Belt conveyor -return idlers - Mechanical engineering ...

Hi all. I was wandering if anyone can explain or recommend a useful url regarding my question. I am tryingto find info on how jammed (seized) trough or return idlers affect the performance of the belt conveyor.

Thank you

tombak71 The amount of drag a jammed return idler will cause will depend on the co-efficient of friction between the roller and belt and the weight/force of belt. This is going to vary greatly from belt to belt and due to roller spacing. There are also many factors which will effect the co-efficient of friction such as temperature, oil, dirt and speed.

Remember that the return rollers ride on the &#;top&#; of the belt so if you have a rough top &#;sticky&#; belt it can make a big difference. You should be able to get the co-efficient of friction from the belt mfg.

Barry
Possibly more important than friction is belt tracking. With non-rotating idlers there will be build-up on the roller. This will inevitably be non-uniform. Since a belt tends to align itself perpendicularly with a downstream pulley, accumulated material on the roller will cause the belt to track off.

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