Core drill bit Diam S3 225/450 mm [1 1/4 in] – Diam

The Diam S3 core drill bit with a 225/450 mm cutting section and 1 1/4 inch connection is engineered for drilling large-diameter cores in concrete, masonry and similar materials. The extended cutting length provides deeper core extraction in a single pass, while the 1 1/4" threaded connection fits drilling rigs and adaptors that accept this standard mounting. The tool is suitable for use with wet drilling setups to control dust and cool the bit or with rotary drilling where applicable.

Advantages

The long 225/450 mm cutting section reduces the need for multiple passes and speeds up core removal when working on thick elements. A standard 1 1/4" connection ensures compatibility with a broad range of core drilling rigs and adaptors. The bit is intended for wet drilling to maintain cutting efficiency and prolong diamond segment life, and it also performs adequately in rotary drilling applications when recommended by the rig manufacturer.

Suitable for

• Drilling large-diameter cores in reinforced or plain concrete
• Creating openings in masonry and brickwork
• Wet core drilling to control dust and cool the bit
• Rotary drilling rigs that accept a 1 1/4" thread

Key specifications

• Cutting section length: 225/450 mm
• Connection size: 1 1/4 inch threaded mount
• Intended materials: concrete, masonry and similar mineral substrates
• Drilling modes: wet drilling recommended; suitable for compatible rotary rigs
• Application: large-diameter core extraction and deep core drilling

How to use

Mount the core drill bit on a compatible drilling rig or adaptor with a 1 1/4" thread. When drilling concrete or masonry, use a wet drilling setup where possible to supply continuous water flow to the cutting area; this cools the diamond segments and reduces dust. Start drilling at low speed to establish the pilot contact, then increase speed and apply steady, even feed pressure. Periodically retract the bit to remove debris and allow water to reach the cutting face. Follow the rig and bit manufacturer's recommendations for rotation speed and feed rate.

Usage recommendations

Use the Diam S3 core drill bit primarily with wet drilling to maximize segment life and cutting performance. Verify that the drilling rig accepts a 1 1/4" thread and that rotation speed and feed settings match the substrate hardness. For reinforced concrete, monitor cutting progress and clear debris frequently to avoid jamming or overheating.