The Simpson SDS-Max Core Bit with Centering Bit 3-1/2 in x 22 in is a professional-grade carbon steel core bit engineered to cut precise cylindrical holes through concrete and stone with accuracy and control. Designed for use with SDS-Max rotary hammers in combination hammer/drill mode, this one-piece unit integrates a centering bit directly into the assembly, giving contractors and tradespeople a reliable, guided solution for demanding masonry and concrete coring work.

Key Features

• Integrated centering bit - guides the core bit from the first contact with the surface, helping ensure accurate, on-target holes and reducing the risk of wandering in hard materials like concrete and stone.
• SDS-Max shank style - provides a secure, tool-free connection to SDS-Max rotary hammers, enabling efficient power transfer and confident control during heavy-duty coring operations.
• Carbon steel construction - delivers the durability needed to withstand the demands of repetitive cutting through stone and concrete in professional applications.
• Combination hammer/drill mode compatibility - allows the bit to perform in the rotary hammer setting best suited for masonry coring, giving users versatile, application-specific performance.
• 22 in. overall length - provides the reach needed for deeper installations and overhead or awkward-angle drilling tasks common in structural and masonry work.

Why This Product

• Accuracy built into the design - the included centering bit takes the guesswork out of starting a hole, making it easier to achieve precise, clean-edged cylindrical cuts in concrete and stone without drift or misalignment.
• Purpose-built for professional rotary hammer use - the SDS-Max shank is the standard connection for high-torque rotary hammers used in heavy masonry and concrete coring, so this bit slots directly into professional-grade tool setups without adapters.
• A trusted name in structural fastening and drilling - Simpson is a well-established brand in construction hardware, and this core bit is manufactured to the same exacting standards as their carbide-tipped drill bit line, reflecting consistent quality across their product range.
• One cohesive unit for coring tasks - with the centering bit and core bit combined in a single assembly, there are fewer components to manage on the job site, streamlining setup and keeping the workflow efficient.

Specifications

• Model Number: CBMX35022
• Description: SDS-max 3 1/2" x 22" core bit
• Diameter: 3.5 in.
• Drilling Depth: 6 3/4"
• Length: 22 in.
• Material: Carbon Steel
• Shank Style: SDS-MAX
• Country of Origin: Germany

Approved Applications

• Cutting cylindrical holes in concrete
• Cutting cylindrical holes in stone
• Use with combination hammer/drill mode rotary hammers
• Pairing with diamond core drills for masonry and concrete coring

Frequently Asked Questions

What shank type does the CBMX35022 use?

This core bit features an SDS-MAX shank style, which is designed for use with SDS-Max rotary hammers and provides secure, tool-free bit changes along with efficient power transfer during drilling.

What is the drilling depth and diameter of this core bit?

The CBMX35022 has a diameter of 3.5 inches and a drilling depth of 6 3/4 inches, with an overall length of 22 inches.

What materials can this core bit cut through?

This core bit is effective when cutting cylinders out of stone or concrete, making it suitable for demanding masonry and concrete coring applications.

What is the purpose of the centering bit included with this core bit?

The centering bit facilitates accurate drilling by guiding the core bit during operation. It allows for easy-to-use drilling in combination hammer/drill mode, helping ensure precise, on-target holes in hard materials.