Drill bit STHOR 23423, length 900 mm, single piece

STHOR 23423 drill bit, length 900 mm, single piece is a long-reach SDS‑MAX core drill designed for percussion drilling in concrete, masonry and similar mineral construction materials. With a 38 mm cutting head and an SDS‑MAX shank, the tool provides extended working length to access deep holes, recessed fasteners and installation points in construction, renovation and installation tasks. It is supplied as a single piece and intended for use with compatible rotary hammers for medium to heavy duty drilling.

Advantages

The SDS‑MAX shank offers secure retention and quick tool changes in high‑impact rotary hammers. A 38 mm diameter cutting head balances hole size and drilling speed for anchor installation, pipe and conduit passages. Hardened cutting edges with a carbide tip increase wear resistance and extend service life under repetitive hammer drilling. The drill geometry is optimised to evacuate dust and debris efficiently during rotation and percussion action, supporting consistent drilling performance over long depths.

Suitable for

• Drilling through and blind holes in reinforced concrete and solid masonry
• Installing anchors, sleeves, pipes and electrical conduits
• Construction and renovation tasks requiring extended reach for deep or recessed holes
• Use with SDS‑MAX rotary hammers for medium to heavy duty applications

Key specifications

• Shank type: SDS‑MAX compatible shank for rotary hammer tools
• Overall working length: 900 mm (single piece)
• Cutting head diameter: 38 mm
• Intended materials: concrete, masonry and similar mineral construction materials
• Cutting tip: carbide tip with hardened cutting edges for percussion drilling
• Application: through and blind hole drilling for anchors, pipes and conduits

How to use

Insert the SDS‑MAX shank fully into the rotary hammer’s chuck until it locks according to the rotary hammer manufacturer’s instructions. Select hammer‑drilling mode and apply steady, even pressure while allowing the tool’s percussion action to perform cutting. Periodically withdraw the bit to clear dust and debris from the hole and to reduce heat buildup. Adjust feed pressure and drilling speed to the density of the material and avoid applying excessive force that could reduce bit life or damage the tool.

Usage recommendations

Use appropriate personal protective equipment including safety goggles, hearing protection and a dust mask or extraction. Verify position of embedded reinforcement before drilling and reduce feed pressure if the bit contacts rebar. For prolonged or deep drilling, retract more frequently to clear debris and cool the bit. Match the 38 mm diameter to anchor or sleeve specifications to ensure correct fit and secure installation.