Assuming your tension figure is correct and the idler spacing and trough angles are at acceptable values the ST - rating you seek may be calculated as follows:

ST (signifies steel cord which will not normally fit your specs)

EP =( fabric polyester with 10:1 safety factor)

EP =[36500 N / (630 mm)] x SF=10 = 579 N/mm or about 600 N/mm

This does not include load support which will need to checked against carcass rating and number of plies.

This does not include idler troughability which needs to be assessed by the belt manufacturer. You have not identified the idler trough angle, shape and spacing. ■

Uugh, a little hasty. Upon a reread the belt with is 1200mm wide not 630.

The fabric belt strength will then drop to:

EP = (36500 N/1200mm) x 10 = 304 N/mm fabric strength.

Most likely you can design for a EP 400 N/mm with a short spacing or EP 600 N/mm with a large spacing and better load support.

Your 1200mm wide belt means you will be running quite slow.

The idler support details need to be evaluated for the given belt and its cover gauge.

I started this thread response at 9am and now its 5:30pm. ■

I do not make a practice of engineering on the forum. I will offer the following:

1. The fabric belt seems to be underated at EP-1250 N/mm with a fabric safety factor < 7:1. This assumes I guessed correctly at the take-up belt line force.

2. I do not know the gravity take-up belt line force. This is important on how the take-up is sized and its afftect on the fabric rating.

3. The fabric cover selections seem more like a steel cord .

4. A steel cord belt would not be overstressed with a rating:

ST-1200N/mm and with 6 x 4 covers.

SF = 6.7:1

These figures are with my estimate of the gravity take-up.

Ambient temperature is an important design value that is missing and has not be taken into account.

I offer no more until a P.O. ■

I sometimes make errors in quick responses. However, I think with a second check you have made some major miscalculation:

T1 cannot = 36,500 N

TE cannot = 27,000 N

These values are way off. I did not use them in my resonse, but did look at what they should be. Big difference. ■

Please make a very quick check and see:

width = 1200mm

belt breaking strength = 1250 N/mm of fabric

At belt SF=10:1 fabric working tension would normally be:

width(mm) x break strength(N/mm) = 1200 x 1250 = 1500 kN/10

thus, working strength ............................................= 150 kN not 36.5 kN @ T1 ■