Sierra de corona KWB 499483 8,3 cm para hormigón cerámica plástico

The KWB 499483 hole saw with an 8.3 cm diameter is a tungsten-carbide-grit cutting tool supplied complete with arbor and pilot drill. The tool features a precision tube coated with special tungsten carbide grit and high-temperature brazing to secure the cutting surface. It is intended for cutting openings in aerated concrete blocks, masonry, tiles, ceramics, natural stone, lightweight building materials, plasterboard and plastics for installation work such as switches, sockets and water pipe penetrations.

Advantages

The tungsten carbide grit coating and high-temperature brazed construction provide wear resistance and stable cutting performance. Supplied as a complete kit with arbor and pilot drill, the hole saw enables accurate centring and quicker setup. The precision tube ensures cleaner holes and consistent diameter, suitable for repeated installation tasks in mixed materials.

Suitable for

Key specifications

How to use

Attach the arbor and pilot drill to the hole saw and secure them in the drill chuck according to the drill manufacturer's instructions. Mark the centre of the hole on the workpiece, position the pilot drill, and start drilling at low speed to create an accurate centre. Increase speed as appropriate for the material while applying steady, even pressure. For hard materials such as ceramic or natural stone, use slower speeds and allow the tool to cool periodically. Withdraw the hole saw occasionally to remove debris and prevent clogging.

Recommendations

Use appropriate personal protective equipment (safety glasses, gloves, dust mask) and a drill with sufficient power and a suitable chuck. For best results in brittle or hard materials, use water cooling or pause frequently to avoid overheating. Ensure the pilot drill is intact and replace the arbor or pilot if worn to maintain accurate cutting.