CS Unitec 36" Threaded Core Barrel – 3-1/2" diameter

CS Unitec 36" Threaded Core Barrel – 3-1/2" diameter Product Guide

The CS Unitec 36" Threaded Core Barrel is designed for deep drilling in reinforced concrete and masonry using threaded diamond core bits. This product solves the challenge of drilling precise, deep holes in hard construction materials, allowing contractors and technicians to complete structural penetrations accurately and efficiently.

Core barrels like this one are commonly fitted onto electric, pneumatic, or hydraulic drill rigs to extend the core bit reach for deeper cuts. The threaded connection provides a secure and reliable method to connect multiple barrel sections or attach one to a core bit, ensuring stability during drilling. This facilitates effective removal of drilled concrete cores and maintains alignment and precision during the operation.

Where This Is Used

• Concrete structure and masonry core drilling requiring extended depth
• Commercial and industrial building construction and renovation projects
• Installation of plumbing, electrical conduit, or HVAC penetrations through walls and slabs

Key Details

Selection Notes

From a selection standpoint, confirm the core barrel diameter matches your drill rig and bit requirements. The 3-1/2" diameter size is common for medium-depth penetrations but may require multiple barrels threaded together for extended depths. Confirm the bit segment size is appropriate for the material hardness and drilling speed—this barrel accommodates bits with .187" segments for diameters under 7". Plan for mounting stability and verify ram or rig capacity to handle the extended barrel length. Also, consider water supply for slurry control during drilling to ease cleanup and maintain visibility.

Drill Setup Notes

Before drilling, inspect threading and clean barrel connections to ensure secure fit and avoid wobble or misalignment. Confirm the drill rig is compatible with multi-section threaded barrels and that the drill’s feed pressure and speed settings match the drilling conditions. Proper water application improves drilling performance and reduces bit wear. After use, clean slurry and concrete dust from the barrel and threads to maintain reliable connections for subsequent jobs.