CS Unitec 36" Threaded Core Barrel – 1" diameter

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

The CS Unitec 36" Threaded Core Barrel with a 1" diameter is a specialized drilling accessory designed for deep core drilling applications in reinforced concrete and masonry materials. This threaded core barrel extends the reach of compatible core bits, enabling operators to drill deep holes beyond the length limit of a single bit. It addresses the problem of drilling deep, narrow-diameter cores where longer barrel lengths are necessary to achieve the required drilling depth.

This type of core barrel is commonly used with electric, pneumatic, or hydraulic drill rigs equipped with compatible 1" diameter threaded core bits. In rental and jobsite support scenarios, it serves as an extension piece that allows for more efficient deep drilling without changing the core bit or rig setup. Operators typically mount the threaded barrel between the drill rig and the core bit to adjust core drilling length for boreholes in structural concrete, masonry walls, and similar materials.

Where This Is Used

• Deep core drilling in reinforced concrete structures
• Extended reach drilling in masonry walls or foundations
• Concrete sampling and investigation for structural assessment or repairs

Key Details

Selection Notes

When selecting a threaded core barrel for deep drilling, confirm that the barrel length aligns with the required core cutting depth beyond the bit length. Ensure the core barrel threading matches the diameter and thread pitch of the core bit and drill rig spindle. A 1" diameter barrel is appropriate for small-diameter cores often needed in investigative or sampling work. From a practical perspective, verify that the drill rig can effectively support and stabilize the extended barrel length to maintain drilling accuracy and prevent bit wander. Consider whether the drilling environment requires pneumatic, hydraulic, or electric power to ensure compatibility with the chosen barrel and bits.

Drill Setup Notes

Proper assembly of the threaded core barrel is crucial to maintain drilling performance. Before starting, inspect the threaded connections on the barrel, core bit, and drill rig spindle for wear or damage. Securely tighten the barrel to the bit and the bit to the rig to avoid loosening under drilling load. Check that the combined length of barrel and bit fits within the working area and that the drill rig stand or mount provides sufficient support to reduce vibration. In applications that generate slurry or water, plan for water supply and slurry removal to maintain visibility and bit cooling. Regularly inspect the barrel and bit connection during use to ensure secure engagement, especially on longer drill extensions like this 36" barrel.