Fon6.jpg (5138 bytes)calcul.jpg (4396 bytes)

calres1.jpg (18808 bytes)
The Symbols used:
L = Center Length                   (m)
H = Lift of fall                          (m)
W= Belt width                      (mm)
V = Belt speed                 (m/sec)
B =Troughing angle                   (0)
S = Safety factor             (often 10)
Im= Capacity                          (T/h)
a =Belt wrap on drive pulley        (0)
u =Belt friction on drive pulley
Cd=Efficiency factor drive system       (0,85 - 0,95)

Outside diameter (mm)

 

 

 

 

 

 

 

 

 

gtr = Troughing idler weight (kg)

dtr = Troughing idler distance (m)

Gtr =  Troughing idler weight/m.(gtr/dtr) (kg/m)

grt = Return idler weight  (kg)

drt = Return idler distance (m)

Grt = Return idler weight/m (grt/drt) (kg/m)

* Troughing idler distance (dtr) generally 1, 1,2 or 1,4 m.

* Return idler distance (drt) 2 x or 3 x dtr.

Belt width (mm) 51 70 89 108 133 159 191 216
Flat Troug. Flat Troug. Flat Troug. Flat Troug. Flat Troug. Flat Troug. Flat Troug. Flat Troug.
300 1,6 2,4 2,7 4,1
400 1,9 2,7 3,2 4,6
500 2,2 3,0 3,7 5,1
650 4,4 5,8 6,5 9,1
800 5,4 6,8 7,8 10,4 11,4 16,0
1000 7,8 11,7 13,3 17,9 17,5 23,5
1200 15,7 20,3 20,7 26,7 28,3 36,9
1400 23,2 29,2 31,7 40,3
1600 25,8 31,8 35,2 43,8
1800 38,7 47,2 55,5 70,5
2000 42,2 50,8 60,3 75,3
2200 65,1 80,1 84,7 104,7
2400 69,9 84,9 90,9 110,9
2600 74,8 89,8 97,1 117,1
f  is function of belt speed.
Belt speed V (m/sn.) 3 4 5 6  

 

f = Idler friction factor                              0,017 Conveyor with light running  idlers and material with lowinternal friction

0,02 Standart value for normal conveyors and normal materials

Correction factor for f -%15 -%10 0 +%10
f  is function of temperature.
tC +20 +10 0 -10 -20 -25 -30 0,023- 0,027 Unfavorable working conditions, bad maintanence, dust conditions, material with high internal friction
Ct 1,0 1,1 1,4 2,0 2,7 3,2 3,8

Rubber Conveyor Belts | Fabric | Cold Vulconised Adhesive

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