CS Unitec 36" Threaded Core Barrel – 7" diameter

CS Unitec 36" Threaded Core Barrel – 7" diameter Product Guide

This 36-inch threaded core barrel with a 7-inch diameter is a specialty accessory designed for deep drilling operations in reinforced concrete and masonry structures. It is primarily used to extend drilling depth by connecting to compatible core bits and rigs, enabling precise, deep-hole creation for applications such as utility installation, structural testing, and anchoring.

Threaded core barrels attach to drill rigs—electric, pneumatic, or hydraulic—and allow operators to maintain effective drilling progress at depths beyond standard bit lengths. Their robust segment design and threaded connection ensure stability during deep drilling, helping manage slurry and debris removal from the hole. In rental service settings, they support various industrial and construction drilling requirements where extended reach and reliability are critical.

Where This Is Used

• Deep reinforcement-concrete core drilling for utilities and infrastructure projects
• Structural and geotechnical sampling requiring extended drill depth
• Masonry drilling for anchor installations and mechanical openings

Key Details

Selection Notes

From a selection standpoint, verifying the barrel length that meets your project’s required drilling depth is essential. The 7" diameter size must match the core bit and rig threading for secure attachment. Consider the segment size on the core bits (.250" segments for 7" and greater diameters) to ensure durability and cutting efficiency in tough reinforced concrete. Compatibility with the drill rig’s power source—electric, pneumatic, or hydraulic—should be confirmed to ensure proper torque and feed rates. Threaded barrels are often selected when project parameters specify holes that exceed the length of a standard core bit, enabling deeper, continuous drilling without frequent bit changes.

Drill Setup Notes

When setting up, confirm the threading on both the barrel and core bit to avoid cross-threading or improper fit. Ensure that the drill rig selected can handle the combined length and weight of the core barrel and bit under drilling conditions. Because deep drilling generates slurry, plan water supply and slurry management measures to maintain clear drilling conditions and minimize friction. For rigs powered pneumatically or hydraulically, verify hose routing and connections to maintain consistent power delivery without interruption or line damage. After drilling, clean slurry and debris from all threaded connections to preserve thread integrity and ease of future assembly.