Drill Bit SDS‑Max Makita 30×400×540 mm 6‑flute (B-05480)

Makita SDS‑Max drill bit 30×400×540 mm with a six‑flute design is intended for drilling deep holes in concrete, reinforced concrete and masonry with SDS‑Max rotary hammers. The bit provides a 30 mm diameter working profile, a 400 mm effective drilling length and a 540 mm overall length, enabling through‑holes and deep anchoring without frequent bit changes. The six‑flute geometry is engineered to remove debris efficiently and maintain cutting stability when penetrating dense materials. This drill bit is compatible with SDS‑Max chucks and is intended for professional construction and renovation applications that require reliable deep drilling performance.

Advantages

The six‑flute configuration improves dust and debris clearance compared with two‑ or three‑flute bits, reducing clogging and heat build‑up during prolonged use. A 400 mm working length allows drilling of deep anchoring points and through‑holes in thick walls or slabs while the 540 mm total length provides extra reach for overhead or recessed work. Compatibility with SDS‑Max rotary hammers ensures secure retention and efficient energy transfer for percussive drilling in concrete and reinforced structures. The bit's rigid geometry supports accurate hole sizing and reduces wandering when starting holes.

Suitable for

• Drilling deep anchoring holes in concrete and reinforced concrete
• Creating through‑holes in masonry and blockwork
• Renovation and structural work requiring long‑reach drilling
• Professional construction sites using SDS‑Max rotary hammers

Key specifications

• Diameter: 30 mm
• Working length: 400 mm
• Total length: 540 mm
• Flute design: six flutes for improved debris removal
• Intended material: concrete, reinforced concrete, masonry
• Shank type: SDS‑Max compatible

How to use

Select a rotary hammer with an SDS‑Max chuck and verify the tool rests and power are appropriate for a 30 mm masonry bit. Securely insert the shank into the SDS‑Max chuck until it locks. Mark the drilling point and start drilling at low speed to establish the pilot seat, then apply steady pressure with percussive action; allow the tool and bit to do the work rather than forcing the bit. Periodically withdraw the bit to clear accumulated dust and prevent overheating, especially during long deep holes. Use appropriate cutting lubricant or dust extraction attachments where applicable and always follow the rotary hammer manufacturer's operating instructions.

Usage recommendations

Use appropriate personal protective equipment — eye protection, hearing protection and dust mask — and consider a dust extraction system for indoor work. For reinforced concrete, drill with controlled pressure and withdraw frequently to remove steel filings and concrete dust; replace the bit if excessive wear reduces drilling performance or hole accuracy.