Features of Fenner Steel Cordconveyor belting

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Specifically designed high strengthcoated steel cords.

Controlled and equal tension appliedto each cord throughout thevulcanisation cycle.

Meticulous attention to quality duringevery stage of manufacture followingISO 9001-2000 accredited qualitysystem.

Excellent cord to rubber adhesionthrough collaboration with worldwideFenner group of companies.

Open cord construction ensuresdeep penetration of the high gradebonder rubber into the steel cord.

Modern, wide-width rubber calenderproduces accurate sheets ofunvulcanised rubber compositesheets for use in the steel cordproduction line.

High grade bonder, shared cordtension and alternating cord twistprovide consistent elastic propertiesin the reinforcement plane.

Custom design of belt splices carriedout by Fenner service teams.

Optional Rip Detection loopsavailable in all belt constructions.

Optional steel or textile breakers canbe inserted in covers duringmanufacture.

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Benefits of Fenner Steel Cordconveyor belting

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High strength and low elongation ofspecifically designed coated steelcords deliver superb performanceover long distances and at thehighest belt tensions.

High grade coating of the cords andmeticulous attention to quality duringevery stage of manufacture returnmaximum cord to rubber adhesion.

Excellent cord to rubber adhesioncombined with deep penetration ofthe bonder rubber into the open cordensure all specification requirementsfor cord pull-out are exceeded.

Flex fatigue life of the cordsembedded in specially formulatedrubber guarantee long belt lifeexpectancy.

Very high troughability across the fullstrength range ensure that even thenarrowest belts will conform well indeep trough idlers.

Extremely high elastic modulus ofthe steel cords limits elasticelongation. Short take-ups arepossible even on very long centreconveyors.

Dynamic forces are minimised dueto the consistently high elasticproperties of the reinforcementplane.

Full strength integrity at all joinscarried out by Fenner service teams.Joint life expectancy is equal to beltlife expectancy.

SANS 1366

The standard range of Fenner steelcord that complies in all respects toSANS 1366 specification is listed in thetable 1.

The belt mass given is based onbelting manufactured with type Mcovers of the minimum thickness oneach side. If other types of cover orcover of a greater thickness than theminimum is to be used then table 2

is used to obtain the SG of the specificcover type. Multiply the SG obtainedfrom table 2 by the cover thickness andadd this to the carcass mass.The belt thickness is calculated byadding the thickness of both covers tothe cord diameter.

BeltClass

CordDiameter

CordPitch

CarcassMass

BeltMass

with mincovers

MaxOperatingTension

mm mm kg/m2

kg/m2

kN/m

St 500 3.1 20.0 6.5 15.5 75

St 630 3.2 16.0 7.2 16.3 95

St 800 4.1 17.0 9.9 18.9 120

St1000 4.1 14.5 10.7 19.7 150

St1250 4.4 12.0 13.0 22.1 188

St1400 5.4 19.0 13.7 25.0 210

St1600 5.4 16.0 15.0 26.3 240

St2000 6.3 13.5 20.7 34.2 300

St2500 6.7 15.0 21.2 34.7 375

St3150 6.7 16.0 23.5 37.1 473

St4000 8.4 15.0 31.6 47.4 600

St5000 8.4 17.0 35.5 51.3 750

St6300 12.8 17.0 58.1 83.0 945

MinimumCover

mm

4

4

4

4

4

5

5

6

6

6

7

7

11

Table 1 Standard constructions manufactured to SANS 1366

CoverType

TensileStrength

Elongationat Break

SG

MPa %

A 18.0 400 1.14

C 20.0 400 1.12

F 14.0 400 1.22

M 25.0 450 1.11

N 17.0 400 1.12

AbrasionResistance

mm3

70

150

180

120

150

Table 2 Standard cover types manufactured to SANS 1366

Fenner steel cord has high tenacityopen cords as reinforcement. Resilientbonder rubber surrounds each cordand through a combination of goodflow characteristic and adhesion thecord is permanently embedded in therubber to the very core. The rubberprotects the individual filaments of thereinforcement and allows fatigue freebending through small radiusthroughout the lifetime of the belt.

Table 3 lists the pulley diameters thatcan be safely used for each of thestandard belt classes.Figure 1 shows the cross reference tothe pulley types referred to in the tableof Recommended Minimum PulleyDiameters.

