... /113622 , and a good press arm, Φ250 two groups of cylinder pressure device, and one set of air control box. 6. Gloss ... with 113620 bearing and support, arm, spanner positive and negative pressure device two groups. 7. dryer section: two Φ 2500 × 2000 dryers ... , with internal and external machining, surface roughness ≤ 0.4, cylinder surface hardness HB ≥ 200, equipped with 3,113,156 bearing ...