Cause of Failure

To support you in the proper use of diamond tools we have put together a list with the most common failures and the causes for these failures.

The diamond blade does not cut properly

  • The bond of the diamond blade in use is too hard for the material to be cut.
  • The drive power is too low due to an incorrect rotation speed, a wrong operation voltage, a loose drive belt or an insufficient engine power. 
  • The diamond blade has blunted  because the cutting speed is too high.
  • The diamond blade has been used with too much or not enough pressure on the material to be cut.
  • The diamond blade has blunted due to an excessive use in hard materials.
  • With a few cuts in an abrasive material the diamond blade can be sharpened again.

Segments breaking off

  • The material to be cut is not properly fixed and moving during the cutting process.
  • Segments are torn off because the blade jammed or was twisted in the cutting process.
  • Diamond blades with a bond too hard for the material to be cut can cause excessive wear of the blade and the loss of segments.
  • Heavily worn or damaged flanges  can cause  a twisting of the blade and segments to be torn off.
  • Badly worn drive shafts or bearing shafts can lead to radial offset and segments to break off.
  • Local overheating because of insufficient cooling due to a defect cooling system or cutting to deep for the diameter of the blade in use. 
  • Impact stress on individual segments.

Overheated diamond blades

  • Insufficient cooling and/or recommended cooling breaks were not observed.
  • The bond of the blade in use is too hard for the material to be cut.
  • The diamond blade has been used with too much pressure on the material to be cut.

Excessive wear of the tool

  • The diamond blade in use is not suitable for very abrasive materials.
  • Insufficient cooling - check the cooling system.
  • Radial offset of the blade because of a badly worn drive shaft or a blade in use with a bond too hard for the material to be cut.
  • The drive power is too low due to an incorrect rotation speed, a wrong operation voltage, a loose drive belt or an insufficient engine power.
  • The feed speed is too high.
  • The diamond blade is not held erpendicular to the material because of a worn or damaged drive shaft or reception flange.
  • Lateral pressure on the diamond blade because the blade has been used for grinding.

Radial run-out

  • The bond of the diamond blade in use is too hard for the material to be cut.
  • Wearing of the drive shaft because the diamond blade is not properly fixed.
  • Uneven rotation of the drive shaft because of a worn out bearing.

Cracked segments

  • The bond of the diamond blade in use is too hard for the material to be cut.
  • The feed speed is too high.

Non-circular shaft hole

  • The flange is not properly fixed.
  • The diamond blade is not properly fixed on the drive shaft, the blade is moving and therefore causing further damage and war of the drive shaft.
  • The drive shaft is badly worn.

Contact

Dr. Heinemann
Diamond Tools & Parts GmbH

Sonnenhalde 18-20, 74677 Dörzbach

Telefon: +49 (0) 7937 802 900
Telefax: +49 (0) 7937 802 90 29
E-Mail: service(at)diatools.com