DISTAR RS-TX Diamond Core Drill Bit 300 mm x 450 mm, 1 1/4 inch UNC, Dry Drilling

On a busy construction site, an HVAC crew needs to run a 300 mm duct through a reinforced concrete wall. With no water line available and a tight schedule, they rely on the DISTAR RS-TX diamond core drill bit. Its laser-welded segments and air-cooled design cut through rebar and aggregate quickly, producing clean, precise openings without the mess of slurry.

Key specifications

• Diameter: 300 mm
• Working length: 450 mm
• Connection thread: 1 1/4" UNC
• Drilling method: Dry drilling
• Segment height: 10 mm
• Segment type: Laser welded diamond segments
• Segment bonding: Medium-hard bond
• Core barrel material: High-grade steel
• Cooling method: Air cooling
• Max drilling depth: 450 mm
• Recommended materials: Reinforced concrete, concrete, brick, masonry, asphalt
• Machine compatibility: Core drilling machines (handheld or stand-mounted)
• Product class: Professional/Industrial

Why choose it

The RS-TX series is engineered for high performance and durability. Laser-welded segments with a medium-hard bond ensure efficient cutting and long life in reinforced concrete and other abrasive materials. The robust steel core barrel provides stability and precise hole geometry, while air cooling eliminates the need for water supply, making it ideal for indoor and sensitive environments.

Ideal use cases

• Creating large openings for pipes, ducts, and conduits in concrete walls and floors
• Drilling anchor holes for structural supports and heavy machinery
• HVAC installations requiring precise core drilling
• Plumbing and electrical installations in commercial and industrial buildings

Good to know

This bit is intended for professional use only. Always follow the core drilling machine manufacturer's safety instructions. For optimal performance and bit life, ensure the machine is set to the correct speed and feed rate for the material being drilled. The 1 1/4" UNC thread is a common standard for large-diameter core bits.