Diamond Core Drill Bit INDIAN PROFESSIONAL KORONA M14 115 mm — dry drilling

Diamond core drill bit INDIAN PROFESSIONAL KORONA M14 115 mm is designed for dry drilling of hard, abrasive materials where diamond cutting edges ensure precise and efficient coring. The bit features an M14 threaded connection for compatibility with angle grinders and similar rotary tools, and a 115 mm cutting diameter suitable for creating clean circular openings for installations, plumbing, and ventilation. Engineered for professional use, this core bit balances cutting speed and durability for repetitive tasks on surfaces that would quickly wear conventional bits.

Advantages

The diamond-segmented rim provides consistent performance during dry cutting, offering extended life compared with non-diamond bits when working on reinforced concrete, masonry, tiles, and similar materials. The M14 thread enables quick mounting on a wide range of handheld grinders and drivers without additional adapters. The bit’s construction minimizes vibration and helps maintain accuracy of hole diameter under typical jobsite conditions.

Suitable for

• Dry coring of concrete and reinforced concrete
• Creating openings in brick, blockwork and masonry
• Cutting holes in ceramic and porcelain tiles
• Making circular penetrations for plumbing and electrical installations

Key specifications

• Cutting diameter: 115 mm
• Connection type: M14 threaded shank for angle grinders and rotary tools
• Suitable drilling method: dry drilling
• Cutting edge: diamond-segment rim for abrasive materials

How to use

Securely mount the M14-threaded core bit in the compatible angle grinder or rotary tool following the tool manufacturer’s instructions. Mark the center of the desired hole on the work surface and start drilling at low speed to establish a guide groove, then increase speed while maintaining steady pressure and preventing the tool from binding. Intermittently withdraw the bit to clear dust and allow cooling; since this bit is intended for dry use, avoid continuous heavy loading that can overheat the cutting segments. Maintain firm, controlled handling of the tool and follow safety guidelines including eye, ear, and respiratory protection.

Usage recommendations

Use appropriate protective equipment and a dust extraction system where possible. For prolonged life, avoid prolonged continuous cutting without pauses; allow short cooling intervals and clean accumulated dust from the work area and bit. Match rotational speed and feed pressure to the material hardness to optimize cutting performance and prevent premature wear.