Dear Mr. Mulani,

I agree to your point, but this is applicable only when the Discharge Pulley is also the Drive Pulley of the conveyor.

For all other cases, this may be feasible, if there is only one concern i.e. what you have indicated.

Regards ■

Dear all,

After giving due consideration to your point that a troughed pulley will have variable speed at various radius and the belt can not sustain different speed across the width.

I still bank on the advantages those can be drawn.

I started with a pulley construction, which is flat in the middle portion and straight slat on sides. Exactly resembling the cross section of Troughing Idlers. I never meant a concave pulley.

Now, if we fix the middle portion with shaft as usual by hub & key. the slanted sides will be mounted on bearings, so that they can rotate at different speeds than the middle portion.

Again, I am looking for Discharge pulley to modify, not the Drive Pulley.

Everything starts with idea. we build up the practical solution on ideas only.

Please let me have your observations. ■

But differential belt speed will still be a problem outboard of the centre portion of the pulley where the slatted pulley will effectively be part of a cone. You would need a multiplicity of narrow sections to overcome this.

Also, what are the implications for belt tracking with such an arrangement? ■