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Standard Steel Cord Conveyor belt Range As per DIN 22131

ST Rating
(kN/m)
Recommended
Cord Dia (mm)
Pitch (mm)
± 1.5
No. of Cords — Belt Width (mm)Min. Recommended Pulley Dia (mm)
for MAWT Utilisation > 60%
8009001000105012001400150016001800200022002400ABC
5002.6126471818497114122131147164181197500400315
5602.7126471818497114122131147164181197500400315
6302.9126471818497114122131147164181197500400315
7103.0126471818497114122131147164181197630500400
8003.1126471818497114122131147164181197630500400
9003.3126471818497114122131147164181197800630500
10003.5126471818497114122131147164181197800630500
11203.7126471818497114122131147164181164800630500
12504.214556169728498104112127141155169800630500
14004.514556169728498104112127141155169800630500
16005.015505764677790971041171301441571000800630
18005.415505764677790971041171301441571000800630
20006.015505764677790971041171301441571000800630
22506.215505764677790971041171301441571000800630
25006.6155057646777909710411713014415712501000800
28007.0155057646777909710411713014415712501000800
31507.4155057646777909710411713014415712501000800
35508.01550576467779097104117130144157140012501000
40008.61550576467779097104117130144157140012501000
45009.2164652596571849096109121134146140012501000
500010.4174348556066788490102113125137160012501000
540011.0174348556066788490102113125137160012501000
630011.6174348556066788490102113125137200018001600

Standard Steel Cord Conveyor belt Range As per AS 1333

ST Rating
(kN/m)
Recommended
Cord Dia (mm)
Pitch (mm)
± 1.5
No. of Cords — Belt Width (mm)Min. Recommended Pulley Dia (mm)
for MAWT Utilisation > 60%
8009001000105012001400150016001800200022002400ABC
5002.613.8566370748499106113128142156170500400315
5602.813.8566370748499106113128142156170500400315
6303.013.8566370748499106113128142156170500400315
7103.113.8566370748499106113128142156170630500400
8003.313.8566370748499106113128142156170800630500
9003.815.350566366768996102115128141154800630500
10004.015.350566366768996102115128141154800630500
11204.315.350566366768996102115128141154800630500
12504.515.350566366768996102115128141154800630500
14004.815.3505663667689961021151281411541000800630
16005.517.345505659677985901021131241361000800630
18005.917.345505659677985901021131241361000800630
20006.417.345505659677985901021131241361000800630
22506.817.3455056596779859010211312413612501000800
25007.419.440455052607075819110111112112501000800
28008.019.4404550526070758191101111121140012501000
31508.619.4404550526070758191101111121140012501000
35509.219.4404550526070758191101111121140012501000
40009.819.4404550526070758191101111121160014001250
450010.419.4404550526070758191101111121160012501000
500011.019.44550526070758191101111121160012501000
560011.819.44550526070758191101111121200018001600
630012.820434850586873788898108118200018001600

STEEL CORD BELT SPLICING

BELT TYPENumber of StepsMinimum step length (ls)Splice length (lv)
ST-1250 and below1350650
ST 16001450750
ST 200024001150
ST 250025001350
ST 315026501650
ST 350036502350
ST 400037502650
ST 450038002800

ROLL DIAMETER CALCULATIONS AND CHART

BELT
LENGTH
L (m)
BELT THICKNESS d (mm)
10121416182020242628303234363840
100.610.630.650.670.690.710.730.750.760.780.790.810.830.840.860.87
200.710.750.780.810.840.870.900.930.960.981.011.031.061.081.101.13
400.870.930.981.031.081.131.171.211.251.291.331.371.411.441.481.51
601.011.081.151.211.271.331.391.441.501.551.591.641.691.731.781.82
801.131.211.291.371.441.511.581.641.701.781.821.871.931.982.032.08
1001.231.331.431.511.591.671.751.821.891.952.022.082.142.202.262.31
1201.331.441.551.641.731.821.901.982.052.132.202.272.332.402.462.52
1401.431.551.661.761.861.952.042.132.212.292.372.442.512.582.652.72
1601.511.641.761.871.982.082.172.272.362.442.522.602.682.752.832.90
1801.591.731.851.982.092.202.302.402.492.582.652.752.842.922.993.07
2001.671.821.952.082.202.312.422.522.622.722.812.902.983.073.153.23
2201.751.902.042.182.302.422.532.642.742.842.943.043.133.213.303.38
2401.821.982.132.272.402.522.642.752.862.973.073.173.263.353.443.53
2601.892.052.212.362.492.622.742.862.983.093.193.293.393.493.533.67
2801.952.132.292.442.582.722.842.973.093.203.313.413.533.623.713.80
3002.022.202.372.522.672.802.943.073.193.313.423.533.643.743.843.94
3202.082.272.442.602.752.903.043.173.293.413.533.653.783.853.974.07
3402.142.332.512.682.842.983.133.263.393.523.643.763.873.984.09 
3602.202.402.582.752.923.073.213.353.493.623.743.863.984.09  
3802.262.462.652.832.993.153.303.443.583.713.843.974.09   
4002.312.522.722.903.073.233.383.533.673.813.944.07    
4202.372.582.782.973.143.313.473.623.763.904.04     
4402.422.642.843.043.213.383.553.703.853.99      
4602.472.702.913.103.293.463.623.783.934.08      
4802.522.752.973.173.353.533.703.864.02       

