FACTORS EFFECTTING ON FAILURE AT CARDAN COUPLINGS AND PRECAUTIONS WHICH MUST BE TAKEN

In this study, failures caused by bad usage during operation and by manufacturing are examined. Failures occurred on cardan coupling are analyzed by using of photographs which have been taken. As not to be occurred any failures on cardan coupling before its usage life, it has been seen that system must not be over loaded, exact oiling in areas which have relative motion must be used, oil used must have high performance at both low and high temperature (- 30 o C, 120 o C), cross pin and needle bearing must have high strength against to wear and shock loads, internal strength on the areas which have been connected by welding must be decreased and coupling must be balanced as statically and dynamic.

KARDAN KAPLÝNLERÝNDE HASARA ETKÝ EDEN FAKTÖRLER VE ALINMASI GEREKEN TEDBÝRLER

Bu çalýþmada kardan kaplinlerinde imalattan ve yanlýþ kullanýlmadan dolayý iþletme esnasýnda oluþabilecek muhtemel hasarlar ele alýnmýþtýr. Çalýþma þartlarý belli olan kardan kaplinlerinde oluþan hasarlar incelenerek hasara etki eden sebepler ve faktörler araþtýrýlmýþtýr. Alýnan numuneler incelenerek yapýlan araþtýrmalar sonunda elemanýn belirlenen ömründen önce hasara uðramamasý için sistemin aþýrý yüklenmemesi, izafi hareketli bölgelerde yaðlamanýn tam olmasý, kullanýlan yaðýn düþük ve yüksek sýcaklýklarda(- 30 o C, 120 o C) özelliðini kaybetmemesi, istavroz muylusu ile iðneli yataðýn darbeli yüklere ve yüzey aþýnmasýna karþý mukavim olmasý, çatal ile ara milinin baðlandýðý kýsýmda kaynaktan oluþan iç gerilmelerin giderilmesi ve kaplinin statik ve dinamik olarak dengelenmesi gerektiði görülmüþtür.