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    Diamond Core Drill

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    Diamond Core Drill Machine, 90mm, 1400W

    Diamond Core Drill Machine, 90mm, 1400W

    T-DCDM-90
    Buy diamond drilling machine in bulk online, it is cheap, possesses 90mm diameter hole capacity, 1.4KW electric power, 1800 r/min working speed, and is widely used to drill holes on various construction materials including reinforced concrete, brick, rocks, ceramics.
    $107.69
    Diamond Core Drill Machine, 130mm, 1650W

    Diamond Core Drill Machine, 130mm, 1650W

    T-DCDM-130
    Diamond core drill rig with economic price is powered by 1650W electrical motor and operates at 1800 r/min step-less, max drilling diameter up to 130mm speed, characterized by flexible mobility and safety and reliability .
    $119.23
    Diamond Core Drill Machine, 150mm, 1800W

    Diamond Core Drill Machine, 150mm, 1800W

    T-DCDM-150
    Concrete hole drill with good price works with 2000 r/min no-load speed, 1800 watt available in 50Hz / 60Hz, 110V / 220V / 240V system, vertical use to cut up to 150mm (6 inch) holes in reinforced concrete, brick and other instruction materials.
    $130.77
    Diamond Core Drill Machine, 160mm, 3200W

    Diamond Core Drill Machine, 160mm, 3200W

    T-DCDM-160
    Buy best vertical drilling machine instruction tool at cheap price, it operates at 6.3 inch diameter hole capacity, 3200 watt rated power, 800 r/min working speed, with no dust operations, high efficiency and accuracy, smooth wall.
    $346.15
    Diamond Core Drill Machine, 180mm, 3380W

    Diamond Core Drill Machine, 180mm, 3380W

    T-DCDM-180
    Best vertical drilling machine instruction tool with cheap price is widely used to cut holes from 0.6" to 7" diameter in walls, floors, glass and other instruction materials, works at 3380 watt rated power, 750 r/min no-load speed, efficient and convenient to operate.
    $438.46
    Diamond Core Drill Machine, 200mm, 3650W

    Diamond Core Drill Machine, 200mm, 3650W

    T-DCDM-200
    Buy diamond core drill machine for sale, it works at 200mm diameter hole capacity, 3650W rated power, 700 r/min step-less speed, 50Hz or 60Hz 110V / 220V / 240V AC voltage, applicable to construction, quality inspection, installation areas.
    $509.60
    Diamond Core Drill Machine, 230mm, 3880W

    Diamond Core Drill Machine, 230mm, 3880W

    T-DCDM-230
    Wholesale vertical drilling machine construction tool with favorable price is designed to drill through various types of instruction materials, works with 9 inch diameter hole capacity, 3880 watt rated power, 600 r/min step-less speed, features in high-efficiency, smooth hole-wall and accurate dimensions.
    $553.85
    Diamond Core Drill Machine, 250mm, 3950W

    Diamond Core Drill Machine, 250mm, 3950W

    T-DCDM-250
    Wholesale 9.8 inch core drill at a reasonable price operates with 3950W full copper motor, 580 r/min step-less speed. Vertical use for drilling holes on different instructional materials with high efficiency.
    $595.77
    Diamond Core Drill Machine, 300mm, 4350W

    Diamond Core Drill Machine, 300mm, 4350W

    T-DCDM-300
    Diamond core drill machine has a competitive price, powered by 4350W electric motor, features 760 r/mins no-load speed, 300mm max. drilling depth. Applicable for drilling holes on different construction materials .
    $823.08
    Diamond Core Drill Machine, 350mm, 4680W

    Diamond Core Drill Machine, 350mm, 4680W

    T-DCDM-350
    Buy diamond drilling machine at an affordable price, it is equipped with 4680W electric power, no-load speed up to 600 r/mins, max. drilling depth 350mm. Portable use, ideal for drilling holes on different construction materials.
    $915.38
    Diamond Core Drill Machine, 400mm, 4980W

    Diamond Core Drill Machine, 400mm, 4980W

    T-DCDM-400
    Best multifunctional diamond core drill for sale, it features 400mm diameter hole capacity, 4980W powerful electric power, 580 r/min step-less speed, can be used for many different purposes in construction, quality inspection, installation areas.
    $1,246.15
    Diamond Core Drill Machine, 500mm, 6880W

    Diamond Core Drill Machine, 500mm, 6880W

    T-DCDM-500
    Vertical drilling machine with competitive price features 9.8 inch diameter hole capacity, 6880W powerful electric motor and 480 r/min step-less speed, designed with soft starting as well as overcurrent protection, easy for raising / lowering drilling depth.
    $1,515.38

     

    Diamond core drill machine features detailsIntroduction to diamond core drill

    Diamond is the hardest natural material in the world, which is ideal for creating holes on various materials including concrete, metal and glass. While diamond drilling is a form of drill core that uses a rotating drill bit with a diamond drill bit to make accurately measured openings. A diamond core drill based on this technique, also called concrete drilling machine, is a precision construction tool that can create clean and accurate holes.

