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    S250-M3

    MARKETS: Mining

    The new S250-M3 has significantly improved the industry standard S250 offering 3 primary configurations as well as advanced noise suppression.

    • Less Noise: Independent testing reported the S250-M3 produced 50% (6 dBA) less sound pressure than the leading competitor rock drills.
    • Less Cost: Due to reduced amount of energy transferred into the components of the S250-M3, less wear is experienced.
    • More Torque and Penetration: The S250-M3 channels more energy to the face of the rock and less into the body of the driller operating it.
    • Improved Efficiency: Torque increased by 39% and penetration by over 6 inches per minute at 110 psi.

    S250-M3 Rock Drill

    Muffled Design

    Patented Design drastically reduces operating noise, while significantly decreasing vibration.  Drillers benefit from the full production of the S250 without the fatigue.

    Premium Materials

    The S250-M3 uses premium material, machined to exacting specifications to deliver high performance and exceptional durability.

    Proven Technology

    Boart Longyear's S250-M3 rock drill is based on the well established, market-leading S250 design.

    UHex 22 MM and 25 MM Chuck Ends

    Boart Longyear provides both 22 mm and 25 mm hex chuck ends to accommodate popular steel sizes.

    Services and Training

    Boart Longyear offers on-site services training and complete rebuild and overhaul service to ensure optimal drill performance and extended life.

     

    Jackleg / Sinker Rock Drill Specification

    MetricU.S.
    Bore79.4 mm3.126 in
    Stroke73.25 mm2.884 in
    Blows / Minute2200 @ 6.2 bar90 psi
    Air Consumption4.4m3/min @ 6.2 bar156 cfm @ 90 psi
    Air Connection-1 in BSP
    Water Connection-1/2 in BSP
    Weight38.1 kg84 lb

    Stoper Drill Specification

    MetricU.S.
    Bore79.4 mm3.126 in
    Stroke73.25 mm2.884 in
    Blows / Minute2200 @ 6.2 bar2200 @ 90 psi
    Air Consumption4.4m3/min @ 6.2 bar175 cfm @ 90 psi
    Air Connection-1 in BSP
    Water Connection-1/2 in BSP
    Weight43.5 kg96 lb
    Standard Airleg Weight15.5 kg34 lb

    Supply Hose ID (required)

    MetricU.S.
    Air 25 mm 1 in
    Water 12 mm 1/2 in

    Steel Size (HEX) - Chuck End

    MetricU.S.
    Standard22 mm HEX x 108 mm long7/8 in HEX x 4-1/4 in long
    Optional25 mm HEX x 108 mm long1 in HEX x 4-1/4 in long
    * Drill designed to accept collared/tapered HEX steel to ISO standard 723

    Standard S250-M3 Airleg (Sold Separately)

    MetricU.S.
    Bore Diameter68 mm2.677 in
    Stroke Length1295 mm51 in
    Thrust230 kg at 6.2 bar506 lb @ 90 psi

    Accessories

    Football Style Lubricator
    4 hours drilling capacity with S250 rockdrill
    Install in line, within 3.5 m (12 ft) of rockdrill
    Weight: 4.8 kg (10.6 lb)
    Capacity: 600 mL (36.6 in3) rockdrill oil
    Min/Max Adjustment: 1/4 turn

    Optional S250-M3 Airleg (Sold Separately)

    MetricU.S.
    Stroke Length991 mm39 in
    Stroke Length762 mm30 in

    Noise Emissions*

    MuffledNoise Pressure 113.5 dB(A)
    Power 126.5 dB(A)
    UnmuffledNoise Pressure 116.0 dB(A)
    Power 129.0 dB(A)
    Notes:Noise levels are measured in accordance with ISO3744 and SANS1470 (Part 4)
    Boart Longyear has done extensive research and testing in noise reduction and have found that a proper hearing conservation program is an effective means of dealing with elevated noise levels.

    Steel Size (Hex) - Chuck End

    MetricU.S.
    Bore Diameter68 mm2.677 in
    Stroke Length1295 mm51 in
    Thrust230 kg at 6.2 bar506 lb @ 90 psi

    Mounting Option

    OptionMuffledLengths/StrokesWater Valve
    JacklegWith or Without3 Airleg options
    StoperWith or Without3 Airleg optionsWith or without
    SinkerWith or Without

    Base Options

    Sinker Conversion Kit
    S250 Drill Repair Kit
    Football Lubricator