CS Unitec 48" Threaded Core Barrel – 7" diameter Product Guide

This product is a threaded diamond core barrel designed for use with core drilling equipment to extend drilling depth in reinforced concrete and masonry. It solves the problem of drilling deep, precise cores by connecting securely to compatible drill rigs and bits, enabling longer reach and efficient removal of core samples.

Threaded core barrels like this one are commonly used in the field when projects require drilling deeper than the length of a single core bit. They are typically connected in series with core bits and additional barrels to achieve the required total drilling depth. From a rental and customer-support perspective, selecting the correct barrel length and diameter, and ensuring compatibility with the drill rig and core bits, is key to job success. Proper inspection and maintenance of the threaded connections prevent downtime during operation.

Where This Is Used

• Deep drilling in reinforced concrete structures, such as bridge piers, foundations, and walls
• Masonry drilling for infrastructure repair or installation of anchors and bolts
• Construction and industrial projects requiring precise core extraction for testing or utilities

Key Details

Selection Notes

When selecting a core barrel extension, ensure the diameter matches the core bit and drill rig system in use; in this case, 7" diameter. The segment height on threaded bits for this size is .250", which provides appropriate cutting and removal capability for reinforced concrete or masonry. The barrel length of 48" is suitable for deep drilling, but plan ahead for total required depth and count how many barrels or bits will be needed. Confirm the threading style aligns with your drill rig and core bit components to avoid connection issues on site. Inspect threads for wear or damage before use to maintain a secure and safe mechanical connection during drilling.

Drill Setup Notes

Proper setup requires securely threading the core barrel onto the core bit and drill rig spindle, ensuring all connections are tight and free from debris. Use piloting or guide bits as needed to maintain drilling accuracy. During drilling, monitor the barrel for signs of excessive wear or loosening. Consider water or slurry supply management to cool the bit and flush debris; this improves drilling efficiency and prolongs equipment life. After use, clean all threads and components to prevent buildup of concrete slurry or dust that could impair future connections.