4 inch tail pulley shaft failure
4 inch tail pulley shaft failure
(OP)
bucket elevator tail pulley shaft keeps failing. the shaft is made of mild steel.it is always break closest to the bore of the pulley.
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
4 inch tail pulley shaft failure
|
RE: 4 inch tail pulley shaft failure
RE: 4 inch tail pulley shaft failure
If the break occurs at the inner edge of the pulley, you might consider fretting corrosion. If the pully is not tight enough on the shaft, micro movement of the pulley on the shaft can cause fretting corrosion which creates stress risers and finally a complete failure of the shaft from fatigue. This can happen unbelievable quickly.
RE: 4 inch tail pulley shaft failure
yes its where the bending load would be highest. another thing the shaft is supported by bronze bushing fitted to the slide plate.this slide plate is for tensionig the belt.the shaft is also supported by bearing on each side thy are vertical mounted and is also fitted on the side plate.when ever the shaft fails the bushings also fails.the thing is the bushings is always worn at the top.
RE: 4 inch tail pulley shaft failure