Type PU-83 Simple Pre-scraper with single polyurethane blade Position: Tangential for pulleys Ø 220-1000 mm For BW 400-2000, max speed 2.3 m/s, also reversible For easy to medium cleaning Typically a fi rst scraper for an end user Also used by many OEM as a standard scraper Easy to replace the scraper blade without tools The scraper must not be fitted to chevron belts or belts with mechanical joints For materials: Sand, Gravel, Stone, Saw dust, garbage, soil Type PU-89 Heavy Pre-scraper single strong and thick polyurethane blade Position: Tangential for big pulleys Ø 400-1000 mm For BW 650-1400, max speed 3 m/s, also reversible For heavy cleaning Easy to replace the scraper blade without tools The scraper must not be fitted to chevron belts or belts with mechanical joints For materials: Gravel, limestone, crushed stone, iron ore, cement Type PU-91 Pre-scraper with segment polyurethane blades Position: Tangential for pulleys Ø 200-630 mm For BW 400-2000, max speed 2.3 m/s, also reversible Medium to heavy cleaning Accurate cleaning due to flexible multi sectored blades Easy to service and maintain The scraper must not be fitted to chevron belts or belts with mechanical joints For materials: Sand, Gravel, crushed stone, wet and sticky material