TRM-J & TRMC-J Highly Flexible Mining Rubber Cable

TRM‑J Cable: Standard flexible mining cable for medium‑heavy duty

  • Voltage0.69/1.15 kV
  • ConductorFlexible tinned Cu, Class 5
  • InsulationEPR (ethylene propylene rubber)
  • Outer sheath (TRMC‑J)Heavy-duty Polychloroprene (CR)
  • Max. conductor temperature90°C
  • Size range (TRM‑J)1 – 240 mm²
  • Overall diameter (TRM‑J)17.3 – 77.7 mm
  • Weight (TRM‑J)458 – 13727 kg/km
Product overview

TRM‑J Cable:

  • Standard flexible mining cable for medium‑heavy duty
  • Temp: −25°C to +80°C (mobile); −40°C to +80°C (fixed)
  • Voltage: 0.69/1.15 kV
  • Use: Mines, harbors, steel mills, quarries

TRMC‑J :

  • Heavy‑duty reinforced version for extreme mechanical stress
  • Better abrasion, oil, and tear resistance; higher tensile strength (20–25 N/mm² vs. 15–20 N/mm² for TRM‑J)
  • Use: High‑speed reeling, long‑distance trailing, heavy machinery (e.g., shearers, loaders) in harsh mine

Application & Features

TRMC-J & TRM-J Cable Chemical parameters :

  • Resistance to fire EN 60332-1-2,IEC 60332-1-2
  • Resistance to oil EN 60811-404,IEC 60811-404
  • Weather resistance
  • Unrestricted use outdoors and indoors, resistant to ozone, UV and moisture
  • Excellent flexibility
  • Ozone, heat, oil resistant and flame retardant
tebaoflex-cable-TRM-J-CABLE

Specifications

Working temperature of TRMC-J & TRM-J Cable:

  • Max. permissible temperature at conductor: 90°C
  • Max. short circuit temperature of the conductor: 250°C
  • Ambient temperature for fix installation min: 40C
  • Ambient temperature for fix installation max. 80 °C
  • Ambient temperature in fully flexible operation min.:-35 °C
  • Ambient temperature in fully flexible operation max.: 60 °C

TRMC-J Cable Technique Data

Cores*Size (mm2) Approx. Cable OD(mm) Approx.Cable Weight(kg/km) Maximum Conductor Resistance at 20℃(Ω/km)
TRMC- J 4Cx95mm2 60 7156.5 0.21

TRMC-J Cable Order Information

Cores*Size (mm2) Quantity Length/Drum (m) Drum Size (LWH)mm Drum Quantity Total Approx.Gross Weight(kg)
TRMC-J 4Cx95mm2 1500 500 2.2 1.2 2.2 3 11379

TRM-J Rubber Cable Technical Parameter Data

Size Stranding power Nominal thickness of insulation Nominal thickness of inner sheath Nominal thickness of outer sheath Approximate overall diameter of cable Approximate weight of cable
N x mm2 mm mm mm mm kg/km
trm-j 4×2.5 45×0.25 0.9 1.2 2 17.3 458
trm-j 4×4 51×0.3 1 1.2 2 18.9 557
trm-j 4×6 76×0.3 1 1.2 2 20.7 738
trm-j 4×10 74×0.4 1.2 1.4 2.2 24.3 1065
trm-j 4×16 116×0.4 1.2 1.6 2.5 27.9 1483
trm-j 4×25 180×0.4 1.4 1.8 3 33.2 2130
trm-j 4×35 254×0.4 1.4 1.8 3 35.5 2607
trm-j 4×50 364×0.4 1.6 2 3.5 42.6 3536
trm-j 4×70 514×0.4 1.6 2 3.5 46.8 4799
trm-j 4×95 684×0.4 1.8 2.4 4 55.5 6322
trm-j 4×240 1752×0.4 2.4 3.2 5 77.7 13727
trm-j 7×2.5 45×0.25 0.9 1.2 2 21.1 696
trm-j 7×4 51×0.3 1 1.4 2.2 24.6 952
trm-j 7×6 76×0.3 1 1.4 2.2 26.1 1438
trm-j 12×4 51×0.3 1 1.6 2 27 1100
trm-j 16×1 29×0.2 0.8 1.2 3 24 800
trm-j 19×4 51×0.3 1 1.6 2.5 33.2 1776

