The duration depends on the conditions it is used under. For example, the grinders will be worn more the harder the material that needs to be removed. Furthermore, it also matters how close they put the grinders to the surface/road.
Our best approximation will be around 30-50 hours – but again it depends on the conditions.
As far as performance goes, for road markings with a thickness of 1 mm and a width of 20 cm, the Borum LineEraser can remove about 200 m an hour. The max. operation width is 25 cm.
Made of Tungsten Carbide, both versions provide optimum wear resistance. And the tilt-up cover makes it easy to maintain and change the eraser heads.