CS Unitec 48" Threaded Core Barrel – 1-1/4" diameter Product Guide

This product is a 48-inch long threaded core barrel with a 1-1/4" diameter designed for deep drilling applications. It solves the problem of efficiently creating precise, deep holes in reinforced concrete and masonry, where standard drill bits or shorter barrels cannot provide the necessary reach or durability.

Threaded core barrels like this one are commonly used in conjunction with electric, pneumatic, or hydraulic drill rigs. They screw onto compatible drill bits, extending the effective drilling length while maintaining bit stability and core extraction quality. In rental or project support roles, users select these barrels to match the required hole depth and diameter, ensuring compatibility with the drill rig's power source and the material being drilled. Threaded design allows secure attachment and interchangeability of bits and barrels based on job needs.

Where This Is Used

• Deep core drilling in reinforced concrete structures such as walls, floors, and bridge decks
• Masonry drilling projects requiring precision holes beyond typical bit lengths
• Preparation for installations needing accurate openings for anchors, pipes, or utilities

Key Details

Selection Notes

From a selection standpoint, choose this core barrel based on the required drilling depth and hole diameter. The 1-1/4" diameter is standard for smaller core holes but can be used in series for deeper penetration with appropriate bit matches. The user should verify that their drill rig supports the threaded connection size and that the barrel length complements the drilling depth without overextending the rig’s capacity or affecting stability. Consider the material type: reinforced concrete and masonry require diamond-segmented core bits attached to this barrel for effective cutting and durability. The user should plan for slurry and water management during drilling to maintain drilling efficiency and tool longevity.

Drill Setup Notes

Ensure that the drill rig's spindle threading matches the barrel's thread specification for secure attachment. A proper setup includes stable mounting of the rig to avoid barrel or bit wandering during operation, which can damage the barrel and reduce hole quality. For electric, hydraulic, or pneumatic rigs, confirm that power and torque parameters meet the drilling demands associated with extended barrel length and the stone or concrete hardness. Water or slurry feed systems should be arranged to control dust and cool the core bit. After use, clean the barrel and bit assembly to remove slurry and debris, ensuring threads remain free of build-up to maintain reliable future connections.