What is EP Conveyor Belt?

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EP conveyor belt is also called polyester conveyor belt(NP conveyor belt in the U.S), the &#;EP&#; is short for Polyester fabric, which includes polyester toward longitudinal(warp) and polyamide for latitude(weft), EP fabric plies are sandwiched between rubber skim coats for adhesion and load support, bottom and top cover compounds are added for maximum protection of the belt carcass.

The EP conveyor belt consisting of  2 to 6 EP fabric plies, EP rubber conveyor belt has the same merit as Nylon(NN) conveyor belt, its tensile carcass is made of warp polyester and weft nylon knitted fabric, its performance is characterized by low elongation in the warp direction and excellent troughing formation in the longitudinal direction. The strength of the EP conveyor belt will not decrease in a humid environment, no mildew occurs also, the initial modulus of the polyester is high, and a lower safety factor can be taken, it is suitable for conveying materials under medium, long-distance, and high load and high-speed conditions.

EP rubber conveyor belt is widely used in the mining and processing industries for transporting bulk or lumpy materials such as quarrying, ore, coke, aggregates, crops, sand, clinker, chemicals, construction materials, etc. EP fabric has the advantages of:

1.Lower longitudinal elongation.

2.Full resistance to mildew, moisture and rotting.

3.Good flexibility and trough ability.

4.Short take-up lengths.

5.Suitable for middle and long-distance transportation of higher load and speed.

EP fabric also has excellent compatibility with other rubbers, so it can be combined with any type of cover grade to make it a perfect match for almost any application, this allows EP conveyor belt to convey basically any type of product in any environment, from fine powders to large lumps, from dry to greasy materials, from extremely cold to very hot conditions.

Due to the above excellent performance of EP conveyor belt and its very economical price, it has become the most widely used type of conveyor belt in the world, taking light and heavy duty carrying work in the fields of seaport, steel mill, mining, cement plant, metallurgy, agriculture, electric power, chemical industry etc.

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Key Symbols of EP Conveyor Belt:

Key Symbols of EP Conveyor Belt:

Representation method of EP conveyor belt: EP/5 900*5 (6.5+3.0)=200m
The polyester layer represented by EP, EP means the total tensile strength of belt is N/mm, 5 represents the number of EP layers, so each EP layer will be 200N/mm(each EP layer type is EP200 correspondingly), 900 represents the width of the conveyor belt, , 6.5 represents the thickness of the upper cover rubber, and 3.0 represents the bottom cover rubber. the 200 represents the length of the conveyor belt.

Capacity, tensile, conveying capacity, carrying capacity, belting conveying capacity, belting load capacity, tensile strength, belting TPH capacity, tons per hour capacity, Ep tensile rating, NN tensile rating, full thickness tensile strength of belting, nylon belting tensile strength, ep belting tensile class, polyster nylon fabric tensile, belting tensile rating

