Trailing Cable - BMI Cables

✓ ISO 9001:2015 Certified

Trailing Cable for Steel, Power, Cement & Heavy Industry

EPR · PCP/CSP · HOFR · FRLSH — Screened & unscreened trailing cables from 1.1 kV to 11 kV, engineered for the application, not just the electrical rating.

Our Cable Range

Direct from Our Factory to Your Project Site.

From Drag Chain to Reeling CRD, every cable in this range rolls out of our own factory in Bhiwadi, Rajasthan. Six specialized types. One direct manufacturer. No trader, no middleman.

Trailing Cable — Mining, Steel & Heavy Industry

Elastomeric trailing cables are engineered for mobile and semi-mobile equipment that is continuously dragged, reeled, and subjected to mechanical stress in harsh environments. Six application-specific constructions, each with compound, torsional architecture, and screening matched to the exact environment.

Applications – Underground Mining (FTD Drill · FT-7 LHD/SDL/UDM) · Steel SMS · EAF · EOT Crane

Insulation – EPR · Sheath: PCP / CSP / HOFR / FRLSH

Voltage – 1.1 kV to 11 kV — screened & unscreened

Conductor – Single core up to 630 sq mm · Multi-core up to 300 sq mm

Standard – IS 9968 / IS 14494

Drag Chain Cable

Drag chain cables run inside a cable carrier or energy chain system a guided plastic or steel chain that moves with the machine. The cable must survive millions of tight-radius bending cycles inside the chain. Class 5/6 fine stranding and a sheath compound evaluated for chain contact abrasion are non-negotiable for this application.

Class 5 / Class 6 fine-stranded conductors engineered for millions of bending cycles
Minimum bending radius matched to your specific chain system (Igus, Brevetti, or custom)
Rubber / PCP outer sheath evaluated for drag chain contact and compression
Round construction fits inside standard cable chain link profiles
Single core, multi-core, and composite (power + control + earth) constructions available
Used on EOT cranes, gantry cranes, stacker reclaimers, transfer cars, automated material handling

Festoon Cable

Festoon cables hang in catenary loops from trolleys running along an I-beam or C-rail. The loops form and release as the crane travels. The cable must handle repeated S-bending, its own loop weight, and lateral swing loads. Flat cable construction is preferred for festoon systems, which prevents loop twist and simplifies trolley clamping.

Flat construction lies naturally in festoon trolley clamps, eliminates loop twist
Round construction also available for longer travel distances and higher current ratings
UV and weather resistant rubber sheath festoon systems are frequently exposed outdoors on crane runways
EPR insulation for reliable performance in hot, cold, and chemically exposed crane environments
Power only or composite (power + control + earth) in one cable fewer cable runs per crane
Used on EOT cranes, port gantry cranes, hi-mast tower lighting, conveyor systems

Rubber / EPR Cable

General category covering all elastomeric insulated cables manufactured by BMI — including trailing cables, drag chain cables, festoon cables, and reeling cables. EPR (Ethylene Propylene Rubber) insulation gives superior flexibility, heat resistance, and electrical properties in wet and chemically aggressive environments compared to PVC alternatives.

Insulation – EPR (Ethylene Propylene Rubber)

Sheath – Rubber · PCP · CSP · HOFR · FRLSH — per application

Voltage – Up to 11 kV LT/MV

Advantage over PVC – Better flexibility at low temperature · Higher heat resistance · Superior oil and chemical resistance

Standard –IS 9968 / IS 14494

Composite Cable

A single cable combining power cores, control/signal cores, and earth conductors in one integrated jacket eliminating multiple cable runs on the same equipment. Specified for stacker reclaimers, complex crane OEM machines, tunnel boring equipment, and any installation where cable routing space is limited or multiple cable runs are impractical.

Construction – Power cores (EPR) + control cores + earth — all in one jacket

Sheath – HOFR / PCP / CSP / FRLSH per application environment

Voltage – Power cores 1.1 kV to 11 kV · Control cores to applicable standard

Custom config – Non-standard core counts · Screened/unscreened control cores · OEM BOM matching

Applications – Stacker Reclaimer · Port Crane OEM · Mining Machine · Conveyor

CRD Cable

Reeling cables (also called CRD cables — Cable Reel Drum cables) are designed for cable reel drum systems where the cable is wound and unwound on a drum as the machine travels. Unlike drag chain or festoon systems, reeling cables must withstand the compressive and tensile stress of drum winding in addition to flex fatigue — requiring a specifically engineered lay angle and robust outer sheath.

Key differenceEngineered for drum winding compressive + tensile stress — not just flex fatigue

Insulation – EPR · Sheath: Rubber / PCP / CSP / HOFR

Voltage – 1.1 kV to 11 kV

Applications – Mining continuous miners · Stacker reclaimers · Mobile cranes · Cable reel drum systems

Drum lengths – 100m · 250m · 500m · 1000m or custom

Critical Engineering Mistakes

6 Specification Mistakes That Cause Trailing Cable Failures

Procurement teams and plant engineers frequently face premature cable failures almost always due to specification errors, not manufacturing defects. Here is how BMI prevents these mistakes before dispatch.

Specifying by Electrical Rating Alone

Selecting a trailing cable only by voltage rating and conductor cross-section, ignoring jacket compound, torsional architecture, and thermal response. A cable rated identically on paper can fail in weeks or last years depending on these factors.

Using Standard HOFR Cable in SMS / Furnace Zones

Standard HOFR cables are rated for sustained ambient temperature. Inside a steel SMS or furnace bay, the dominant threat is intense directional radiant heat from molten metal a completely different failure mode that standard compounds cannot survive.

