CS Unitec 24" Threaded Core Barrel – 5" diameter Product Guide

The CS Unitec 24" Threaded Core Barrel is a diamond core drilling accessory designed for deep drilling in reinforced concrete, masonry, and other hard materials. It solves the challenge of accessing and removing core samples during heavy-duty drilling operations where precision and durability are required.

This type of threaded core barrel is commonly used with electric, pneumatic, or hydraulic drill rigs to perform extended-depth coring. Its threaded design allows for secure attachment to a compatible core bit and extension barrels, enabling operators to reach deeper sections without losing drill alignment or risking barrel separation. The barrel’s diamond segments provide effective cutting for tough materials while maintaining wear resistance during long drilling cycles.

Where This Is Used

• Deep core drilling in reinforced concrete structures
• Masonry drilling for construction and renovation projects
• Industrial facilities requiring precise core samples for inspection or testing

Key Details

Selection Notes

When selecting a core barrel of this type, consider the core diameter needed to obtain required sample sizes and ensure compatibility with your drill rig’s chuck and power system. The 5" diameter is a common size for moderate core sample requirements, balancing penetration rate and ease of handling. The 24" barrel length accommodates deeper drilling than short barrels but may require additional extensions for very deep cores. Verify that your drill rig supports threaded barrel attachments and confirm that the thread pitch matches the barrel to avoid mechanical failure during drilling. For jobs involving reinforced concrete, ensure the diamond segments are appropriate for cutting through steel constituents embedded within the concrete.

Drill Setup Notes

Proper setup includes securely threading the core barrel onto the compatible core bit and verifying tight connections before beginning drilling. Drill rigs should be stable and properly aligned to reduce wobble which affects barrel lifespan and drill accuracy. Consider the mounting or rig setup to maintain drill stability during extended runs. For water or slurry use, plan for adequate water supply to cool the barrel and flush debris from the hole, improving cutting efficiency and extending barrel life. After drilling, inspect threads for wear and clean off slurry and debris before storage to maintain consistent performance. Compatibility with the drill rig system, including power delivery and chuck size, is essential to avoid downtime and equipment damage.