Nomenclature of EP NN Rubber Conveyor Belt

Conveyor Belt
Designation
EP or NN Allowable
Maximum
Belt Tension
(ABT) Nominal
Carcass
Thickness Nominal
Carcass
Weight Max. belt Width (mm)
for satisfactory load
support for material
bulk density up to
(t/m3) Min. belt Width (mm)
for Adequate
Troughing of Empty
Belt * Tensile Rating / Ply (kN/m) (mm) (Kg/m2) 1.0 1.6 2.5 20º idlers 30º / 35º idlers 45º idlers 200/2 20 2.2 3.54 650 500 400 250 300 350 250/2 25 2.6 3.90 800 650 500 300 350 400 315/2 31 2.6 4.00 800 650 500 300 350 400 400/2 40 3.2 4.96 800 650 350 400 450 500/2 50 3.8 5.28 800 650 350 400 450 630/2 63 4.6 6.20 800 400 500 600 250/3 25 2.8 3.79 800 650 350 400 450 315/3 31 2.8 3.93 800 650 350 400 450 400/3 40 3.4 4.29 800 650 350 450 500 400/4 40 3.9 5.24 800 400 500 600 500/3 50 3.4 4.44 900 800 350 450 500 500/4 55 4.7 5.72 100 400 500 600 630/3 63 4.0 5.07 800 400 500 600 630/4 70 4.7 5.92 100 400 500 600 630/5 70 6.0 7.15 400 650 550 800/3 80 6.5 7.77 450 550 650 800/4 90 5.5 6.76 450 600 750 800/5 90 6.0 7.40 500 650 750 /3 100 6.8 8.34 450 550 650 /4 110 6.7 7.36 500 650 800 /5 110 7.0 8.45 650 800 900 /4 140 8.9 10.36 650 800 900 /5 140 8.5 9.20 650 800 900 /4 155 9.3 11.12 650 800 900 /5 155 11.3 12.95 800 900 /5 165 11.3 12.95 800 900 /6 165 10.3 11.04 800 900 /4 180 10.4 12.36 650 750 900 /5 180 11.8 13.90 800 900 /6 180 13.7 15.54 /6 200 13.7 15.54 /4 220 11.8 14.48 800 /5 220 13.2 15.45 /6 220 14.3 16.68

* kN per mtr : Full Thickness Tensile Strength # values subject to manufacturing tolerance.
Carcass thickness of rubberized fabric plies also manufactured to desired total belt thickness, thus, weights given are as per above thickness, else proportionately increase-decrease weight roughly as per total inter-ply thickness.
Approximate cover Weight of M24, N17 and HR grades rubber per 1 mm thick = 1.1 kg/M2

Conveyor Belt Capacity Ton Per Hour in relation to Speed

Conveyor belts capacity in tons per hour (TPH) is based on material weighing 100 lbs. per cubic foot, 20° material surcharge angle with three equal length rolls on troughing idlers.

CAPACITY (TPH) = .03 x Belt Speed (FPM) x material weight (lb. per cu. ft.) x load cross section (sq. ft.)

TPH conveying capacity with 20° Troughing Idlers

Belting Width in
Inches Belt Speed in feet per minute (FPM) 100 150 200 250 300 350 400 450 500 550 600 650 16 42 63 84 105 125 147 168 - - - - - 18 54 80 110 135 160 190 218 243 270 - - - 24 100 150 200 250 300 350 400 450 500 550 600 - 30 160 240 320 400 480 560 640 720 800 880 960 36 235 350 470 585 700 820 935 42 330 495 660 825 980 48 440 660 880 54 570 855 60 720

TPH conveying capacity with 35° Troughing Idlers

Belting Width in
Inches Belt Speed in feet per minute (FPM) 100 150 200 250 300 350 400 450 500 550 600 650 18 66 100 135 170 200 235 270 305 338 - - - 24 125 187 250 310 380 435 500 560 625 685 750 - 30 200 300 400 500 600 700 800 900 36 300 450 600 750 900 42 420 635 845 48 560 845 54 740 60 935

Max Belt Speed in relation to Lump and Width

Belt Width in
Inches Maximum Size of Lumps *
(Inches) Maximum Belt Speeds in feet per minute
(FPM) Equal Size
Lumps Mixed with 90%
Fines Light Free
Flowing
Material As
Grain,
Pulverized
Coal 50
Lb./Cu. Ft. Average
Material As
Sand,
Gravel, Stone, Coal,
Fine Ore 100
Lb./Cu. Ft. Abrasive
Material As
Coal,
Screened
Lump Coke
30 To 50
Lb./Cu. Ft. 16 2 4 500 400 350 18 3 5 500 500 400 24 5 8 600 600 450 30 6 11 700 650 500 36 8 15 800 650 500 42 10 18 800 650 500 48 12 21 800 650 500 54 14 24 800 650 500 60 16 28 800 650 500

* Based on 20° Troughing Idlers and 100 Lb. Per Cu. Ft. Material.
Conversion: Cu. Ft. = BPH x 1.25

Capacities of flat belts are taken at one-half of those listed above.

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