polymak dos-donts
polymak dos-donts


  • Do always follow instructions for correct storage.

  • Do always visually inspect grinding wheels before mounting for possible damage during transport and eliminate damaged ones.

  • Do always use a safety guard, which should cover nearly one half of the grinding wheel.

  • Do always use non-reinforced cutting-off wheels on fixed stationary machines.

  • Do always switch off the power at the supply and/or unplug the machine before changing the wheel.

  • Do always use the tools supplied by the machine manufacturer to change the wheel.

  • Do always ensure that the spindle speed of the machine is no higher than the operating speed marked on the wheel.

  • Do always use the correct wheel mounting flanges for grinding wheels and check that they are undamaged, clean and free of burrs.

  • Do always use blotters between the mounting flanges and the wheel sides for soft mounting of flat cutting-off wheels.

  • Do always allow newly mounted wheels to run.


  • DON’T store wheels in a damp atmosphere or in extreme temperatures.

  • DON’T use non-reinforced cutting-off wheels on portable machines.

  • DON’T handle wheels roughly.

  • DON’T drop portable machines or lower to the floor by the cable or air hose. A wheel can be easily cracked by the weight of the machine if it is up.

  • DON’T mount a damaged wheel.

  • DON’T EVER exceed the maximum operating speed marked on the wheel.

  • DON’T force a wheel onto a machine spindle.

  • DON’T use mounting flanges which are incorrect, damaged, dirty or worn out.

  • DON’T tighten the mounting nut or locking flange excessively. This can distort the flanges.

  • DON’T use blotters for soft mounting of depressed-centre concave wheels.