CS Unitec 36" Threaded Core Barrel – 5" diameter Product Guide

The CS Unitec 36" Threaded Core Barrel is a diamond core drilling accessory designed for deep drilling applications, particularly in reinforced concrete and masonry. It solves the problem of extracting precise, clean cores during drilling projects where deep, continuous drilling is necessary without frequent bit changes.

This type of core barrel is commonly used with electric, pneumatic, or hydraulic drill rigs to extend the reach when drilling deep holes. Its threaded connection allows secure attachment to compatible core bits and rigs, enabling efficient drilling in demanding construction, demolition, and utility installation environments. Rental users typically employ these barrels when project requirements call for drilling beyond standard bit depths while maintaining bit stability and clean core extraction.

Where This Is Used

• Deep drilling through reinforced concrete for structural sampling or penetrations
• Masonry drilling for utility, plumbing, and mechanical installations
• Applications requiring extension of core bit length for depths up to 36 inches or more

Key Details

Selection Notes

From a selection standpoint, the main focus is matching the barrel diameter and thread type to the existing core bit and drill rig being used. The 5" diameter barrel fits within common core bit ranges, making it suitable for medium-sized core drilling projects. Consider the drilling depth required, as this 36" barrel is intended for relatively deep cores; multiple barrels may be linked if allowed by the rig's capacity and thread design. Confirmation of bit segment length is useful to ensure cutting efficiency on reinforced concrete or masonry at the planned drilling depth. Users should verify that the rig provides adequate power and speed compatible with the core barrel diameter and project material.

Drill Setup Notes

Proper attachment of the core barrel to the drill rig and core bit is critical. Check threads for damage or wear before use to prevent loosening during drilling. Drilling through reinforced concrete or masonry generates slurry and dust, so plan the setup to manage water feed and slurry removal to maintain cutting efficiency and visibility. For hydraulic or pneumatic rigs, verify the power unit and hose or air-line setups for matching pressure and flow to the barrel diameter and bit size. After each use, clean the barrel of concrete slurry and debris to avoid buildup, maintaining tool longevity and performance. Inspect connections and cutting segments regularly to ensure stability and effective drilling on subsequent jobs.