A Steel Cord Conveyor Belt uses longitudinal steel cords embedded in rubber as the primary tension-bearing reinforcement. The steel cords run continuously along the belt and are bonded with core rubber to form a high-strength carcass.

This construction is commonly selected for conveyors where belt tension, conveying distance and material capacity are significant factors.

The correct specification should be determined by considering belt width, conveyor length, material capacity, belt speed, maximum belt tension, pulley diameter, material characteristics and operating temperature.

High Tensile Strength — Suitable for conveyor systems operating under high belt tension.

Low Elongation — Steel cord reinforcement helps maintain stable belt movement under operating tension.

Long-Distance Conveying — Suitable for long conveyor routes requiring controlled elongation.

Application-Specific Covers — Cover rubber can be selected according to abrasion, temperature, oil, fire and other operating conditions.

The belt consists mainly of a top cover, steel cord carcass, core rubber and bottom cover.

Steel Cord Carcass

Longitudinal steel cords carry the main tensile load. Cord diameter, spacing and arrangement depend on the selected strength grade.

Core Rubber

Core rubber surrounds the steel cords and helps maintain adhesion between the reinforcement and rubber layers.

Top and Bottom Covers

The rubber covers protect the carcass from abrasion, impact and environmental conditions. Cover thickness and rubber compound should be selected according to the conveying material and operating environment.

Belt width and steel cord quantity should be considered together when selecting the belt construction.

A wider belt generally requires an appropriate steel cord arrangement to distribute longitudinal tension across the belt. The required cord quantity depends on belt width, ST grade, cord diameter and construction.

For accurate selection, provide the required belt width and ST grade when requesting a quotation.

ST indicates the nominal longitudinal tensile strength of the belt in N/mm. A higher ST grade is not automatically the best choice.

The selection should begin with the maximum operating belt tension and then consider the complete conveyor system.

The final specification should consider ST grade, belt width, steel cord construction, cover properties and pulley arrangement together.

Cover selection should be based on the actual conveying material and operating conditions.

Mining

For ore, coal and other bulk minerals where high tension and abrasion resistance are important.

Cement

For limestone, clinker and other heavy bulk materials.

Ports

For long-distance and high-capacity bulk material conveying systems.

Power Plants

For continuous transportation of bulk fuels and raw materials.

Steel Plants

For heavy-duty material handling under demanding operating conditions.

Quarries and Aggregates

For abrasive crushed materials where belt strength and cover durability are important.

Pulley diameter should be compatible with the selected belt construction.

Repeated bending around pulleys that are too small can increase bending stress and affect belt performance and service life. Pulley dimensions should therefore be checked together with belt strength, cord construction and splice requirements.

Hot vulcanized splicing is commonly used for joining steel cord belts. The splice must transfer belt tension through the joint while maintaining the required belt geometry.

Splicing requirements depend on:

Belt strength

Belt width

Steel cord arrangement

Cord diameter

Splice configuration

Installation conditions

The splice design should be determined according to the actual belt construction.

Dahan can provide specifications according to project requirements, including:

Belt width

Belt length

ST strength grade

Steel cord construction

Cover thickness

Rubber properties

Operating temperature requirements

Splicing requirements

For replacement applications, provide the existing belt marking, technical specification and conveyor parameters whenever available.

For replacement projects, the existing belt specification can help determine a compatible construction.

Useful information includes:

Existing belt width

ST grade

Belt length

Cover thickness

Material conveyed

Belt speed

Pulley diameter

Existing splice requirements

Providing the existing belt information can reduce specification errors during replacement.

1. Belt width

2. Belt length

3. Conveyor center distance

4. Material being conveyed

5. Material capacity

6. Belt speed

7. Conveyor inclination

8. Maximum belt tension

9. Pulley diameter

10. Operating temperature

11. Required cover properties

12. Required ST grade or existing belt specification

If the ST grade is unknown, the available conveyor parameters can be submitted for preliminary specification evaluation.