Diamond Crown DISTAR RM-TX 1 1/4 inch 82mm x 450mm Dry Diamond Core Drill Bit

For professionals who demand speed and precision in dry core drilling, the Diamond Crown DISTAR RM-TX stands apart with its laser-welded diamond segments and optimized segment geometry. Unlike standard core bits that struggle with reinforced concrete or overheat quickly, this bit delivers fast, clean cuts without water cooling, making it ideal for on-site plumbing, electrical, and HVAC installations where water is impractical or prohibited.

Highlights

• 82 mm drilling diameter with 450 mm working length for deep core drilling in a single pass
• Laser-welded diamond segments (10 mm height, 7 segments) ensure high abrasive resistance and long life
• Dry drilling capability eliminates the need for water cooling, reducing setup time and mess
• 1 1/4" UNC connection thread fits most professional core drilling machines
• Optimized for concrete, reinforced concrete (medium), brick, masonry, and sand-lime brick
• Re-tippable design extends service life and reduces replacement costs

In daily use

The RM-TX series is engineered for hand-held or stand-mounted dry core drilling. Its high-grade steel barrel and laser-welded segments withstand the heat and abrasion of dry cutting, while the segment arrangement ensures efficient debris removal and stable drilling. Whether you're creating openings for pipes, conduits, or ventilation, this bit maintains cutting speed and accuracy even in demanding materials.

Full specifications

• Drilling method: Dry drilling
• Drill bit type: Diamond core drill bit
• Drilling diameter: 82 mm
• Working length: 450 mm
• Connection thread: 1 1/4" UNC
• Segment type: Diamond segments
• Segment height: 10 mm
• Number of segments: 7
• Recommended materials: Concrete, reinforced concrete (medium), brick, masonry, sand-lime brick
• Application: Professional core drilling for plumbing, electrical, HVAC installations
• Core barrel material: High-grade steel
• Segment bonding: Laser welded
• Cooling requirement: No water cooling required
• Machine compatibility: Core drilling machines with 1 1/4" UNC spindle
• Series: RM-TX
• Optimal use: Hand-held or stand-mounted dry core drilling
• Max drilling depth: 450 mm
• Abrasive resistance: High
• Cutting speed: Optimized for fast dry drilling
• Re-tippable: Yes

Final note

Built for tough jobs, the DISTAR RM-TX delivers reliable performance and longevity in dry drilling applications. Its re-tippable design and robust construction make it a cost-effective choice for contractors who demand consistent results.