MARKETS: Mineral Exploration, Mining, Environmental

The Boart Longyear LX™6 (DB525) is the larger rig in a family of multipurpose geotechnical rigs capable of wireline and conventional coring, as well as DTH, rotary and auger drilling methods. The LX™6 includes all of the same features as the LX™4 (DB520), but with an upgraded mast for higher depth capacity, and a more powerful drill head for increased torque and speed.

  • Multipurpose drilling capabilities and uses
  • Hydraulic mast raising
  • Integrated control panel
  • Optional automatic SPT hammer for testing and sampling
  • Wide range of available options


1. Technology

1000 mm mast dump for improved positioning on rough terrain

2. Innovation

Hydraulic side shift for easy rod-pulling and clear access to center line

3. Safety

Standard safety features include a safety cage, low speed and low torque rotation for safe rod management

4. Versatility

220 mm double clamp for making and breaking rod joints quickly and safely

5. Drill Anywhere

Powerful steel crawlers ensure mobility on difficult terrain

Drilling Depth Guidelines

Hole Depth MetersHole Depth U.S
Core drilling
BQ350 m1,148 ft
NQ350 m1,148 ft
NQ-VWall350 m1,148 ft
HQ273 m896 ft
HQ-VWall346 m1,135 ft
PQ85 m279 ft
Rotary drilling (Tricone)
Hole diameter 216 mm (8.5 in)175 m570 ft
Auger drilling
Hole diameter 150 mm (5.9 in)15-20 m49-65 ft
DTH drilling package
Maximum size DTH hammer98 mm (3-7/8 in) @ max 17,2 m3 / min @ max 24 bar
Maximum depth capacity290 m950 ft
Recommended hole size115 mm4.5 in
Maximum hole size127 mm5 in
Recommended rod size76.1 mm3 in
“The figures in these tables have been calculated using the pulling capacity of the mainline hoist with a fluid filled hole and an effective rock tensile strength of 5MPa. Actual drilling results may vary and will be affected by in-hole tools, fluid level in the hole, subsurface and other environmental conditions, drilling techniques, and equipment used”.

* BQ capacity is shown for comparison purposes only. It is not recommended drilling practice to drill over 2000 m BQ depth. Always verify manufacturers drill rod depth ratings prior to use.

Prime Mover

StandardDEUTZ D914 L04 air cooled engine, COM III, 4 cylinder
Fuel Consumption225 g/kWh
Maximum Power53 kW @ 2.300 rpm71 hp @ 2,300 rpm
Electrical Circut12V
Fuel Tank Capacity60 l16 gal

Prime Mover for Higher Ambient Temperature /

EngineDEUTZ BF4L914 air cooled engine, COM II, 4 cylinder turbocharged
Fuel Consumption223 g/kWh
Maximum Power72,4 kW @ 2.300 rpm94 hp @ 2,300 rpm
Electrical Circut12V
Fuel Tank Capacity60 l16 gal

Rotary Head DD52

Low Gear4,880 - 980 Nm / 52-265 rpm3,560 - 723 lb-ft / 52 - 265 rpm
High Gear1,855 - 360 Nm / 140 - 708 rpm1,368 - 265 lb-ft / 140 - 708 rpm
Bore - Inside Diameter62 mm2.44 in
Flushing Head - Inside Diameter22 mm0.87 in
Rotation MotorsDanfoss - variable / reversible with pressure remote
Top Drive Flange2 3/8” API Reg PIN
Hydraulic Motor at Max / Min Displacement, Diesel Engine at 2200 rpm
Gear Ratio1st - 7.68 : 12nd - 2.92 : 1
Rotary Head Carriage with Side Shift

Rotary Head HY79

Low Gear6,540 Nm / 39 rpm4,824 lb-ft / 39 rpm
High Gear320 Nm / 800 rpm236 lb-ft / 800 rpm
Bore - Inside Diameter52 mm2 in
Flushing Head - Inside Diameter24 mm1 in
Rotation MotorsParker V12-80 + Danfoss TMT 315
Top Drive Flange2 3/8” API Reg PIN
Gear Ratio4.047:1
Distance From Drilling Line to Chain435 mm17.12 in
Rotary Head Carriage with Side Shift

