his is a close-up, vertical shot of a robust, metallic gray core drill bit. It features a wide, ribbed cylindrical head with four prominent, bronze-colored cutting teeth visible at the very top, transitioning into a narrower, smooth shank at the bottom.
This image shows a robust, metallic gray core drill bit, designed for heavy-duty drilling. It features a wide, ribbed cylindrical head with aggressive cutting teeth at the top, tapering down to a narrower, smooth shank that extends downwards and slightly to the right.
his is a close-up, vertical shot of a robust, metallic gray core drill bit. It features a wide, ribbed cylindrical head with four prominent, bronze-colored cutting teeth visible at the very top, transitioning into a narrower, smooth shank at the bottom.
This image shows a robust, metallic gray core drill bit, designed for heavy-duty drilling. It features a wide, ribbed cylindrical head with aggressive cutting teeth at the top, tapering down to a narrower, smooth shank that extends downwards and slightly to the right.
This is an eye-level, full-shot of a heavy-duty, gray core drill bit, laid horizontally against a plain white background. The bit features a wide, ribbed cylindrical cutting head on the left with prominent teeth, transitioning to a narrower, smooth shaft on the right that ends in a flat, rectangular attachment point.
This is an eye-level, full-shot of a heavy-duty, gray core drill bit, laid horizontally against a plain white background. The bit features a wide, cylindrical cutting head on the left with prominent horizontal ribs and multiple teeth, transitioning to a narrower, smooth shaft on the right that ends in a flat, rectangular attachment point.
This is a vertical, close-up shot of a metallic gray core drill bit. It has a ribbed cylindrical head at the top with what appear to be cutting teeth, and a long, smooth cylindrical shaft extending downwards, ending in a fluted tip.
This image shows a robust, metallic gray core drill bit, designed for heavy-duty drilling. It features a wide, ribbed cylindrical head with aggressive cutting teeth at the top, tapering down to a narrower, smooth shank that extends downwards and slightly to the right.
This image shows a robust, metallic gray core drill bit, designed for heavy-duty drilling. It features a wide, ribbed cylindrical head with aggressive cutting teeth at the top, tapering down to a narrower, smooth shank that extends downwards and slightly to the right.
This is a horizontal shot of a large, dark gray core drill bit. The prominent feature is a wide, ribbed cylindrical drilling head on the left, with an extension of a narrower, smooth shank protruding horizontally to the right.
This is a vertical, close-up shot of a metallic gray core drill bit. It features a wide, ribbed cylindrical head at the top with a few bronze-colored cutting elements visible, transitioning into a long, smooth cylindrical shank at the bottom.
This is an eye-level shot of a long, metallic gray core drill bit, angled so its tip points towards the bottom right. It has a ribbed, cylindrical drilling head on the upper left, transitioning into a long, smooth shank.
This image shows a robust, metallic gray core drill bit, designed for heavy-duty drilling. It features a wide, ribbed cylindrical head with aggressive cutting teeth at the top, tapering down to a narrower, smooth shank that extends downwards and slightly to the right.
This image shows a robust, metallic gray core drill bit, designed for heavy-duty drilling. It features a wide, ribbed cylindrical head with aggressive cutting teeth at the top, tapering down to a narrower, smooth shank that extends downwards and slightly to the right.
This is a horizontal, eye-level shot of a large, metallic gray core drill bit. It features a wide, ribbed cylindrical drilling head on the left with visible cutting teeth, extending into a long, smooth cylindrical shank to the right, which has a flattened end for attachment.
This is a vertical, close-up shot of a metallic gray core drill bit. It features a wide, ribbed cylindrical head with several bronze-colored cutting teeth at the very top, transitioning into a narrower, smooth cylindrical shank extending downwards.
This is a horizontal, eye-level shot of a large, metallic gray core drill bit. It features a wide, ribbed cylindrical drilling head on the left with visible cutting teeth, extending into a long, smooth cylindrical shank to the right, which has a flattened end for attachment.
This is a vertical, close-up shot of a metallic gray core drill bit. It features a wide, ribbed cylindrical head with a smaller, pointed drill bit protruding from its center top, transitioning into a narrower, smooth cylindrical shank at the bottom.
This is a vertical, close-up shot of a metallic gray core drill bit. It features a wide, ribbed cylindrical head with several bronze-colored cutting teeth at the very top, transitioning into a long, smooth cylindrical shank that narrows slightly towards a fluted end at the bottom.
This is a vertical, close-up shot of a metallic gray core drill bit. It features a wide, ribbed cylindrical head with several bronze-colored cutting teeth at the very top, transitioning into a long, smooth cylindrical shank that narrows slightly towards a fluted end at the bottom.
BOSCH

