Boart Longyear LF 70

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Boart Longyears LF 70 is the most recognized small-format drills in the industry. It is a flyable rig with a depth capacity of 700 m that can be assembled in less than an hour. This lightweight exploration rig is ideal for drilling in remote locations, with it innovative modular design.

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

PLEASE CONTACT ATLAS MINING AND MANUFACTURING FOR PRICING AND AVAILABILITY.

	Metric	U.S.
Drill Capacity	895 m (NRQ™ V-Wall)*	2,936 ft (NRQ™ V-Wall)*
Drill Rod Size	BQ - PQ	BQ - PQ
*The figures in these tables are estimates which have been calculated using the applicable pullback capacity of the drill. Actual drilling results may vary and will depend on in-hole tools, subsurface and other environmental conditions, drilling techniques and equipment used.

	Metric	U.S.
Feed Stroke	2 m	6 ft
Pull Capacity @ 2,000 psi	6,414 kg	14,137 lbf
Thrust Capacity @ 2,000 psi	4,231 kg	9,326 lbf
Rod Pull	3 or 6 m	10 or 20 ft
Drilling Angle	45° off horizontal to 90° vertical down	#colspan#
Mast Dump (Crowd)	N/A	#colspan#

	Metric	U.S.
Standard Unit	Cummins QSB 4.5 L, 4 cylinder, turbo charged, after cooled diesel engine.
Displacement	4.5 L	275 in³
Power (maximum) at 2,300 RPM	110 kW	148 hp
Emissions Certification	CARB Tier 3 - EU Stage III	CARB Tier 3 - US EPA
Fly Weight	585 kg	1,290 lbs
Displacement	4 L	263 in³
Power (maximum) at 2,450 RPMPower (maximum) at 2,450 RPM	72 kW	98 hp
Emissions Certification	Tier 2
Fly Weight	510 kg	1,124 lb

	Metric	U.S.
Standard Unit	Cummins QSB 4.5 L, 4 cylinder, turbo charged, after cooled diesel engine.
Displacement	4.5 L	275 in³
Power (maximum) at 2,300 RPM	110 kW	148 hp
Emissions Certification	CARB Tier 3 - EU Stage III	CARB Tier 3 - US EPA
Fly Weight	585 kg	1,290 lbs
Displacement	4 L	263 in³
Power (maximum) at 2,450 RPMPower (maximum) at 2,450 RPM	72 kW	98 hp
Emissions Certification	Tier 2
Fly Weight	510 kg	1,124 lb

(Hydraulic motor at maximum/minimum displacement, prime mover at 2,200 RPM)
	Speed (no load)	Torque (stall)
	RPM	Nm	lbft
1st Gear	95 - 190	4,610 - 2,305	3,400 - 1,700
2nd Gear	200 - 400	2,170 - 1,085	1,600 - 800
3rd Gear	370 - 730	950 - 610	700 - 450
4th Gear	630 - 1,250	680 - 340	500 - 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.

	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.

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 bar	3,500 psi
Secondary Pump	Axial 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
Auxiliary Pump	Axial 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 Capacity	114 L	30 Gal

	Metric	U.S.
Main LIne Hoist	Single speed motor
Hook Load (single part line)
Bare Drum	5,450 kg	12,000 lb
Hoisting Speed (single part line)
Bare Drum	1 m/min	3 ft/min
Main Hoist Cable	15 mm	0.59 in
Minimum Breaking Strength	23,042 kg	50,800 lb
NOTE: Do not use multiple part lines with the main line hoist, use single part line ONLY.
Foot Clamp Capacity	HWT
Wireline Hoist
Level Wind	N/A
Line Pull
Bare Drum	990 kg	2,190 lb
Full Drum	227 kg	502 lb
Line Speed
Bare Drum	100 m/min	337 ft/min
Full Drum	433 m/min	1,470 ft/min
Drum Capacity (4.8 mm/3/16” swaged)	1,890 m	6,200 ft
Minimum Breaking Strength	2,268 kg	5,000 lb
NOTE: Wireline cable length to be specified at time of order.