Selection of Cover Rubber Quality

Cover
Type
Standard
& Grade
Physical PropertiesMaterialCharacteristics
Min. Tensile
Strength (N/mm²)
Min. Elong.
at Break (%)
Max. Abrasion
Loss (mm³)
Max. Temp.
(°C)
General PurposeDIN X2545012080Iron ore, copper ore, stone, rock, etc. lignites overburdenExtra abrasion, cut & gouge resistance. Suitable for transporting sharp, large lumps & rugged material under adverse loading condition
AS M2445012080
SANS M2545012080
ISO H2445012080
IS M-242445012080
DIN Y2040015080Fine coal, ash, cement, earth, coal, salt, etc.Abrasion resistance for normal service. Suitable for transporting moderate abrasive material.
AS N1740020080
SANS N1740015080
ISO D1840010080
Superior Abrasion ResistantIS N-171740015080Quarries, sandpits, lime stone, coal, ash, ore, phosphate, raw material for glass works, etc.Superior abrasion resistance for the heaviest service condition. Suitable for abrasive material with a large proportion of fines.
DIN W184009080
AS A174007080
Heat ResistantDIN T12.5350250125Hot sinter, hot cement, hot powder, chemical & fertilizer, etc.Heat resistant and also in cut, abrasion and tear resistant.
IS T112.5350250125
IS T212.5350250150
Fire ResistantAS F1430020080Materials having fire hazards e.g. sulphur, coal, etc.Resistance to flame propagation and burning; suitable for surface application.
CAN CSA-C1735020080
ISO 3401735017580
DIN K (with cover)2040020080
SANS F1440018080Explosive and fire hazardous material, coal powder, etc.Resistance to flame propagation, extremely low burning rate; suitable for underground operation.
IS-UG16350200100
BCS FR17350175100
Oil & Grease ResistantDIN G12250175100Chemical & fertilizer, wood, paper & pulp, recycling plants.Resists penetration and therefore the damaging effect of oil and fat.
AS Z12250175100
IS OR12250175100

Special Cover Grades Suiting to a Particular Application.

Cover
Type
NRC
Brand
Physical Properties Material Characteristics
Min. Tensile
Strength (N/mm²)
Min. Elong.
at Break (%)
Max. Abrasion
Loss (mm³)
Max. Temp.
(°C)
Heat Resistant UHR 12.5 350 200 Max. 180°C Hot sinter, hot cement, fertilizer, etc. Super heat resistant and also in cut, abrasion and tear resistant
UHR Super 10 300 200 Max. 240°C
High Wear & Tear Resistant HWT 22 400 90 80 Hot clinker, hot cement, hot chemicals and fertilizer etc. Suitable for high abrasive applications
Energy Optimized M EOB 18 400 100 100 Quarries, sand & gravel, limestone, coal, ash General purpose premium quality energy optimized cover
LRR EOB 18 400 100 100 Fine coal, ash, cement, earth, coal, salt, etc. General purpose energy optimized cover
FR EOB 15 400 130 80 Explosive and fire hazardous materials, e.g. coal powder, etc. Fire resistant grade EOB as per FR CAN CSA-C

Cover Gauge

Type of Influences and Their Rating Sum of the Rating Values Additions to Minimum Thickness (mm)
Loading Conditions Favourable – 1 5 to 6 0 to 1
Moderate – 2
Not favourable – 3
Frequency of Loading Favourable – 1 7 to 8 1 to 3
Moderate – 2
Not favourable – 3
Grain Size Favourable – 1 9 to 11 3 to 6
Moderate – 2
Not favourable – 3
Density Favourable – 1 12 to 13 6 to 10
Moderate – 2
Not favourable – 3
Abrasion Factor Favourable – 1 14 to 15 > 10
Moderate – 2
Not favourable – 3