Drill bit RAWLPLUG SDS MAX 28 mm RT-MAXT-28/690

RAWLPLUG SDS MAX 28 mm RT-MAXT-28/690 is a drill bit designed for use with rotary hammer drills that accept an SDS MAX shank. It is intended for drilling 28 mm diameter holes in concrete, reinforced concrete and masonry. The bit combines an SDS MAX connection for secure, play-free mounting with a carbide tip and flute geometry optimized for fast dust removal, making it suitable for construction and installation tasks that require large-diameter holes.

Advantages

The SDS MAX design ensures a positive locking interface with compatible rotary hammers, reducing slippage and improving energy transfer. A carbide cutting tip provides wear resistance and maintains drilling precision in abrasive materials. Flute geometry is engineered to evacuate debris efficiently, which helps maintain drilling speed and prolong tool life. The 28 mm diameter allows installation of larger anchors and conduits without multiple reaming passes.

Suitable for

• Drilling 28 mm holes in concrete and masonry
• Installation of heavy-duty anchors and chemical anchors
• Routing utilities such as conduits and pipes through walls and floors
• Preparatory work for mechanical fixings and structural anchors

Key specifications

• Shank type: SDS MAX compatible
• Drill diameter: 28 mm
• Intended materials: concrete, reinforced concrete, masonry
• Tip material: carbide cutting tip
• Flute design: optimized for dust extraction and chip removal

How to use

Fit the drill bit into the rotary hammer until it locks into the SDS MAX chuck. Select the hammer drilling mode on the tool and position the bit perpendicular to the work surface. Start drilling at low speed to establish a pilot point, then apply steady pressure and operate at the manufacturer's recommended hammering speed. Withdraw the bit periodically to remove accumulated dust and prevent clogging; for deep holes use a vacuum or compressed-air extraction to improve debris removal. Inspect the carbide tip for wear and replace the bit if cutting performance deteriorates.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, ear protection and dust mask when drilling. For reinforced concrete, use controlled pressure and frequent withdrawal to avoid overloading the bit. Match the drill bit length and hole depth to the anchor or conduit specifications, and follow anchor manufacturer instructions for hole cleaning before fixing.