Husqvarna Diamond Core Drill Bit 542788534 7/8 Inch B1420 Elite (24 Inch Tube 1-1/4-7 Thread Laser Welded Hard Reinforced Concrete Stone Wet)

Husqvarna 542788534 7/8 Inch x 24 Inch B1420 Elite-Drill Diamond Core Bit

The Husqvarna 542788534 is a 7/8-inch diameter wet diamond core drill bit engineered for continuous deep utility penetrations through hard cured concrete, heavy rebar-reinforced structures, and natural stone. Built as part of Husqvarna's Gold-level B1420 Elite-Drill series, this bit features an extended 24-inch core travel tube and rooftop-profile laser-welded segments with a 2/5-inch total segment height to accelerate bit tracking and eliminate core chatter. Fitted with a standard 1-1/4-inch - 7 threaded hub connection, it integrates directly with high-powered DM series core drill motors to deliver straight, rapid deep-hole coring without using barrel extension rods.

Best Used For:

• Small Utility & Anchor Hole Coring: Boring precise 7/8-inch diameter clearance holes through thick concrete footings and slabs for small conduit, wiring, and structural anchor bolts.
• Heavy Rebar & Hard Aggregate Penetration: Slicing cleanly through dense high-PSI concrete containing heavy steel rebar mesh, flint, chert, and granite aggregates without segment glazing.
• Deep Foundation Sampling & Drilling: Executing continuous 24-inch deep core extraction passes in structural concrete walls and natural stone masonry in a single setup.

Key Performance & Safety Features

• Gold-Level B1420 Matrix Formulation: Premium diamond bond matrix engineered specifically for extreme cutting speeds and wear life in hard reinforced concrete.
• Extended 24-Inch Core Travel Tube: Deep-reach barrel capacity allows full 2-foot drilling depth in one pass, eliminating vibration and downtime from extension rods.
• Rooftop Segment Geometry: Specialized segment profile reduces initial contact friction to deliver instant bit centering and smooth, chatter-free starts.
• High-Strength Laser-Welded Segments: Advanced laser welding bonds diamond matrix segments to the steel barrel for maximum operator safety under high drilling torque.
• 2/5-Inch Total Segment Height: Generous 2/5-inch segment height with a 3/10-inch active diamond depth layer ensures extended bit longevity.
• Standard 1-1/4"-7 Threaded Hub: Universal female thread connection fits directly onto professional core drill rig spindles including Husqvarna DM models.

What's Included

• (1) Husqvarna 542788534 7/8" x 24" B1420 Elite-Drill Diamond Core Bit

Technical Specifications

Pro-Tip: When wet coring small 7/8-inch diameter holes to a 24-inch depth, ensure steady water flow to continuously wash slurry out of the narrow annulus, preventing core binding and thermal stress on the barrel.