Hydraulic System

Primary Pump A10VO60Parker bent axis, fixed displacement
Maximum Flow66 lpm @ 2,200 rpm17.5 gpm @ 2,200 rpm
Maximum Pressure250 bar3,626 psi
Secondary Pump A11VO75Cassappa gear pump
Maximum Flow59 lpm @ 2,200 rpm15.5 gpm @ 2,200 rpm
Maximum Flow (2nd)48 lpm @ 2,200 rpm12.5 gpm @ 2,200 rpm
Maximum Pressure175 bar2,538 psi hp
Oil Tank Capacity200 l53 gal

Drill Mast and Feed System with Feed Cylinder

Feed Stroke4000 mm13.2 ft
Feed SpeedNormal / fast
Up12.5/31 m/min41/101 ft/ min
Down18/51 m/min59/167 ft/min
Pull down force34 kN7,673 lbf
Pull Back Force55 kN12,364 lbf
Drilling Inclination45° off horizontal to 90° vertical down
Mast Dump1000 mm3.3 ft
Max. Rod Length3000 mm10 ft

Main Winch

Line Pull30 kN6,744 lbf
Line Speed - Bare Drum29 m/min95 ft/min
Line Speed - Full Drum36 m/min118 ft/min
Cable Length, 14 mm35 m114.8 ft

Rod Clamps

Maximum Diameter220 mm8.6 in
Maximum Clamping Capacity175 kN4,500 lbf
Maximum Breaking Torque20,5 kNm15,120 lb ft

Centralizer - Rod Guide

Exchangeable Inserts for Rods56, 76, 89, 114, 127, 140, 168, 193, 220 mm (Choose required sizes)


TypeCrawler mounted with steel tracks
Max. Driving Speed1.5 km/hr1 mph
Axis Distance1715 mm67.5 in
Max. Ground Pressure0,053 MPa7.7 psi
Climbing Capacity60% (approx. 30°)
Optional UndercarriageTrailer Mounted, Skid Mounted

Mast Extension for Longer Rod Pull

Maximum Rod Pull2 x 3 m (6 m)20 ft
Fitted onto Standard Mast to Pull 6 m Rod
Rod Storage30 pieces of 76 mm (3 in) rods
Towing Hook on Rear of Rig
Air Connection on Rear of Rig for DTH Compressor

Weight and Measurements

Width1900 mm74.8 in
Pad Width300 mm11.8 in
Weight1035 kg2280 lb
Hammer Weight63.4 kg140 lb
Drop Stroke760 mm30 in
Total Weight180 kg397 lb
DB525 With Rotary Head HY79
Height2784 mm109.5 in
Width1950 mm76.6 in
Mast Length6700 mm263.5 in
Complete Height7970 mm313.5 in

Wireline Winch

Line Pull - Bare Drum6,5 kN1461 lbf
Line Pull - Full Drum4,0 kN90 lbf
Line Speed - Bare Drum100 m/min327 ft/min
Line Speed - Full Drum200 m/min656 ft/min
Cable Length 5 mm350 m1150 ft

Mud Pump DP100

Continuous Flow90 l/min23.7 gpm
Pressure30 bar435 psi

Mud Pump W1122BCD

Continuous Flow130 l/min34 gpm
Pressure60 bar870 psi

FMC Pump L0918

Flow100 l/min26 gpm
Pressure45 bar652 psi

Standard Penetration Test (SPT) Auto Hammer

Impact Rate1-30 bpm
Travel Length762 mm30 in
Hammer Weight Brazil63,5 kg140 lb

Oil Line Lubricator For DTH Drilling

Tank Capacity10 l2.7 gal

High Temperature Oil Cooler

Upgraded Oil Cooler For Ambient Temperatures Over 35°C (95°F)

Night Lights

No. of Pieces4

Jaw Body for Clamp and Break Out for Coring

Jaw Plates For CoringBQ™ / BW
(Choose Required Sizes)NQ™/NW

Mist Pump

Flow30 l/min8 gpm
Pressure200 bar2,900 psi


Auxiliary Work Vice180 mm wide, 220 mm long, 120 mm deep clamp, rotating mounting base and separate rod support work bracket
Remote ControlRadio remote control for driving
Auxiliary Diesel Filling PumpElectric powered diesel filling pump
Instrument Vandal CoversLockable covers for control panels and instruments
Rubber Crawler PadsFull set (76 pcs)
Tool BoxWith necessary set of tools for basic maintenance and lubrication
Environmental Oil In Hydraulic System

Centralizer - Rod Guide

Exchangeable Inserts for Rods76, 89, 114, 127, 140, 168, 193, 220 mm (Choose required sizes)