You would certainly have a much stronger belt with steel cord with less permanent stretch. N/N is all nylon construction and will stretch much more than steel cord. I hop you have allowed for that in your calculation. You may want to take a look at P/N with polyester running lengthways and nylon running crossways which doesn't stretch as much as nylon/nylon .

But any belt is only as good as the splice used - therefore I would be more concerned with who is going to do the splice. ■

The nylon belt will cost more that the steel cord. Your design of the conveyor via your given specifications, also beg for larger costs.

We today design 1200 mm wide overland conveyors to transport over 4500 t/h.

It seems your belt width, and therefore also strength, and also power will penalize your client/project capital and operating costs in substantial ways. As noted the steel cord belt is normally designed with about half the necessary safety factor, will consume about half the power, can take advantage of much wider idler spacing, etc.

The single potential disadvantage is the need for concave vertical curves. This will favor the fabric belt with lower elevated steel costs.

2% sag is not practiced today. Find a designer that can provide the best cost / performance. ■

Dear Sir,

For particular application NN belt will be costlier. Steel cord belt would be more appropriate.

Regards.

A.Banerjee ■

I would use EP synthetic carcasse belting, but I am surprised everyone is saying that steelcord would be cheeper. Steel costs a fortune now, and the minimum covers are much thicker for steelcord.

Regards

LSL Tekpro ■

Dear Sir,

NN belt would be costly for such application.

Regards.

A.Banerjee ■

hello samiran

I think belt selection is made on the type of material handled and i donot think steel cord is advisiable for thisapplication.

Secondly steel cord is costlier and not maintenance friendly in production units. ■

Why not suitable for coal RK?

LSL Tekpro ■

hi,

I don't mean that steel cord belt is not suitable for handling coal, these r generally selected for handling very large lumps.

Otherwise can be used for any material.

regards

RK ■

Hi RK

Fabric good for large lumps. (Use many plies)

We sometimes put fabric into steelcord belts to protect the cords from lumps.

I don't use anthing less than St1250 if there are lumps about as the cords are too small and get damaged.

For coal you can normally use either.. no problem.

Cheers

LSL Tekpro ■