Ignoring Torsional Duty Cycle Differences

Assuming that a cable which works on a standard EOT crane will perform equally on a steel ladle crane or EAF electrode drive. These applications have completely different torsional loading patterns irregular reversals, high-frequency cycles, or matched lay angle requirements.

Patching or Splicing Damaged Trailing Cables

Under production pressure, site teams splice damaged high-voltage trailing cables to keep the shift running. This compromises the insulation system and moisture barrier in wet mine environments or SMS facilities, this significantly increases arc flash and ground fault risk.

Standardising One Cable Spec Across the Entire Plant

Attempting to use a single trailing cable specification for all applications in a facility from maintenance EOT cranes to SMS ladle cranes. A cable optimised for one will be over-specified or critically under-engineered for the other.

Sizing FT-7 Cable by Electrical Requirement Alone Ignoring Mechanical Load on LHD & SDL Machines

Electrical sizing alone may suggest a 16 sq mm conductor is adequate, but underground LHD and SDL trailing cables face severe mechanical stress. Without additional mechanical strength, conductors can fatigue, break, or fail long before reaching their electrical limits.

Don’t make these mistakes on your next project. Our trailing cable specialists will help you specify the exact right construction compound, torsional design, screening, and compliance before you order.

Key Highlights

of BMI Trailing Cables

1.1 kV – 11 kV

LT to MV voltage range both screened and unscreened constructions available

IS 9968 / IS 14494

FTD3 drill trailing and FT-7 LHD/SDL/UDM machine cable types

Steel & Metals Manufacturing

Single core up to 630 sq mm · Multi-core up to 300 sq mm

EPR / PCP

EPR insulation · PCP/CSP · HOFR · FRLSH sheath options compound selected per application

Pan-India

Approved vendor across 24+ states factory-direct supply from Bhiwadi, Rajasthan

ISO 9001

Certified manufacturing — MTC and third-party inspection support on every batch

6 Types

FTD Drill · FT-7 LHD/SDL/UDM · SMS Ladle · EAF Electrode · EOT Crane · Composite/Hybrid

FAQs on Trailing Cables

Frequently Asked Questions

What is EPR trailing cable and where is it used?

EPR (Ethylene Propylene Rubber) trailing cable uses EPR as the core insulation material, giving it excellent flexibility, heat resistance, and electrical properties — even in wet and chemically aggressive environments. EPR insulated trailing cables are used in underground mines (coal and metal), steel plants, EAF furnace zones, LHD/SDL machines, EOT cranes, and port equipment. The outer sheath is typically PCP, CSP, HOFR, or FRLSH depending on the specific application environment and flame retardance requirement.

Which trailing cable is used in steel plant ladle crane and SMS?

Steel plant SMS and ladle crane trailing cables require a specialised HOFR compound with radiant heat and molten metal splatter resistance standard trailing cables are not suitable. The cable must also have heavy anti-torsion braiding for irregular ladle crane duty cycles, separator tapes between cores to prevent corkscrewing, and high-density electrolytic copper stranding with optimised lay angle. BMI manufactures trailing cables specifically for SMS ladle cranes, continuous casting turret drives, and EAF electrode drives all with compound and construction matched to the high-heat, high-torsion demands of steelmaking environments. Clients include SAIL, JSPL, JSW, JSL, and RINL VSP.

What is HOFR trailing cable — and when do I need it instead of standard rubber cable?

HOFR stands for Heat, Oil, and Flame Retardant — a compound specification for the outer jacket of elastomeric cables. HOFR trailing cables are required in environments where there is exposure to oils, hydraulic fluids, elevated temperature, and flame risk simultaneously. For standard mining or EOT crane applications, PCP/CSP sheathed cables may be sufficient. HOFR is specifically needed in steel plant environments (ladle cranes, SMS, casting bays) and furnace/EAF zones where the combination of oil, heat, and flame exposure exceeds what a standard rubber jacket can handle. BMI supplies HOFR, PCP, CSP, and FRLSH sheath options — selection depends on your specific application environment.

Who is the best trailing cable manufacturer in India for mining applications?

BMI Cables is one of India’s leading trailing cable manufacturers for underground mining applications, supplying to Coal India subsidiaries including WCL, MCL, SCCL, SECL, and ECL across 24+ states. We manufacture FTD3 drill trailing cables and FT-7 LHD/SDL/UDM machine cables as per IS 14494. Our manufacturing facility is in Bhiwadi, Rajasthan, with a sales office in New Delhi.

What is the difference between FTD3 and FT-7 trailing cable?

FTD3 (Flexible Trailing Drill) cables are designed for drill jumbos and continuous miners — engineered for the specific mechanical stress of drilling operations including sharp bending at drill rotation points and exposure to drilling fluids. FT-7 cables are designed for LHD (Load Haul Dumper), SDL (Side Discharge Loader), and UDM (Underground Dump Machine) equipment — built to resist vehicular overrun contact, handle tight-radius turns in narrow mine headings, and carry power plus earth conductors per IS 14494 requirements. Both types conform to IS 14494 but have different internal constructions suited to their specific duty cycles. Importantly, FT-7 conductor sizing must account for mechanical loading in addition to electrical current see our specification guidance section above.

Do you supply trailing cables to Coal India companies like WCL, MCL, SCCL?

Yes. BMI Cables is an established supplier to multiple Coal India subsidiaries including Western Coalfields Limited (WCL), Mahanadi Coalfields Limited (MCL), Singareni Collieries Company Limited (SCCL), South Eastern Coalfields Limited (SECL), and Eastern Coalfields Limited (ECL). We manufacture FTD drill trailing cables and FT-7 LHD/SDL/UDM machine cables as per IS 14494 / IEC 60092 with full test documentation on every batch. To become a registered vendor or place an order, contact us at +91 92570 35793 or fill in the quote form above.