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
| |
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. |
| 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. |
| 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. |
| 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. |
| |
Metric |
U.S. |
| Fuel Tank Capacity |
57 L |
15 Gal |
| 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) |
