A good scraper design is essential for an efficient solution to remove effectively carry back from the belt surface. Our primary scraper are developed in the harsh conditions of the large German surface mines. Based on a special Polyurethane mixture reduced wear and belt protection stood in the main focus of the development. The unique WitchHead suspension system offers to evade in case of a belt damage without harming the scraper or the belt conveyor. The contact pressure is given by the BeltWitch Hybrid AirSpring, a combination of the pneumatic scraper und ingenious backup system. The desired contact pressure is given for many months also without any air supply. A system which is nearly maintenance free.