Centroid

Centre of Area

Results of calculations required to determine the position of the centroid of the cross - sectional area of the material passing over the discharge pulley are governed by two factors:

1. I As outlined on sheet 2 it is assumed that the material adopts a geometrically regular segmental configuration,

2. The assignment of an arbitrary value for edge distance which shall be e = 0,055W + 23 which is standard for flat conveyor belt applications or a = 50 whichever is the lesser.

This is based upon the supposition that at the discharge pulley, the material is unrestrained widthwise and therefore only a small nominal allowance is necessary.

This lesser edge distance value will be designated em. It must be emphasised that this modified value em is applicable to this standard only, it has no significance elsewhere.

The assigned values of em and L are given in the table below together with standard edge distances e for comparison purposes only.

W	e	em	L
350	42,25	42.25	265.5
400	45	45	310
450	47,75	47.75	354.5
500	50,5	50	400
600	56	50	500
750	64,25	50	650
900	72,5	50	800
1050	80,75	50	950
1200	89	50	1100
1350	97,25	50	1250
1500	105,5	50	1400
1650	113,75	50	1550
1800	122	50	1700
2100	138,5	50	2000