Pulley types

A High tension pulleys with the belt wrap angleexceeding 45º

B Low tension pulleys with belt wrap angleexceeding 45or

C Low tension pulleys with belt wrap angle ofup to 45

º

High tension pulleys with belt wrap angle ofup to 45º

º

Examples

Type A Head pulley, drive pulley and tripper pulley

Type B Tail pulley, take-up pulley, take-up bendpulley and high tension BEND (wrap lessthan 45 degree) pulley

Type C Low tension snub or bend (wrap less than45 degree) pulleys

A

AA

B

BB

C

B

Table 3 Recommended Minimum Pulley Diameters

Amm

Bmm

BeltClass

Cmm

500 400 315

500 400 315

630 500 400

630 500 400

630 500 400

800 630 500

800 630 500

1000 800 630

1000 800 630

1000 800 630

1400 1000 800

1400 1000 800

2000 1600 1400

St 500

St 630

St 800

St1000

St1250

St1400

St1600

St2000

St2500

St3150

St4000

St5000

St6300

Pulley Type

Figure 1 Definition of pulley types

Very short take-up travel is possible withFenner steel cord due to the high elasticmodulus of the belt. Values for the beltmodulus are given in table 4 below. Thehigh modulus ensures that the belt isstable even in high point loading situations.Load support is never an issue. Even verynarrow belts can trough sufficiently in deeptroughing idlers. The table provides guide

vaues for the minimum belt width thatshould be adhered to to ensure full loadcross sectional area can be maintained.With a high modulus it is important that theidlers at transition zones are positioned atthe minimum distance shown in table 5.

BeltModulus

kN/m

33 333

42 000

53 333

66 666

83 333

93 333

106 666

133 333

166 666

210 000

266 666

333 333

420 000

Minimum Belt Width forTroughing Empty

20

mm

600

600

600

600

600

600

600

600

750

750

750

900

900

35

mm

600

600

600

600

600

600

600

750

900

900

900

1050

1050

45

mm

600

600

600

600

600

600

750

750

900

900

900

1050

1050

60

mm

600

600

600

600

600

600

750

750

900

1050

1050

1050

1050

Troughing Angle

BeltClass

St 500

St 630

St 800

St1000

St1250

St1400

St1600

St2000

St2500

St3150

St4000

St5000

St6300

Top of terminal pulley in line withmid depth of the trough.

Case 2

Transitiondistance

Transitiondistance

Top of terminal pulley inline with centre roll of troughidlers.

Case 1

20

1.5W

35

2.6W

45

3.3W

60

4.3W

Troughing Angle (degree)

Table 5 Recommended Minimum Transition Distance

20

2.9W

35

4.9W

45

6.1W

60

7.4W

Troughing Angle (degree)

Table 4 Belt Modulus and Minimum Width for Troughing Empty

W - Belt width W - Belt width

Type 2

Direction of Travel

Tra

nsi

tion

Cord Overlap

Type 1Direction of Travel

Tra

nsi

tion

Cord Overlap

SplicingSplice dimensions for joining the standardrange of Fenner Steel Cord

Tra

nsi

tion

Type 3Direction of Travel

Cord Overlap

SpliceType

1

1

1

1

2

1

1

2

2

2

3

Refer to Fenner Conveyor Belting

Refer to Fenner Conveyor Belting

CordOverlap

mm

600

600

600

700

600

700

700

800

800

900

1000

Butt

mm

N/A

N/A

N/A

N/A

50

N/A

N/A

50

50

50

50

Transition

mm

50

50

50

50

50

75

75

100

100

125

150

SpliceLength

mm

700

700

700

800

1350

850

850

1850

1850

2100

3400

BeltClass

St 500

St 630

St 800

St1000

St1250

St1400

St1600

St2000

St2500

St3150

St4000

St5000

St6300

Table 6 Splice Dimensions

Package dimensionsDimensions of packaged Fenner steelcord belt roll for transport by road.The size of the roll is dependent on the beltthickness and length. Look up the beltthickness from table 1, adding additionalcover thickness when applicable. Project a

vertical line from the belt length axis ontothe belt thickness curve. Then project ahorizontal line onto the roll diameter axis,\.This will be the estimated diameter of theroll to be supplied.

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

100 130 160 190 220 250 280 310 340 370 400 430 460 490

Diameter of Roll of Belting

Length on the roll

10

14

18

22

30

Physical address20 Diesel RoadIsandoGauteng

Postal AddressPO Box 817Isando1600

Telephone: +27 (0)11 974 1902Fax: +27 (0)11 974 1900