Steel cord conveyor belts

Steel cord conveyor belts for general use convey loose and lump materials on heavy-duty conveyors over long distances and under difficult conditions. These are used in all fields conveying line, such as mine industry, metallurgy, electricity, wharf and building materials, for piece materials, drop materials and powder materials, in the temperature range -30 °C … +60 °C.

The carcass consists of high-strength steel cords placed in one plane. The rubber covers –according to DIN 22 131 (X,  Y, Z, W grade) or to ISO 15236-2 : 2004 by request of customer.

Steel cord conveyor belts characteristics according to DIN 22131/1-88
Characteristics Resistance class
ST800 ST1000 ST1250 ST1600 ST2000 ST2500 ST3150 ST4000
Breaking force of conveyor belt, N/mm width, min. 800 1000 1250 1600 2000 2500 3150 4000
Cord diameter, mm, 3,85 ±0,2 3,85 ±0,2 4,50 ±0.2 5,85 ±0,3 5,85 ±0,3 7,00 ±0,3 8,00 ±0,3 9,00 ±0,3
Cord spacing, mm 15 ±1.5 12 ±1.5 14 ±1.5 15 ±1.5 12 ±1.5 15 ±1.5 15 ±1.5 15
Thickness of rubber covers, mm, min *) 4 4 4 4 4 5 5.5 6.5
Belt thickness **) Thickness, mm Request of the client
Deviation from thickness +10 % -0.5
Length, m Request of the client
Edges rubber width, mm, min. 15
Breaking force of cord, kN, min. 13.2 13.2 19.2 26.4 26.4 41.2 52.0 66.0
Adhesion rubber/cord, N/mm, min 70 70 85 85 85 100 110 120
Width, mm Number of cords
Width Deviation from width
650 ± 7 42 51 44 40 51 40 40 40
800 ± 8 52 64 55 50 64 50 50 50
1000 ± 10 65 81 69 64 81 64 64 64
1200 ± 10 78 97 84 77 97 77 77 77
1400 ± 12 90 114 98 90 114 90 90 90
1600 ± 12 104 131 112 104 131 104 104 104
1800 ± 14 117 147 127 117 147 117 117 117
2000 ± 14 130 164 141 130 164 130 130 130
Cord corrosion protection Zinc or Brass
*) Thickness of rubber covers is specified to order of customer.
**) Belt thickness is given from addition of cord diameter and thickness of rubber covers.

 

Cover grade Tensile strength, min., (daN/cm2) Elongation at break, min., (%) Abrasion loss, max., (mm³) Use
Group Type Standard
1. W DIN 22131-88 180 400 90 These cover rubber grades have characteristics to provide a very high abrasion and cut-and-gouge resistance as well as weather resistance
2. X DIN 22131-88 250 450 120
3. Y DIN 22131-88 200 400 150 The cover rubber grades are widely used for general conveyor belts and superior resistance to abrasion, weather, and cutting.
4. K * DIN 22131-88 200 400 200 Flame resistant steel cord conveyor belts are specially designed to convey loose and bulk materials in explosion-hazardous locations; these are used for aboveground mining applications that require fire resistance

*) For heavy inflammable conveyor belts according to DIN 22103 (  ISO 340 equivalent) with antistatic covers according to DIN 22104      ( ISO 284).