Diamond core drill bit Diam S3 92 mm cutting diameter, 450 mm length, 1 1/4" connection

Diamond core drill bit Diam S3 with a 92 mm cutting diameter and 450 mm total length is designed for drilling precise circular openings in hard building materials. The bit features a 1 1/4" connection for attachment to compatible rotary and core drilling rigs. It is intended for wet drilling to maintain cutting performance and prolong segment life, offering consistent cutting speed and reliable centring in concrete, reinforced concrete, masonry and natural stone.

Advantages

The Diam S3 core bit combines durable diamond segments with a reinforced steel tube to deliver extended service life and stable drilling behaviour. Its 92 mm cutting diameter provides accurate hole sizing while the 450 mm length allows through-drilling and drilling with an integrated pilot bit or mandrel systems. The 1 1/4" connection ensures straightforward mounting on a wide range of hand-held and rig-mounted core drill systems. Water cooling capability reduces heat build-up and optimises cutting efficiency.

Suitable for

• Drilling holes in concrete for anchor installation and pipe passages
• Create openings in reinforced concrete and masonry for plumbing and electrical services
• Core sampling and diagnostics in structural inspection
• Drilling in natural stone for façade and finishing work

Key specifications

• Cutting diameter: 92 mm
• Total length: 450 mm
• Connection type: 1 1/4" thread
• Recommended cooling: water-cooled operation
• Suitable materials: concrete, reinforced concrete, masonry, natural stone

How to use

Secure the core drill bit to a compatible rotary or core drilling rig using the 1 1/4" connection according to the rig manufacturer's instructions. Position the drill at the marked location and begin drilling at low speed to establish the pilot contact, then increase speed and apply steady axial pressure without forcing the bit. Use a continuous supply of water to cool the diamond segments and flush out debris; stop periodically to check progress and remove accumulated slurry if necessary. After completing the hole, withdraw the bit while the drill is running at low speed to clear the core.

Usage recommendations

Use the core bit on drills rated for the required diameter and length, maintain water flow during operation, and avoid excessive lateral pressure. Replace worn or damaged segments and inspect the connection thread before mounting. For reinforced concrete, use progressive drilling with controlled feed to prevent overheating and premature wear.