Hello there Roland..

For horizontally curved conveyors, we have to calculate the training forces that you get from forward tilting of the idlers.

Research has shown that these forces increase with forward tilt, but after so many degrees, the training force does not get any bigger.

For this reason, I don't forward tilt by any more than 2 degrees.

At this value, I know what training forces are, and I can then also easily calculate the increased drag.

What I have found is that there is negligible power increase, compared to say temperature, and accuracy of loading etc.

I have also seen that there is no noticable additional wear to the bottom cover of my curved belts.

For tapered rolls I would apply the same principles, and therefore limit the taper to give training effect, but with negligible increase in drag.

Hope this helps

Cheers

LSL Tekpro ■

Graham,

I agree with your logic.

This may be a long shot but I am currently working on an overhead tripper system that discharges onto a reversible conveyor. From all of the thread participants, can anyone provide me with the name of the supplier and contact information for these idlers with tapered wing rolls?

Joe Dos Santos ■

Joe

The only one that I know of is Dyna Engineering in Australia. Their contact info is on their site.

http://www.dynaeng.com.au/idlerroller.html

I am sure there are others but as you are aware this is not a common practice in North America.

Good luck.

Gary ■

Gary,

Thank you. I just sent them an Email.

Joe Dos Santos ■

Originally Posted by Roland Heilmann

Dear Joe,

i made a stante pede survey from simple bing search "tapered idler roller" but am not sure the findings would be applicable on a large scale in a conveyor. I think those rollers are rather used in training stations, as seen in the fotos of that other thread. As far as i could investigate, such rollers come usually in small quantities. The manufacturer of a series would have to need some quite good ideas to produce such rollers other than by turning the taper from a heavy piece of tube. But, there's no end to ideas, at that.

Thank you, and with kind Regards

R.

Dear Mr. Ronald Heilmann,

You would have continued in the same previous thread, as below.

https://forum.bulk-online.com/showth...-trough-idlers

Regards, ■

Rolland,

Thank you. I did contact the cited manufacturer. They are pleased to supply the tapered rolls and even complete idlers that utilize the tapered rolls at the wings. They have no catalogues for the complete idlers so I conclude that it must not be all that popular. I may try to get a quote to see if it makes economic sense. Based on Graham's comment, with which I agree, I would make the taper 2 deg, equivalent to a 2 deg forward tilt at a single direction conveyor.

Joe Dos Santos ■