Hammer drill bit Bosch Expert SDS Clean max-8X, 20 mm diameter, 400 mm length

The Bosch Expert SDS Clean max-8X hammer drill bit, 20 mm diameter and 400 mm length, is designed for deep drilling in masonry and concrete with SDS-compatible rotary hammer drills. Its 20 mm cutting diameter and extended 400 mm length enable precise, deep holes for anchor fixing, through-conduit installation or other structural drilling tasks. The SDS shank provides secure seating in the drill chuck and efficient transfer of impact energy for consistent drilling performance in demanding materials.

Advantages

The drill bit combines a robust carbide tip optimized for masonry with a flute geometry that removes dust and debris effectively during drilling, reducing clogging and improving feed. The SDS shank design ensures stable connection and quick bit changes. Its extended length allows access to deeper drilling points without extensions, while the 20 mm diameter delivers a balance of hole size for standard anchors and fixings.

Suitable for

• Drilling deep holes in concrete and solid masonry
• Installing anchors and heavy-duty fixings
• Through-hole drilling for pipes and conduits
• Professional construction and renovation work
• DIY projects requiring precise, extended-depth holes

Key specifications

• Shank type: SDS compatible
• Cutting diameter: 20 mm
• Overall length: 400 mm
• Material tip: carbide-tipped for masonry
• Flute design: optimized for dust removal
• Suitable tool type: rotary hammer / SDS hammer drill

How to use

Select an SDS-compatible rotary hammer and insert the bit into the chuck until it locks. Set the tool to hammer drilling mode and align the bit with the marked drilling point. Apply steady forward pressure without forcing the drill; let the tool’s impact action drive the bit into the material. Periodically withdraw the bit to clear dust from the hole and to avoid overheating. For deep holes, drill in stages if required by the site conditions and maintain a straight drilling angle for accurate hole alignment.

Recommendations

Use appropriate personal protective equipment including safety glasses, hearing protection and dust mask. For reinforced concrete, check for rebar before drilling and reduce pressure if contact occurs. Match the drill speed and impact settings to the base material and consider wet drilling or external dust extraction if high dust levels are expected.