CS Unitec 12" Threaded Core Barrel – 2-1/2" diameter Product Guide

The CS Unitec 12" Threaded Core Barrel with a 2-1/2" diameter is a specialized drilling accessory designed for use with compatible core drills to perform deep drilling operations in reinforced concrete and masonry. Its threaded connection allows secure attachment to core drill rigs, enabling the removal of cylindrical concrete or masonry cores from structures where openings or analysis are required.

This type of core barrel is commonly used in construction, renovation, and industrial maintenance where precise, deep holes are needed for installing utilities, anchors, or passageways for mechanical and electrical systems. In rental and project support settings, the barrel is often selected to match drill rigs with threaded spindle connections and aligned with the size and depth requirements of the task. It is suited to electric, pneumatic, and hydraulic core drills, making it flexible across multiple jobsite power sources.

Where This Is Used

• Deep drilling through reinforced concrete walls, floors, and slabs
• Creating openings for plumbing, electrical conduits, or HVAC installations
• Core sampling for structural analysis and material testing

Key Details

Selection Notes

When selecting a threaded core barrel, the core diameter must match the drilling requirements and bit size of the job. The 2-1/2" diameter is suitable for mid-range core sizes, commonly used for moderate penetration holes in reinforced concrete. Confirm that the drill rig supports the threaded barrel and that the thread size matches to ensure safe and secure mounting. Consider the barrel length needed to reach the required drilling depth; this 12" barrel length aids in deeper drilling when paired with appropriately sized bits. The core barrel segment height affects cutting efficiency; typical segments around .187" or .250" thickness are for durability in reinforced material.

Threaded Core Barrel Setup Notes

Verify clean and undamaged threads on both the barrel and drill rig spindle before assembly to prevent loosening or binding during operation. Threaded barrels are available in lengths from 12" to 48", so select a barrel length that aligns with the target drilling depth without excessive overhang for better control and reduced bit wobble. When used with hydraulic or pneumatic drills, maintain proper fluid or air line routing to avoid pressure losses, hose kinks, or obstructions. After drilling, clean the core barrel thoroughly to remove slurry and debris, which can interfere with threading or future use. Inspect the diamond segments regularly for wear indications to maintain effective cutting performance.