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)