image of 8 inch extension. This is a vertical, eye-level shot of a gray, cylindrical tool adapter or extension. It features a wider, smooth top section that tapers down to a narrower, equally smooth shaft, which ends with two parallel, rounded grooves at the bottom.
image of sds-max shank shape
image of 8 inch extension. This is a vertical, eye-level shot of a gray, cylindrical tool adapter or extension. It features a wider, smooth top section that tapers down to a narrower, equally smooth shaft, which ends with two parallel, rounded grooves at the bottom.
image of 18 inch extension. This is a vertical, eye-level shot of a slim, metallic gray tool adapter or extension. It features a wider, smooth cylindrical head at the top, transitioning into a long, narrower, smooth shaft that ends with two flattened sides at the very bottom.
image of sds-max shank shape
BOSCH

Bosch SDS Max Core Drill Bit Extension Drive Shank Mandrel Adapter Heavy Duty Concrete Masonry Brick Structural Foundation Hole Boring Tool Accessory

In stock
SKU: CAM008
$66.85 USD

Length (Inches)
Description

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Deepen Your Foundation Penetrations and Drive Maximum Kinetic Impact Through Extra Thick Concrete Structures Without Power Loss

Overcome standard depth limits and drive your commercial foundation boring operations ahead of schedule with the professional-grade Bosch SDS-Max Core Bit Extension. Purpose-built for industrial concrete demolition crews, commercial mechanical contractors, plumbing trench specialists, and structural HVAC installers, this heavy-duty drive accessory delivers uncompromised energy transmission through deep partition walls and massive structural footings. Standard core drill setups frequently fall short when attempting to bypass wide foundational headers, forcing field technicians to rely on secondary handheld tooling or inefficient structural configurations that drain machine power. This industrial extension adapter completely eliminates that roadblock by mechanically extending your operational path, letting your heaviest combination hammer drills drive large diameter core cutters cleanly through buried block formations and heavy concrete barriers.

Forged from premier, high-stress alloy steel, this commercial extension shaft integrates an advanced power-coupling core designed to carry percussive energy straight to the cutting margins. Traditional multi-piece extension extensions absorb immense shock, leading to excessive tool harmonic vibration, rapid bit overheating, and accelerated motor core fatigue. This streamlined all-in-one component maximizes torque translation by utilizing a tight, rigid fit that virtually eliminates rotational shaft deflection or dynamic twisting under high load limits. Optimized with a standard slotted quick-change SDS-Max shank interface that seats instantly into standard commercial hammer tools, this master extension tool allows your field crews to execute deep utility pathways, thick-wall plumbing sleeves, and commercial exhaust vents safely and with absolute structural straightness shift after shift.

Key Features

  • All-In-One Power Transmission: Direct-link layout passes kinetic energy straight to the cutting crown face, minimizing mechanical hammer loss.
  • Extended Deep-Wall Capability: Adds substantial tracking clearance to standard core setups to penetrate thick concrete footings and structural barriers.
  • High-Torque Shank Interface: Industrial SDS-Max slotted drive shank ensures absolute mechanical retention and zero slip inside heavy-duty combi-hammer chucks.
  • Reduced Harmonic Vibration: Balanced geometric core limits lateral shaft deflection, saving internal machine motors from intense jobsite wear.
  • Premium Structural Alloy Steel: Engineered from heat-hardened, high-stress tool steel built to withstand continuous percussive friction.
  • Commercial Alignment Stability: Extra rigid body configuration maintains a straight tracking path inside deep bores to stop binding or offset layout cuts.

What's Included

  • (1) Bosch SDS-Max Heavy-Duty Masonry Core Drill Bit Extension Adapter

Specifications

Specification Profile Details / Performance Value
Brand Name Bosch
Product Accessory Scope Rotary Hammer Core Bit Extensions
Shank Drive Style SDS-Max Slotted Universal Quick-Change Standard
Core Compatibility Rating Optimized for Heavy-Duty Carbide Masonry Core Bits
Maximum Rated Core Size Material Composition Heat-Treated Structural Forged Alloy Tool Steel
Mechanical Coupling Style Direct Core Transmitting Monoblock Core Shank
Recommended Tool Formats Heavy-Duty SDS-Max Combination Rotary Hammers
Operational Drill Mode Hammer and Rotation Combo Setting Only
Primary Material Target Reinforced Concrete aggregate, Brick Masonry, Structural Cinder Block, and Stone Foundation Walls
Product Performance Matrix Engineered for High Energy Transmission and Reduced Torque Deflection
Measurement System Fractional Imperial (SAE) Dimensions

Pro-Tip: When coupling an extended SDS-Max core assembly for deep structural boring, always insert your centering pilot bit to establish an initial tracking ring roughly 1/2-inch into the concrete before pushing deeper. Once the guide circle is cut, stop the machine tool and clear out any compacted stone grit or masonry chips from the core cup interior before attaching the extension, ensuring that kinetic percussive shocks map straight down the centerline without deflecting.