CS Unitec 36" Threaded Core Barrel – 4" diameter Product Guide

The CS Unitec 36" Threaded Core Barrel with a 4" diameter is a diamond-segmented barrel designed for deep drilling applications in reinforced concrete and masonry. It addresses the challenge of extracting large, clean core samples from tough materials, enabling precise cutting and removal of concrete cylinders for testing or creating openings.

This type of threaded core barrel is commonly used with electric, pneumatic, or hydraulic drill rigs equipped to handle such accessories. The threaded connection allows secure attachment of the barrel to matching core bits and extensions, facilitating deep drilling without losing alignment or causing bit slippage. Rental users typically deploy this barrel when a standard core bit length is insufficient to reach the required depth or to replace worn barrels during extended drilling operations.

Where This Is Used

• Drilling deep core holes in structural concrete for material sampling or testing
• Masonry drilling applications requiring precise, cylindrical holes
• Construction or engineering projects needing openings for utilities, anchors, or probes

Key Details

Selection Notes

When selecting a threaded core barrel, the key factors are the required drilling depth, bore diameter, and compatibility with your drill rig and core bit. The 36" length suits projects needing extended reach beyond standard bit lengths without compromising stability. Confirm that the rig supports a 4" diameter core barrel and that the threading matches the included bits or extensions. For reinforced concrete and masonry, diamond-segmented barrels provide efficient cutting durability. Review job site conditions to determine if water or slurry management is needed, as this affects drilling fluid supply and cleanup planning.

Barrel Setup Notes

Threaded connection integrity is crucial; ensure all connections are clean and free of debris before assembly to prevent loosening or misalignment. Align the barrel and bit properly onto the drill to minimize vibration and wear. If drilling deep cores, consider the support and mounting arrangement of the drill rig to maintain stability. Check that the drill rig’s power and feed settings correspond to the barrel length and core diameter to avoid overheating or damaging the diamond segments. Post-use, clean concrete slurry and debris from the barrel and inspect threads for signs of wear or damage before the next job.