... dryer section: two Φ 2500 × 2000 dryers, with internal and external machining, surface roughness ≤ 0.4, cylinder surface hardness HB ≥ 200, equipped ... 3,113,156 bearing, bearing pedestal, M12 × 170 big gears and a heavy scraper in the first cylinder, a scraper ... 13. Drive section: five turning points, completed with reducers, small gears, couplings, drive rails and bolts. The dryer is equipped with ...