Drill bit RAWLPLUG SDS‑MAX 28 mm, model RT‑MAXT‑28/340

RAWLPLUG SDS‑MAX 28 mm drill bit, model RT‑MAXT‑28/340, is a purpose-built masonry drill designed for use with SDS‑MAX rotary hammers. With a 28 mm cutting diameter and a robust shank geometry, this drill bit enables effective hammer drilling in concrete, reinforced concrete, natural stone and other masonry materials. The tool is intended for professionals who require consistent hole quality and reliable engagement with SDS‑MAX chucks during heavy-duty drilling tasks.

Advantages

The SDS‑MAX shank ensures secure, play‑free engagement with compatible rotary hammers, improving impact transfer and drilling efficiency. The 28 mm diameter provides a balance between bore size and structural integrity for anchoring and through‑hole applications. The drill's tip and flute design promote chip evacuation and reduce jamming during deep or repetitive drilling, while the construction and material selection are chosen to withstand the stresses of percussion drilling in hard substrates.

Suitable for

• Drilling 28 mm diameter holes in concrete and reinforced concrete
• Creating anchor and through holes for fixings and fasteners
• Drilling in natural stone and dense masonry
• Use with SDS‑MAX rotary hammers on construction sites and renovation projects

Key specifications

• Cutting diameter: 28 mm
• Shaft type: SDS‑MAX shank compatible with SDS‑MAX chucks
• Usable length: 340 mm (overall usable length for drilling operations)
• Material suitability: concrete, reinforced concrete, stone, masonry

How to use

Install the drill bit into an SDS‑MAX compatible rotary hammer by inserting the shank until it locks into the chuck according to the tool manufacturer's procedure. Use the rotary hammer in hammer drilling mode, applying steady axial pressure and allowing the tool's impact action to advance the hole. Withdraw the bit periodically when drilling deep holes to clear dust and chips, and check the hole diameter and verticality as required by the application. Secure appropriate personal protective equipment such as eye protection, hearing protection and gloves before operation.

Usage recommendations

For optimal performance, match drill speed and impact settings to the substrate hardness and use progressive pressure rather than excessive force. When drilling reinforced concrete, advance slowly on encountering reinforcement and consider using a dedicated rebar‑cutting accessory if needed. Store the drill bit dry and inspect the cutting tip before use; replace the bit when wear or damage compromises drilling quality.