Bosch SDS Max One Piece Concrete Core Drill Bit Heavy Duty Asymmetric Carbide Tooth Deep Masonry Hole Cutter Electrical Switch Box Boring Tool

In stock
SKU: HC8501
$109.00 USD

Size (Diameter x Length) Inches
Description

Bosch Promtional Logo Logout

Punch Flawless Deep Switch Box Recesses and Large Utility Conduit Cavities in Dense Masonry with One-Piece Carbide Core Bits

Drastically slash your electrical installation times and step up jobsite productivity with the industrial-grade Bosch SDS Max One-Piece Rotary Hammer Core Bit. Tailor-made for commercial electricians, HVAC technicians, mechanical pipefitters, and structural renovation contractors, this premium all-in-one coring assembly is engineered to eliminate multi-piece complications. Forcing modular core cups, extension rods, and separate pilot pins into high-psi aggregate substrates frequently invites thread binding, dangerous loose couplings, and catastrophic kinetic power drops. This rugged single-piece core bit bypasses those failure modes entirely, establishing an uninterrupted solid steel pipeline that captures 100% of your demolition hammer's percussion stroke and delivers it directly to the cutting face for maximum, non-stop penetration depths.

Featuring an advanced, mathematically engineered wave pattern profile, this core bit channels impact force with extreme efficiency, resulting in drilling speeds up to 40 percent faster than conventional standard core designs. The cutting crown is armed with premium, high-density asymmetric carbide teeth that are carefully proportioned to match the exact diameter of the bit—delivering a highly aggressive biting progression alongside incredibly smooth, quiet operational cycles. To ensure a perfectly straight entry, an integrated carbide-tipped centering bit maintains unwavering tracking, while an extra-long two-flute U-shaped shank actively scoopes away pulverized concrete grit, lime dust, and structural debris to guarantee clean breakthroughs. Terminating in a slotted SDS-Max drive connection that locks seamlessly into elite power tools, this essential core boring accessory delivers clean, pristine switch box rough-ins through unyielding concrete surfaces shift after shift.

Key Features

  • Optimized One-Piece Architecture: Integrated design guarantees the absolute maximum transfer of your machine's striking energy straight to the cutting crown.
  • High-Velocity Wave Profile: Advanced geometric exterior pattern transfers impact force smoothly to accelerate drilling speeds up to 40% over prior generation models.
  • Asymmetric Carbide Teeth: Placement and volume of teeth are customized per size diameter to produce a hyper-aggressive material breakdown and whisper-quiet operation.
  • Carbide-Tipped Centering Pilot: Built-in starter guide bit establishes precise initial layout placement and prevents walking or drifting on slick concrete skins.
  • Dual-Flute U-Shape Shank: Deeply sculpted debris channels facilitate ultra-rapid dust evacuation out of deep blind holes to optimize tool temperature thresholds.

What's Included

  • (1) Bosch SDS-max® One-Piece Rotary Hammer Core Bit with Integrated Pilot Tip

Specifications

Specification Profile Details / Performance Value
Brand Name Bosch
Product Line Identifier SDS-max® Thru-Hole Core Array
Tool Accessory Type One-Piece Rotary Hammer Core Bit
Primary Field Application Electrical Switch Box Installation, Deep Hole Cavity Boring, Pipe Conduit Penetration
Shank Type Profile SDS Max Slotted Universal Heavy-Duty Drive Standard
Target Work Materials Structural Concrete, Hard Aggregates, Brick Facings, Block, and Masonry Units
Cutting Tooth Geometry Asymmetric Diameter-Matched Pattern Layout
Core Tip Edge Composition Industrial-Grade High-Density Tungsten Carbide
Flute Engineering Geometry Long 2-Flute U-Shape High Capacity Dust Channels
Energy Transmission Efficiency Up to 40% Faster Penetration via Wave Pattern Technology
Operational Drill Mode Rotary Hammer Mode Only (Do not use on Hammer-Only setting)
Required Safety Gear Safety Glasses, Hearing Protectors, Thick Work Gloves, OSHA Silica Dust Respirators

Pro-Tip: Unlike conventional solid concrete drill bits, a large-diameter one-piece core bit must be operated under active "Rotary Hammering" mode so that the tooth geometry cuts while spinning. When boring deep pockets for switch boxes, start the hole strictly square to the wall surface until the center pilot and carbide teeth score an initial 1/4-inch deep channel. Once that guide trench is locked in, break out the center core material periodically with a cold chisel if you are cutting deep cavities; this keeps the wide core hollow completely clear and prevents the tool from bottoming out early inside structural walls.