Working Advice

  • The magnet retention force of the power tool essentially depends on the thickness of the workpiece. The greatest magnet retention force is achieved using soft steel with a thickness of at least 12 mm.

Note: When drilling into thinner steel, an additional steel plate (of at least 100 x 200 x 20 mm) must be placed under the workpiece. Ensure that the steel plate cannot fall off.

  • Secure the power tool with a safety strap when working overhead or on non-horizontal surfaces. In the event of a power failure or overload, the magnet retention force is not maintained. The power tool may fall over and cause accidents.
  • If the application tool jams, do not apply any more feed; instead, switch off the tool. Investigate the reason for the application tool jamming and eliminate the cause.
  • Always check all parts of the coolant supply system before beginning work. Never use damaged parts.
  • Keep the coolant away from tool parts and people in the working area.

The surface of the workpiece must be smooth and clean. Smooth out coarse irregularities, e.g. welding spatter, and remove loose rust, dirt and grease. The retention force of the magnet only applies for suitable surfaces.

  • Use a drill emulsion or cutting oil for cooling and lubrication in order to prevent the drill bit from overheating or jamming.
    The supplied coolant supply system must only be used when drilling with the annular cutter.
  • Workpieces should be centre-punched before being drilled.
  • Twist drill bit: For drilling diameters > 10 mm, pre-drill with a small drilling diameter. This allows you to reduce the contact pressure and puts less strain on the power tool.
  • When drilling, only use sharpened annular cutters (brand accessories) that are in perfect condition.
  • Switch off the magnets when you are not using the power tool (push the magnet on/off switch (1) downwards).

  • Align the power tool on the workpiece.
  • Switch the magnet on to fix the power tool to the workpiece (magnet on/off switch (1)).
  • Secure the power tool with the safety strap (28) when drilling into vertical or sloped surfaces, or working overhead.
  • Switch the power tool on (motor on/off switch (2)).
  • To drill, turn the crank handle (4) with uniform feed until the required drilling depth is reached.
  • Once the required drilling depth has been reached, retract the crank handle until the drive unit has returned to its initial position.
  • Switch off the power tool, loosen the safety strap if necessary and switch off the magnet.

  • Only use annular cutters that are free of defects; ensure that these are in perfect condition before each use. Do not use any annular cutters that are damaged.
  • Switch the power tool off immediately if the annular cutter gets stuck.
  • Protect the annular cutter. The tip of the annular cutter is hard yet fragile.

The following measures will help to slow down the wear and prevent breakage of annular cutters:

  • When drilling in steel, ensure that there is enough coolant available; use coolant for metal cutting.
  • Make sure that the workpiece is level and clean to guarantee the required magnet strength.
  • Before drilling, ensure that all parts are properly attached.
  • At the start and end of the drilling procedure, reduce the contact pressure by a third.
  • Remove large quantities of metal chips when drilling in materials such as cast iron, copper die casting, etc. with compressed air.