Dalilin karkacewa game da daidaituwa tsakanin cibiyar jigilar firstor da kuma cibiyar sadarwa ta jirgin sama kada ta wuce 3mm. Dalilin karkacewa na karkara na tsakiyar firam zuwa ƙasa bai wuce 0.3%.
Majalisar tsakiyar tsakiyar firam na belin mai isar da abubuwa masu zuwa:
(1) Dalilin karkacewa game da daidaiton tsakiyar firam na tsakiya akan jirgin saman Powerel a layi daya bai kamata wuce 0.1% na tsawon;
(2) babba, ƙananan, da tsayi karkacewa na seams na tsakiyar firam na bel mai isar da bel na bel na.
(3) Kuskuren tazara l na tsakiyar firam na belin mai isar kada ya wuce ± 1.5mm, kuma bambancin haɓakawa ya wuce 0.2% na tazara;
(4) Dalilin karkacewa game da daidaitaccen balaguron mai bffer ya hau layin cibiyar zuwa layin tsakiya na mai isar da bel din bel mai karaya kada ya wuce 3 mm.

Matsayin Roller na tashin hankali bayan an haɗa shi da belin isar da bel, bisa ga pelt na belin, kuma ya kamata a haɗa da tsarin brack, kuma gaba ɗaya ya cika waɗannan buƙatun:
(1) don na'urorin da ke tsaye ko na nau'in motsi, bugun zuciya mara nauyi kada ya zama ƙasa da 400mm, kuma bugun bugun jini na baya
Ya kamata ya kasance 1.5 ~ sau 5 na m loosening bugun jini (lokacin da tsawon da polyester core ko kuma a zabi wani dandalin brack, ya kamata a zaba matsakaicin bugun jini).
(2) Don Korkararrun Rarraba Titin Nawa na bel mai isarwar belin, bugun zuciya loosening kada ya zama ƙasa da 100 mm.
(3) Motar tsabtace kayan tsabtace na tsabtatawa ya kamata ya kasance cikin lamba tare da bel ɗin mai karɓar, kuma tsawon lambar kada ƙasa da 85% na fadin.
Bayan na Idler roller an gyara akan firam na bel din, ya kamata ya juya sassauya kuma za'a iya daidaita shi da washers. Axilind cylindricity na idler na Idler zuwa layin cibiyar ta bayan shigarwa: Lokacin da Idel Diameta D <800mm, girma daidai da haƙuri shine 0.60mm; Lokacin da d> 800mm, girman haƙuri shine 1.00m. Bayan an kafa Idler a kan firam, haƙuri girma haƙuri tsakaninta da layin sa na firam shine 0.2%. Jirgin saman kwance na tsakiya na Idnertry na idler ya mamaye layin tsakiyar tsarin, da kuma rashin haƙuri ga mai girma shine 6 mm.