Reply by crank49

  • Advertise with us

Posted on does a drum idler really need to be crowned

View crank49's profile


4032 posts in 3027 days

#1 posted 08-08-2011 05:56 PM

If you mean the pulleys at the ends of the conveyor, they are called the head pulley and the tail pulley. The head pulley is most often the one that is driven by a power source and is usually at the discharge end of the conveyor. The tail pulley is normally not driven and is at the input end of the belt. The tail pulley is usually the one that is crowned. It is also usually mounted in such a way that its axis can be adjusted to control tracking. This is done by mounting the bearings in adjustacle sliding supports; these are commonly called “take-up” bearings. The crown of the pulley will help make the belt run to the center of the pulley. I reduces the sensitivity of the alignment adjustments. But, crowning is not absolutely required. Without it, however, you better have easy access to the tracking adjustments because adjustments will probably be needed often.

Idler pulleys are ones in between the head and tail and only serve to support the load. There are some special idlers used on very long belt conveyors called tracking idlers that can center the belt automatically.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics