Hammer drill bit SDS‑Max double spiral four‑cutter 16×540 mm — Hikoki

SDS‑Max hammer drill bit with double spiral flute and four‑cutter head, 16×540 mm — Hikoki is designed for drilling large-diameter holes in concrete, masonry and natural stone with SDS‑Max rotary hammers. The double spiral flute accelerates removal of dust and debris from the hole, reducing clogging and maintaining drilling speed. The four‑cutter tip geometry ensures stable centring and precise hole shape, suitable for anchor installation, rebar placement and through‑hole drilling in construction and civil works.

Advantages

The double spiral flute design improves chip evacuation and reduces heat build-up during extended drilling tasks. The four‑cutter head provides balanced cutting action that minimises wandering and ensures a round, accurate hole. Manufactured for SDS‑Max chucks, the bit offers secure fitment and reliable torque transfer. Its length and diameter are tailored for deep anchoring and through‑hole applications while maintaining workable control and drilling efficiency.

Suitable for

• Drilling anchor holes in concrete and reinforced concrete
• Creating through‑holes for pipes and conduit installations
• Rebar placement and positioning holes
• Heavy-duty masonry drilling on construction sites

Key specifications

• Shank type: SDS‑Max compatible
• Tip design: four‑cutter head for stable centring
• Flute: double spiral for efficient debris removal
• Diameter: 16 mm
• Total length: 540 mm
• Intended material: concrete, masonry, natural stone

How to use

Select an SDS‑Max rotary hammer with appropriate power and set it to rotary or rotary‑hammer mode according to the material and hole depth. Securely insert the SDS‑Max shank into the tool chuck until it locks. Mark the drilling position, apply steady axial pressure and start drilling at low speed to establish the hole. Increase speed and maintain firm, even pressure while allowing the double spiral flute to evacuate chips; periodically withdraw the bit slightly to clear accumulated debris when drilling deep holes. Use appropriate personal protective equipment including eye and hearing protection and dust control measures such as wet drilling or a dust extraction system when required.

Usage recommendations

For longest service life and consistent performance, use the bit with a rotary hammer that matches the recommended power range for 16 mm drilling in concrete, avoid excessive lateral force, and keep the bit clean of packed dust. Replace the bit when the cutting edges become visibly worn or drilling efficiency drops. For through‑holes and anchoring, verify hole depth and cleanliness before installing fasteners or sleeves.