holding capacity of 133 447 N (30,000 lbf)
Drill Head LubricationForce fed bearings, oil bath for roller chain - PTO driven
Drill Head Lubrication Oil Filtration25 Micron high pressure oil filter
Fly Weight390 kg860 lb

Torque and RPM Ratings - HQ Head

(Hydraulic motor at maximum/minimum displacement, prime mover at 2,200 RPM)
Speed (no load)Torque (stall)#colspan#
RPMNmlbft
1st Gear95 - 1904,610 - 2,3053,400 - 1,700
2nd Gear200 - 4002,170 - 1,0851,600 - 800
3rd Gear370 - 730950 - 610700 - 450
4th Gear630 - 1,250680 - 340500 - 250
NOTE: Head output speed and torque are infinitely variable in each gear range as indicated.NOTE: Head output speed and torque are infinitely variable in each gear range as indicated.
Actual rotation speed is affected by engine RPM and hydraulic motor displacement setting.Actual rotation speed is affected by engine RPM and hydraulic motor displacement setting.

PQ Drill Head - Optional

 
Metric
U.S.
Optional PQ - Hollow Spindle
Maximum Rod Diameter122 mm5 in
Rotation MotorRexroth hydraulic motor - variable/reversible
Mechanical TransmissionFunk 4 speed
Ratios1st6.27:1
2nd3.12:1
3rd1.75:1
4th1.00:1
Final DriveStraight cut gears
Ratio2:1
Head OpenerPivoting style: manual operation
Hydraulic PQ ChuckPatented Nitro-Chuck™
Hydraulically opened, nitrogen gas spring closed
Axial holding capacity of 222 400 N (50,000 lbf)
Drill Head LubricationForce fed bearings, oil bath for gears - PTO driven
Drill Head Lubricating Oil Filtration25 micron high pressure oil filter
Fly Weight580 kg1,279 lb

Torque and RPM Ratings - PQ Head

Metric U.S.
 (Hydraulic motor at maximum/minimum displacement, prime mover at 2,200 RPM)
Speed (no load) Torque (stall)
RPM Nm lbft
 1st Gear 122 - 199 5 322 - 3 254 3,925 - 2,400
 2nd Gear 246 - 400 2 648 - 1 620 1,953 - 1,195
 3rd Gear 439 - 714 1 486 - 908 1,096 - 670
 4th Gear 769 - 1,250 849 - 519 626 - 383
 NOTE: Head output speed and torque are infinitely variable in each gear range as indicated.
 Actual rotation speed is affected by engine RPM and hydraulic motor displacement setting.

Hydraulic System

 Primary Pump Axial piston, variable displacement load sensing, pressure compensated with low pressure standby.
 Max Flow 163 L/m 43 gpm
 Maximum Pressure (factory setting)241 bar3,500 psi
 Secondary PumpAxial piston, variable displacement load sensing, pressure compensated with low pressure standby.
 Max Flow42 L/m11 gpm
 Maximum Pressure (factory setting)138 bar2,000 psi
 Auxiliary PumpAxial piston, variable displacement load sensing, pressure compensated with low pressure standby.
 Max Flow 42 L/m 11 gpm
 Maximum Pressure (factory setting)138 bar 2,000 psi
 Hydraulic Tank Capacity114 L30 Gal

Drill Mast and Feed System

MetricU.S.
Feed Stroke2 m6 ft
Pull Capacity @ 2,000 psi6,414 kg14,137 lbf
Thrust Capacity @ 2,000 psi4,231 kg9,326 lbf
Rod Pull3 or 6 m10 or 20 ft
Drilling Angle45° off horizontal to 90° vertical down#colspan#
Mast Dump (Crowd)N/A#colspan#

Draw Works

 MetricU.S.
 Main LIne HoistSingle speed motor
 Hook Load (single part line)
 Bare Drum5 450 kg12,000 lb
 Hoisting Speed (single part line)
 Bare Drum1 m/min3 ft/min
 Main Hoist Cable15 mm0.59 in
 Minimum Breaking Strength23 042  kg50,800 lb
 NOTE: Do not use multiple part lines with the main line hoist, use single part line ONLY.  
 Foot Clamp CapacityHWT
 Wireline Hoist
 Level Wind                               N/A
 Line Pull
 Bare Drum990 kg2,190 lb
 Full Drum227 kg502 lb
 Line Speed  
 Bare Drum100 m/min337 ft/min
 Full Drum433 m/min1,470 ft/min
 Drum Capacity
(4.8 mm/3/16” swaged)
1 890 m6,200 ft
 Minimum Breaking Strength2 268  kg5,000 lb
 NOTE: Wireline cable length to be specified at time of order.

