Technical +44 (0) 114 221 2510 +44 (0) 114 221 2563 info@rotabroach.co.uk
Rotabroach UK have over 30 years experience manufacturing and supplying magnetic drills, magnetic drill cutters and rail drilling machines to over 35 countries worldwide. Rotabroach have a long established history of quality and reliability. The unique geometry of Rotabroach annular cutters ensures hole drilling efficiency, reliability, durability and above all, accuracy.

Rotabroach have enthusiastic and knowledgeable distributors who enable customers to receive quality products backed up by excellent service. Our rapid response and delivery of orders from an extensive stock has earned the reputation accorded to the Rotabroach brand.


Rotabroach – The original name for hole cutting systems.
A Division of A member of OSL Group of Companies

TOP 10 TIPS

For getting the best out of your Rotabroach cutters

Ensure that the work surface is perfectly flat and free from debris.
  • Reduced magnetic performance will result if the magnet is not in full area contact with the work piece, caused by damage to the magnet face, debris between the magnet and work surface, or uneven work surface.
  • Failure to achieve full area contact may result in machine instability, resulting in reduced cutter life, or premature cutter failure.
Ensure that the work material will provide an adequate magnetic bond.
  • Reduced magnetic performance will result on material less than 25mm thick.
  • Some protective coatings or paints will also impair magnet performance.
  • Magnetic properties of materials, and the methods by which the materials are produced, varies significantly, cast, forged, rolled etc.
  • Inadequate magnetic bonding may result in machine instability, resulting in reduced cutter life, premature cutter failure, or the machine separating from the work surface.
Only use ROTABROACH approved pilot pins.

  • The precision relationship between ROTABROACH cutter and pilot ensures accurate and consistent positioning over the required hole location.
  • Failure to maintain the correct relationship may result in positional errors, reduced cutter life, or premature cutter failure.
Only use an approved ROTABROACH cutting oil.
  • ROTABROACH cutting oil is formulated to reduce friction at the cutting edge, improve cutting debris evacuation.
  • Failure to use an approved, or, inadequate oil supply, may result in reduced cutter life or premature cutter failure.
Maintain a constant feed rate.
  • It is imperative to maintain constant feed rate to ensure consistent evacuation of cutting debris.
  • Failure to maintain constant feed pressure may result in debris entrapment between cutting teeth and work surface, or debris compacting in the cutter flutes, which may result in reduced cutter life or premature cutter failure.
Don’t apply excessive pressure and slow the motor down.
  • Only apply sufficient pressure to ensure optimum motor speed and free cutting of the work piece. Failure to maintain correct cutting speed may result in extended operating cycle time, reduced cutter life, or premature cutter failure.
Re-sharpen the cutter before wear becomes significant.
  • It is important to maintaining the correct geometric profile on the cutting edges to ensure efficient and consistent hole cutting performance. Failure to ensure the correct profile maintenance may result in extended operating cycle time, reduced cutter life, or premature cutter failure.
Use the smallest centre punch mark possible to indicate hole centres.
  • Centre punch marks should only be used to indicate required hole position, and should be as small as possible.
  • Excessive centre punch size, or positional errors may result in reduced cutter life or premature cutter failure.
Ensure slug ejection before attempting to cut additional holes.
  • When cutting sequential holes, it is imperative to ensure that slugs produced from previous holes are removed.
  • Failure to comply with any of the items listed above may prevent ejection and result in premature cutter failure.
Have the drilling machine serviced regularly by a ROTABROACH approved agent.
  • To maximise the benefits of the of the precision ROTABROACH cutter geometry, it is imperative that the drilling machine must be adjusted to eliminate any excessive, or uncoordinated lateral, or rotary movement.
  • Failure to adequately maintain the drilling machine may result in reduced cutter life or premature cutter failure.