    Unique Features

    • Since diamond core drill embraces a non-percussive technique, the integrity of the surrounding structure is maintained during drilling. Each diamond core drill bit injects water into the drive shaft to ensure that there is no dust in the working space.
    • All the full copper motors of diamond core drill machines operate with wide ranging rated power (1400W, 1650W...to 6880W), diameter hole capacity (90mm, 130mm...to 500mm) and offer various step-less speed.
    • The diamond core drill is designed with safe and reliable devices, such as friction clutch, external carbon brush, soft starting device, overcurrent protection, cooling water connection as well as pure copper power cord and features in high efficiency, lighter and steadier material, smooth & accurate holes, flexible mobility and reliable saftety.
    • The diamond core drills for sale at Tool.com offer high quality, factory price and free shipping.

    Wide Application

    The drilling machine can be operated in either vertical or horizontal directions as required, is used to drill holes on reinforced concrete, rocks, masonry, ceramics, glass and fire-proof materials, and is widely applicable for quality inspection, construction of airport runway, railway, bridges and tunnel, and installation of water, electricity, heat and gas. 

    Troubleshooting of diamond core drill 

    Symptoms

    Immediate actions

    Possible cause

    Remedy

    Drill bit sticks. 

    Cut off the power.

    1. There are water, sand or stone in the concrete to make the center of drill bit offset.

    Use a wrench to slowly turn and pull out the drill bit, increase the water supply pressure.

    2. Excessive clearance between column and slide block.

    Check machine frame to adjust the clearance.

    3. Serious radial wear of the drill.

    Replace the drill rig.

    4. Very few cooling water or no water.

    Add enough water.

    Drilling capacity declines.

    Check the drill bit.

    1. The new drill rig is not regrinded.

    Drill several holes to regrind the bit.

    2. Drill bit quality is not qualified.

    Replace the drill rig.

    3. Drill bit wears.

    Replace the drill rig.

    4. Drill bit barrel is tapered or deformed.

    Replace the drill rig.

    5. Drill bit jumps too much.

    Replace the drill rig; check the drill spindle'movement; repair the drill bit positioning; install the drill bit in place.

    Check drainage.

    1. Low water supply pressure.

    Fix the rack.

    Check the hole drilling.

    1. The center line of the drill bit is not parallel to the center line of the guide rail.

    Repaire the rack.

    2. The quality of the concrete is not high, there are small stones.

    Clean the hole wall and take out the stones and sands.

    3. The power socket is connected incorrectly.

    Have an electrician for inspection.

    4. The power supply is not grounded.

    Connect the ground wire.

    5. The charged body is not well insulated from the shell.

    Repair is needed.

    Too much motor sparks.

    Cut off the power.

    1. The brush holder is loose.and the commutator surface is seriously damaged.

    Fasten the brush holder.

    2. The brush is severely worn.

    Replace the brush.

    3. The surface of the commutator severely damages the brush and commutator connection.

    Commutator needs reparing or replacement.

    4. The rotor and stator are faulty.

    Repair is needed.

    The no-load current is too large.

    Cut off the power.

    1. Electromechanical failure.

    Repair is needed.

    The no-load sound is abnormal.

    Cut off the power.

    1. The power supply voltage is too high.

    Adjusted the power supply voltage.

    2. Drill bit is not installed in place.

    Tighten the drill bit to make sure it is installed in place.

    High vibration.

    Cut off the power.

    1. The fan blade is damaged and deformed.

    Repair is needed.

    2. Electromechanical failure.

    Repair is needed.

    The motor does not rotate after power-on.

    Cut off the power.

    1. Power supply voltage is too low.

    Adjusted power supply voltage to standard one.

    2. The motor is burned out.

    Repair is needed.

    The motor temperature is too high.

    Cut off the power.

    1. Fan blade is loose.

    Repair is needed.

    2. Bearing damages.

    Repair is needed.

    3. The motor failure.

    Repair is needed.

    The motor rotates but the main shaft doesn't when drilling.

    Cut off the power.

    1. The gear teeth of the rotor shaft are broken.

    Repair is needed.

    2. Reducer failure and clutch is loose.

    Tighten the clutch nut and replace the clutch plate.

    The core cannot be taken out of the drill bit barrel.

    Cut off the power and remove the drill bit.

    1. There are sands, iron filings, etc. between the drill bit barrel and the core.

    Rinse the inner barrel of drill bit with water and then carefully remove the core.

    2. The core burrs are too large and stuck on the inner wall of the drill bit.

    Rinse the inner tube of the drill bit with water and then carefully remove the core. When the hole is about to drill through, the drill must be slow during when drilling.