Additional Information

MetricU.S.
Fuel Tank Capacity57 L15 Gal

Fuel Tank Capacity

MetricU.S.
Fuel Tank Capacity57 L15 Gal

Weights

Weight - Fly Drill = 3,220 kg (6,500 lb)
Consisting of:
Cummins 4.5 L QSB , Tier 3, 4 cylinder, water cooled, turbo charged, diesel engine
Hydraulic Module
Draw Works Grp. c/w 12,000 lb Main Line Hoist, Wireline Hoist
3 Piece Lattice Mast Assembly
HQ Rotation Unit Grp. c/w Nitro-Chuck™
Base Frame
Fuel Tank (57 L/15 US gal)
Battery - 12V
Stabilizer Legs (4)

Hydraulic Rod Clamp

The hydraulic rod clamp is mounted on the foot of the drilling mast and substitutes the holding up tool, wrenches, ball cone clamp and rod guide. This is significantly increases the efficiency and speed of
un- and on-screwing the rods .
It comes equipped for BQ™ rod to HWT casing jaw sizes.

Decals Available in Multiple Languages

English Decals
Spanish Decals
Russian Decals

Rotation Unit

OptionsDescription
HQ Rotation Unit GroupThis is a flyable option with weight of 376 kg
Maximum Rod Diameter: 95 mm
Rotation Motor Rexroth hydraulic motor - variable/reversible
Mechanical Transmission Funk 4 speed
Ratios1st6.63:1
2nd3.17:1
3rd1.72:1
4th1.00:1
Roller chainFinal Drive with gear Ratio 2:1
Head OpenerPivot style — manual operation
Patented Nitro-Chuck™Hydraulically opened, nitrogen gas spring closed
Axial holding capacity of 133 447 N (30,000 lbf)
Drill Head LubricationForce fed bearings, oil bath for roller chain - PTO driven
Drill Head Lubrication Oil Filtration25 Micron high pressure oil filter
PQ Rotation Unit Group This is a non flyable option with weight of 580 kg
Maximum Rod Diameter: 122 mm
Rotation Motor Rexroth hydraulic motor - variable/reversible
Mechanical Transmission Funk 4 speed
Ratios1st6.27:1
2nd3.12:1
3rd1.75:1
4th1.00:1
Final Drive Straight cut gears Ratio 2:1
Head Opener Pivoting style: manual operation
Hydraulic PQ Chuck™
Patented Nitro-Chuck™Hydraulically opened, nitrogen gas spring closed
Axial holding capacity of 222 400 N
Drill Head LubricationForce fed bearings, oil bath for gears - PTO driven
Drill Head Lubricating Oil Filtration25 micron high pressure oil filter
Fly Weight580 kg1,279 lb

Water Cooler for Hydraulics

Improves hydraulic efficiency if ambient air temp is above 30 deg celsius or when hyd oil temp in reservoir is operating above 71 deg celsius.

Mast Raising Cylinders

The dual acting mast raising cylinders are equipped with counterbalance valves for safe mast positioning.

Wireline Cable

OptionsDescription
Full DrumThe wireline drum is spooled with 4000 ft of 3/16 cable
Half DrumThe wireline drum is spooled with 2000 ft of 3/16 cable

Towing Package

The towing package** includes:
Tow Bar
Idler Hubs (2)
Wheel Assemblies (2)
** the package is not highway rated.

Fluid Circulation Pumps

OptionsDescription
W11 PumpThis triplex mud pump is the pump of choice for diamond drilling.

Output: 132L/m @ 55 Bar (35GPM @ 900PSI

Direct coupled hydraulic motor for long life and serviceability

Each pump module is equipped with a relief valve, pressure gauge, suction and discharge assemblies, lifting bar and skid base

Infinitely variable water pump speeds controlled from the operators console for optimum control

Mud Mixer

Having a reliable mud mixer in the field is an integral part of the drilling process, because drilling additives require a homogenous slurry mix to make the most of their lubricating and/or stabilizing properties
The robust, reliable and durable slurry/mud mixer has a max speed of 2300rpm at full flow
Powered directly from the drill rig’s hydraulic system, it is tough enough to operate in any drilling environment

Mud Tank

This Mud Tank holds 250 gallons of drilling fluid and has 4 outriggers for support.

Rod Rack Platform

Enables vertical stacking for quick adding and removing of rods during drilling.
Horizontal racking of rods saves space during storage or transportation.

Hand Held Tachometer

Incorporating the precise laser technology and user-friendly functions this tachometer provides exceptional accuracy in measuring speed and length via a 12” wheel; the larger wheel rotates more slowly than a standard 6” wheel, enabling reliable and safe registration of high speeds. The instrument also features a contact adapter, conveniently allowing both non-contact and contact measurement.

Tool Kit

This tool kit comes equipped with a set of handy tools for performing general maintenance on the drill.

Paint

Standard Boart Longyear™ Paint Colors
Customer Specified Custom Paint Colors
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