Drill Bit GRAPHITE SDS MAX 28 mm model 57H534

GRAPHITE SDS MAX 28 mm drill bit model 57H534 is a rotary/percussion drilling accessory designed for SDS MAX-compatible hammer drills and rotary hammers. With a 28 mm cutting diameter and a robust shank for SDS MAX chucks, this bit is intended for drilling larger-diameter holes in concrete, masonry and natural stone. The construction balances impact resistance and drilling efficiency for use in construction, renovation and installation tasks where reliable masonry drilling is required.

Advantages

The SDS MAX design ensures secure retention and efficient power transfer from hammer drill to cutting head, reducing chisel-out and wobble during heavy-duty work. A 28 mm diameter provides the capacity to create anchor, conduit and fastening holes without multiple passes. The tip and flute geometry are optimized for debris removal and stable drilling under impact loads, while the hardened shaft and carbide-tipped cutting edges improve wear resistance and lifetime when used in abrasive masonry materials.

Suitable for

• Drilling anchor holes in concrete and reinforced concrete
• Creating openings for electrical conduits and plumbing fixtures
• Installing mechanical fasteners and chemical anchors
• General masonry drilling in brick, block and natural stone

Key specifications

• Shank type: SDS MAX compatible
• Cutting diameter: 28 mm
• Intended materials: concrete, masonry, natural stone
• Drilling mode: rotary with percussion (hammer drilling)
• Typical use: professional and construction applications

How to use

Select an SDS MAX rotary hammer or demolition drill that accepts SDS MAX bits. Secure the bit into the chuck according to the tool manufacturer's instructions until it locks. Mark and, if necessary, center-punch the drilling location. Use the hammer drilling mode for concrete and masonry, applying steady axial pressure without forcing the bit; allow the tool's impact action to perform the cutting. Periodically withdraw the bit to clear dust and debris from the hole and to prevent overheating. For deeper holes, drill in stages and clear debris between passes.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, hearing protection and dust mask) and a dust extraction system where possible. Match drilling speed and impact energy to the material and tool specifications to extend bit life. For reinforced concrete, advance carefully when encountering rebar and switch to a dedicated rebar-cutting accessory if required.