Safety instructions

Safety instructions

Safety instructions



Operator safety is the key factor when NORTON designs and manufactures diamond blades.

Therefore, all our dry or wet cutting diamond blades offer a high degree of safety during operation as long as they are used properly! To avoid any misuse and to guarantee the safest and most economical performance from your NORTON diamond blade, it is essential that the following recommendations are observed BEFORE start and DURING operation:







  • Check the blade is the correct size and type for your machine and application.
  • Diameters of both bore and machine shaft must be equal.
  • Check for damage, i.e. cracks in the gullets, out of round bore hole, missing or broken segments, lost of steel centre tension. If in doubt, do not use and report.
  • Check the health & safety information is clearly marked on the blade, i.e. diameter, bore size and maximum speed, which should never be exceeded (see Conformity).


  • Do isolate the machine from its power source before installing or removing the blade.
  • Check guards, flanges, drive pins for damage or wear. If necessary, replace the relevant parts before use.
  • Check the blade shaft for grooves or wear along with the blade shaft bearings for play. In doubt do not use and report.
  • Flanges, shaft and nut must be undamaged and clean (dirty threads will make impossible to determine how tight the nut is).
  • Flanges must have equal diameters.
  • Check the water feed pipes are clear to ensure full water flow to be blade.
  • Check that your machine still has the required health and safety information clearly marked on it, i.e. maximum speed, personal protection warnings.
  • Do check that the speed marked on the machine doesn’t exceed the maximum speed engraved on the blade (see Conformity).
  • Direction arrow on the diamond blade must correspond with direction of rotation of machine. Rotate the blade by hand prior to start, and check for obstruction on the guard or out of true rotation.
  • Do ensure the blade fits snugly on the arbor and tighten the collars securely.
  • Do ensure that all guards are in place before using the machine.


  • Never work without guard and safety goggles.
  • Do wear all appropriate safety apparel during cutting.
  • Never use dry, blades that are marked "Wet only". Do ensure appropriate water supply to both sides of the blade (this is essential to your safety and to your blade performance and life).
  • Never use diamond blades on bare metal of any kind (diamond blades will cut steel reinforcement only if it is imbedded in the concrete material).
  • Tighten material to be cut firmly.
  • Apply light pressure during cutting (with the appropriate blade specification, the weight of the machine is enough!). Cutting speed is reduced by applying too much pressure and during deep sawing. Don’t hesitate to make step cutting.
  • During dry cutting, occasionally lift diamond blade out of the cut for cooling. Overheating can cause glazing, burring, jamming and destruction of blade.
  • Ensure a straight cut. Don’t tilt the saw blade when operating. Tilting would cause side pressure on the blade and can result in serious damage.
  • If blade becomes glazed or its cutting ability decreases it can be re-sharpened by cutting in abrasive material i.e. sandstone, breeze block or asphalt (re-dressing).
  • Check your blade and machine at regular intervals, including locating nut, water feed (if used) and blade segment wear. If any unusual noise develops, isolate the machine; if in doubt, do not use and report it.
  • Always remove the blade from the machine after use or in transit to avoid damage. Inspect blade prior to remounting for defects.