Gaadhida silsiladdu waa agabka gudbinta agabka wax soo saarka warshadaha, inkasta oo ay aad u badan tahay, laakiin waxa ay door muhiim ah ka ciyaartaa hawlgalka caadiga ah ee nidaamka wax soo saarka oo dhan.Wax-soo-saarka dhabta ah, cillad-qaadista silsiladda ayaa inta badan lagu muujiyaa inay tahay mid fashilantay, sil-silad-gudbiyeedkana waa qaybta ugu muhiimsan ee ka mid ah qalabka wax-soo-qaadista, wuxuuna ka kooban yahay 3 qaybood: isku xirka silsiladda, saxanka silsiladda iyo giraanta silsiladda.Sidaa darteed, faa'iidooyinka iyo khasaarooyinka qayb kasta oo ka mid ah silsiladda gudbinta silsiladaha waxay door muhiim ah ka ciyaaraan hawlgalka caadiga ah ee gaadiidka.Iyada oo taas la eegayo, warqaddani waxay inta badan diiradda saaraysaa falanqaynta sababaha keenaya fashilinta silsiladaha, si loo yareeyo heerka guul-darreysiga silsiladaha, loo yareeyo kharashka dayactirka gaadiidka loona hagaajiyo waxtarka wax-soo-saarka.

1. Noocyada fashilka

Noocyada fashilka ee silsiladda qaada silsiladaha waxay leeyihiin astaamaha soo socda: dhaawaca silsiladda silsiladda, silsiladda gudbinta ee mashiinka saxanka silsiladda oo ka baxay, silsiladda gudbinta ee sprocket-ka korontadu, isku xirka silsiladda jebinta, dhaawaca silsiladda.

2. Sababta falanqaynta

Inta badan burburka saxanka silsiladda waa dabar xad dhaaf ah iyo qalloocinta qaloocsanaanta, mararka qaarkood dhacdo dildilaac ah.Sababaha ugu waaweyn waa:
① Saxanka hoose ee booska mashiinka saxanka silsiladda ayaa si siman loo dhigay ama ka badan yahay xagasha foorarsiga ee loo baahan yahay naqshadeynta;
② Isku xirka saxanka hoose ee jeexjeexa mashiinka silsiladda silsiladda ma fiicna, ama qayb ahaan wuu qallafsan yahay;
③ Burooyinka waaweyn ee alaabta la soo qaado waa la tuujiyaa ama la cidhiidhiyaa marka ay shaqaynayaan, si silsiladda qaadadu ay si degdeg ah u saamayso walaaca;
④ Marka masaafada u dhaxaysa taarikada silsiladaha deriska ahi ay dhaafto shuruudaha muhiimka ah, saxanka silsiladda ayaa dhaawacmi doona sababtoo ah hawlgalka culeyska muddada dheer ah.