E-mail: sales@tebaoflexcablegroup.com Whatsapp: +86 15639927303
Heavy-Duty TRMC-J Mining Cable
Overview: The TEBAOFLEX TRMC-J mining cable is a highly flexible, rubber-insulated trailing cable specifically engineered for underground mining and extreme industrial environments. Designed to operate continuously under heavy mechanical stress, it provides unparalleled torsional resistance and safety for mobile equipment like drilling rigs and stackers.
Key Specifications:
- Voltage & Application: Low to medium voltage heavy-duty power supply for continuous movement.
- Ultimate Durability: Heavy-duty Yellow Polychloroprene (CR) outer sheath resisting oil, heat, ozone, and flame.
- Double Screen Design: Individually tinned copper/nylon screened power cores PLUS up to 90% overall tinned copper braid screen.
- Temperature Range: -35°C to +60°C (fully flexible operation); Max conductor temp 90°C.
- Certifications: Manufactured by TEBAOFLEX with ISO, CE, and Mining Safety Mark (MA) compliance.
Premium TRMC-J Mining Cable for Heavy-Duty Mobile Equipment
Operating heavy machinery in underground mines or expansive open-pit environments requires a power lifeline that can withstand constant abuse. Standard cables quickly snap or degrade under such conditions. The TEBAOFLEX TRMC-J mining cable is a highly flexible, rubber-insulated trailing cable built to thrive in extreme industrial settings. Engineered for continuous movement, heavy mechanical stress, and severe abrasion, this cable ensures your critical operations never face unexpected downtime.
Why is the TRMC-J Cable Essential for Mining?
As a leading source factory certified with the Mining Safety Mark (MA), TEBAOFLEX designs the TRMC-J mining cable to power mobile equipment such as continuous mining machines, large drilling rigs, stackers, and underground cutting machines. Because these machines are constantly moving, reeling, and turning, the cable is engineered with exceptional flexibility and extreme torsional resistance to prevent core snapping.
Furthermore, safety is paramount in hazardous mining areas. The vibrant yellow outer jacket ensures high visibility in dark tunnels, preventing accidental run-overs by heavy vehicles. For more context on how these cables power massive excavation machinery, you can review the mechanics of continuous miners.
Advanced 7-Layer Double Screened Construction
To guarantee maximum physical endurance and electromagnetic compatibility, the TRMC-J cable utilizes an incredibly robust 7-layer architecture:
- Conductor: Very finely stranded flexible copper conductor, built for continuous flexing.
- Insulation: Premium Ethylene Propylene Rubber (EPR), Compound type 3G13. Core colors: Black, Blue, Brown (Power), and Yellow/Green (Earth).
- Individual Core Screen: The three power cores feature individual tinned copper wire braiding mixed with Nylon wires for localized stress relief and shielding (Earth core has no screen).
- Core Arrangement: Three main power conductors and one earth core are securely laid-up around a central rubber filler to maintain a perfectly round shape.
- Inner Sheath: Extruded EPR rubber compound (Type GM1B) providing an internal protective buffer.
- Overall Screen: A heavy-duty braid of tinned copper wires covering up to 90% of the inner sheath, offering superior EMI protection and mechanical grounding.
- Outer Sheath: High-visibility Yellow, heavy-duty Polychloroprene (CR) compound. It is highly resistant to tearing, oil, flame, and ozone.
Technical Data & Environmental Resistance
Every meter of our TRMC-J mining cable is rigorously tested in the TEBAOFLEX laboratory to meet strict international standards (IEC, EN). Please review the operational limits below:
| Max. Conductor Temperature | +90°C |
| Max. Short Circuit Temperature | +250°C |
| Ambient Temp. (Fixed Installation) | -40°C to +80°C |
| Ambient Temp. (Fully Flexible) | -35°C to +60°C |
| Fire Resistance | Flame retardant acc. to EN 60332-1-2, IEC 60332-1-2 |
| Oil & Chemical Resistance | Oil resistant acc. to EN 60811-404, IEC 60811-404 |
| Weather Resistance | Ozone, UV, and moisture resistant; Unrestricted outdoors & indoors |
Dimensional Specifications: 4x95mm² Example
TEBAOFLEX manufactures the TRMC-J mining cable in various configurations. As an example of our heavy-duty manufacturing capabilities, here are the precise parameters for our 4Cx95mm² dimension, specifically designed for high-power demands:
| Cores x Size (mm²) | Approx. Cable Outer Diameter (mm) | Approx. Cable Weight (kg/km) | Max. Conductor Resistance at 20°C (Ω/km) |
|---|---|---|---|
| 4C x 95 mm² | 60.0 mm | 7,156.50 kg/km | 0.210 Ω/km |
* Packaging Note: Due to the massive weight of these heavy-duty cables (e.g., a 500m drum of 4x95mm² weighs over 3.7 tons), we utilize reinforced wooden and steel drums measuring 2.2m x 1.2m x 2.2m, optimized for 20GP container shipping.
Frequently Asked Questions (FAQ)
1. Why does the TRMC-J cable use both individual core screens and an overall screen?
This “double screen” design serves two critical functions. The individual tinned copper/nylon braid relieves torsional stress on each power core when the cable twists. The overall 90% tinned copper braid provides exceptional electromagnetic shielding and an added layer of earth protection if the outer sheath is punctured by falling rocks.
2. Is the Yellow CR outer sheath mandatory?
Yes, for underground and open-pit trailing applications, Polychloroprene (CR) is essential due to its superior resistance to lubricating oils, tearing, and flames. The bright yellow color is an industry standard to ensure high visibility in muddy or dark environments, preventing accidental damage from heavy machinery.
3. Can TEBAOFLEX provide custom lengths and smaller cross-sections?
Absolutely. As a direct manufacturing factory equipped with state-of-the-art stranding and extrusion lines, we can produce TRMC-J cables in various sizes to suit your specific equipment. To request a tailored quotation or technical consultation, please contact our mining cable specialists today.
