CS Unitec 36" Threaded Core Barrel – 1-1/4" diameter

CS Unitec 36" Threaded Core Barrel – 1-1/4" diameter Product Guide

The CS Unitec 36" Threaded Core Barrel with a 1-1/4" diameter is a specialized diamond core barrel designed primarily for deep drilling applications in reinforced concrete and masonry. It addresses the need for precise, durable core drilling solutions where extended barrel length is required to reach deep into substrates while maintaining bit stability and segment performance.

This type of core barrel is commonly used in the field with electric, pneumatic, or hydraulic drill rigs. The threaded design allows secure attachment to compatible core bits and drilling assemblies, facilitating efficient removal of core samples for inspection, quality control, or installation of embedded items. Contractors and rental users benefit from the compatibility with various power sources, making it adaptable to different onsite drill rigs and project conditions.

Where This Is Used

• Deep core drilling in reinforced concrete structures such as bridges, high-rise foundations, and industrial floors
• Concrete and masonry projects requiring extended barrel lengths beyond standard sizes
• Applications where precise core diameter and straight drilling is critical for testing or installations

Key Details

Selection Notes

When selecting a core barrel for deep drilling tasks, confirm that the barrel length meets or exceeds the required drilling depth without compromising bit stability. The 1-1/4" diameter suits jobs needing smaller, precise cores. Verify that the drilling rig supports threaded barrel attachments of this size and that the power source aligns with the rig type, whether electric, pneumatic, or hydraulic. Thread compatibility must be checked to ensure a secure fit with available core bits. In rental situations, matching the barrel with the rig's spindle thread type avoids setup delays.

Drill Setup Notes

Proper assembly includes cleaning and inspecting threaded connections before attaching barrel and bit to prevent loosening during operation. Prepare for water or slurry management as diamond core drilling produces slurry that needs containment and removal, especially in deep drilling scenarios. Assess access and clearance space to handle the full 36" barrel length, considering rig mount and operator positions. Regularly inspect segment wear on the core bit rather than on the barrel to determine drilling progress and maintenance needs. After use, remove slurry and check connections prior to storage or next use.