Professional Concrete Core Drill Machine

It is a high-performance core drilling rig designed for frequent drilling in concrete and reinforced concrete for tasks such as creating holes for plumbing, electrical conduits, anchor bolts and sampling.

The product listing specifies three speeds with corresponding maximum core diameters: 1400 r/min — up to 400 mm; 2800 r/min — up to 200 mm; and 3120 r/min — up to 100 mm. (The original spec included "31200 r/min", which appears to be a typo; confirm exact rpm with the manufacturer or product manual.)

Yes. It has a quick-release bracket that allows angular drilling from 0 to 90 degrees for angled core holes.

Yes. The rig includes castors for faster movement on site and can be fitted with an optional vacuum suction cup base to mount without a permanent fixing bracket, making setup quicker and more flexible.

It is designed for drilling through concrete and reinforced concrete. For other materials (masonry, stone, asphalt, etc.) check compatibility of the core bit and drilling method first.

The full magnesium alloy die-cast aluminum column gives high precision, reduced weight, high strength, and improved resistance to oxidation and corrosion compared with plain aluminum or steel columns.

The drill uses three speed-regulating gears to extend the drilling range and match torque to core diameter. Gears are precision-made and heat-treated for hardness and wear resistance, and they run in a liquid gear oil bath to ensure adequate lubrication and cooling, which protects the motor and improves efficiency.

Yes—if equipped with the optional vacuum suction cup base you can operate without a fixing bracket. For the safest operation, ensure the vacuum base is rated for the load and surface, or use the fixing bracket or other secure anchoring when required.

The description lists "PRODUCT ATTACHMENT" but does not specify details. Common attachments for core drilling rigs include core bits of various sizes, water feed for wet drilling, feed handles, a vacuum base (optional), and mounting brackets. Confirm the exact included items with the seller or product sheet.

The product description does not explicitly state, but core drilling in concrete is commonly done wet to reduce dust, cool the bit and increase bit life. Always follow the core bit manufacturer's guidance and local regulations for dust control when considering dry drilling.

Regularly check and maintain gearbox oil level (liquid gear oil bath), inspect gears and seals, keep the column and feed mechanism clean and lubricated, check mounting hardware and vacuum base integrity, and service/replace motor brushes or bearings per the manual. Follow the manufacturer's maintenance schedule.

Use appropriate PPE (eye protection, hearing protection, gloves, dust control), secure or use the vacuum base properly, ensure stable mounting before drilling, use water suppression for wet drilling where appropriate, avoid loose clothing, and follow lockout procedures for maintenance. Also follow local site safety rules and the machine manual.

Match the core diameter to the machine's speed/torque capability: larger diameters require lower speeds and higher torque (use the lowest gear for the largest cores). Choose the bit type for concrete/reinforced concrete and follow the bit manufacturer's recommended rpm range. If in doubt, consult the product manual or supplier.

Warranty and after-sales support are not specified in the description. Check the seller's or manufacturer's warranty policy and available service centers before purchase.

Contact the manufacturer or the authorized dealer who sold the machine for spare parts, consumables (core bits, seals), and technical support. Keep your model number (DLF-44) and purchase information handy when requesting service.