ST1800 Steel Cord Conveyor Belt

CBC India's ST1800 steel cord conveyor belt is specified for overland conveying infrastructure at a scale where engineering margins, system economics, and material volumes converge on a single requirement — maximum tensile capacity with minimum structural mass. Per DIN 22131 and ISO 283, the "1800" designation guarantees a minimum breaking strength of 1,800 Newtons per millimeter of belt width, positioning this belt as the correct specification for bauxite overland systems, gold mine stockpile circuits, limestone mega-crusher installations, and high-volume bulk terminals where the ST1600 grade no longer provides adequate safety factors at rated operating tension.

Construction

The ST1800's tensile core is built on galvanized steel cords in 7×19 strand configuration, with individual cord diameters of 5.5–5.6 mm at a 13.5 mm pitch — accommodating up to 90 cords across a 1,600 mm belt width. Each cord delivers a minimum breaking force of approximately 23 kN, with enhanced rubber penetration during vulcanization achieving complete wire-level encapsulation that eliminates internal voids and arrests the corrosion fatigue mechanisms that dominate cord failure at this tensile class under sustained cyclic loading. Total belt thickness runs 35–40 mm with a reference mass of approximately 32 kg/m². Standard cover configurations include 8 mm top and 4 mm bottom for asymmetric duty profiles, with belt widths extending to 3,200 mm and roll lengths exceeding 800 m per section. Minimum pulley diameters are specified at 800 mm, with horizontal reinforcement options available per DIN 22102 for rip-prone quarry and underground applications.

Top cover compounds are specified to DIN Grade Z as standard, with heat-resistant formulations rated to 280°C and flame-retardant variants compliant with ISO 284 and EN 16974 for underground coal and hard-rock mining installations.

Performance

Working elongation ranges from 0.1–0.3% at rated tension, providing the pinpoint belt alignment and tension stability that single-flight hauls exceeding 6 km demand. Operating tensions surpass 1,500 PIW at conveying speeds up to 8.5 m/s. Superior troughability delivers volumetric capacity gains exceeding 60% over stiffer constructions, while the optimised cord geometry reduces drive power consumption by 35% against fabric ply alternatives at comparable throughput. Weft breaker fabrics within the cover structure extend impact tolerance to 550 mm lump material without cord displacement or longitudinal rip initiation.

Installation and Maintenance

Two-step hot-vulcanized splices with a 1,150 mm splice length per DIN 22131 Part 3 restore full cord efficiency at every joint. In-service monitoring integrates electromagnetic induction scanning, ultrasonic cord assessment, and AI-assisted camera systems for continuous non-destructive surveillance. Real-time analytics platforms fed by impact breaker sensors and take-up monitoring eliminate unplanned stoppages before they develop. ST1800 belts achieve a documented service life of 15–35 years across the world's most ambitious bulk material handling installations.

Technical specification of ST1800 Conveyor Belt

Standard Steel Cord Conveyor belt Range As per DIN 22131

Available Stocks of ST1800 conveyor belt