Core Drill Bit Diam S3 112 mm / 450 mm length [1 1/4 inch] - Diam

Diam S3 core drill bit with a 112 mm cutting diameter and a 450 mm overall length, designed for core drilling in masonry and concrete. The bit has a 1 1/4" connection size for use with compatible rotary or diamond core drilling rigs. It is intended to produce accurate circular holes for plumbing, electrical and installation work where a clean, consistent bore is required.

Advantages

The tool provides a large 112 mm cutting diameter that enables efficient removal of material for service openings and through-holes. Its 450 mm length allows drilling through moderately thick walls and slabs while maintaining stability and control. The 1 1/4" connection ensures compatibility with a wide range of core drilling adaptors and rigs. The construction and cutting geometry are optimized for clean cores and reduced breakout on exit, improving the quality of holes in concrete and masonry.

Suitable for

• Drilling circular holes for plumbing installations
• Creating service penetrations for electrical conduits and cables
• Opening passages for HVAC and ventilation ducts
• On-site core sampling and small-scale concrete removal

Key specifications

• Cutting diameter: 112 mm
• Overall length: 450 mm
• Connection size: 1 1/4" (male thread)
• Material compatibility: concrete, masonry and similar mineral substrates
• Typical application: wet or dry core drilling with appropriate rig and coolant

How to use

Mount the core bit on a compatible drilling rig or adapter with a 1 1/4" connection and secure it according to the rig manufacturer’s instructions. Position the rig perpendicular to the surface and start drilling at low speed to establish a guide groove, then increase speed and apply steady, even pressure. For best results in concrete and masonry, use appropriate coolant or water feed if the rig supports wet drilling; for dry drilling follow tool and rig recommendations for dust extraction. Withdraw the bit occasionally to clear cuttings and prevent overheating. After reaching the required depth, retract the core bit slowly to remove the core and inspect the hole for breakouts or irregularities.

Usage recommendations

Use with a stable drilling rig and suitable mounting adaptors. For prolonged life and cleaner holes, prefer wet drilling with adequate water supply and a vacuum dust extraction system when dry cutting. Match drilling speed and feed pressure to substrate hardness and follow all safety guidelines, including eye, ear and respiratory protection.