Construction

TRMC‑J Rubber Cable Construction

  • 1. Conductor: very finely stranded copper conductor,class 5
  • 2. Insulation: Basic material: EPR, Compound type: 3Gl3
  • Core identification: Main cores: Colored, Black, Blue, Brown; Earth cores: Yellow and Green
  • 3. Cores Screen: three individually tinned copper wire braiding with Nylon wires screened power cores Core arrangement ,earth core no screen
  • 4.Filler: Three main conductors and one earth core laid-up with Rubber Filler
  • 5.Inner sheath: Basic material: EPR, Compound type: GM1B
  • 6.Overall Screen: Braid of tinned copper wires of up to 90%
  • 7. Outer sheath: Yellow,heavy-duty Polychloroprene (CR)

Design: Highly flexible mining, individual and overall screened, multi conductor rubber cables.

Application: TRMc-J refers to a highly flexible, rubber-insulated trailing cable used in mining and extreme industrial environments, it is manufactured to operate continuously under heavy mechanical stress, movement, and harsh conditions

TRM‑J Rubber Cable Construction

  • 1. Conductor: very finely stranded copper conductor, class 5
  • 2. Insulation: Basic material: EPR, Compound type: 3Gl3
  • Core identification: Main cores: Colored, Black, Blue, Brown; Earth cores: Yellow and Green
  • 3.Filler: Three main conductors and one earth core laid-up with Rubber Filler
  • 4.Inner sheath: Basic material: EPR, Compound type: GM1B
  • 5.Overall Screen: Braid of tinned copper wires of up to 90%
  • 6. Outer sheath: Yellow,heavy-duty Polychloroprene (CR)

Design: Highly flexible mining, multi-conductor rubber cable immune to severe condition mines and other demanding environments.

Applicaton: designed for extreme industrial applications requiring exceptional durability, flexibility, and resistance to harsh environmental conditions.For very heavy stresses as required for mines, Shaftsinking, Harbors, Steelmills, Quarries and Oil rigs.

More Details

What's difference and Same of TRM-J cable and TRMC-J cable?

  • TRM-J Rubber Mining Cable: Power cores laid up around rubber filler if needed. The wrap of synthetic tape for seven and more conductor cables, inner sheath, concentric screen, CR outer sheath.
  • TRMC-J Rubber Mining Cable: Three screened power cores and one non screened earth cores laid up around rubber filler if needed. The wrap of synthetic tape for seven and more conductor cables, inner sheath, concentric screen, CR outer sheath
  • TRM‑J and TRMC‑J is the letter C: TRMC‑J has an extra reinforced/armored layer (chloroprene rubber sheath or steel braid) for heavier mechanical stress, while TRM‑J is the standard flexible mining trailing cable without this extra reinforcement.
Item TRM‑J TRMC‑J
Conductor Flexible tinned Cu, Class 5 Same
Insulation EPR (ethylene propylene rubber) Same
Inner Sheath EPR (EI 4) Same
Shield Tinned copper braid (≥90% coverage) Same
Outer Sheath Standard 5GM3 rubber (yellow) CR/Neoprene or PUR; thicker, abrasion/oil resistant
Reinforcement No extra armor Optional steel braid or aramid yarn core for high tension

What's Letter mean of TRM-J and TRMC-J Cable?

  • T: Trailing (for mobile equipment)
  • R: Rubber insulated
  • M: Mining application
  • J: Reinforced type / VDE standard compliant
  • C: Chloroprene rubber (CR) sheath or steel braid armor; heavy‑duty mechanical protection

TEBAOFLEX CABLE GROUP Customer's cable order sample

Tebaoflex Cable Group specializes in customizing premium have-duty rubber cables that fully comply with top global industrial manufacturing standards

✔ Industrial-Grade Reinforced Durability – Built with braided reinforcing layer and thickened heavy rubber sheath, resisting heavy mechanical extrusion, sharp friction, tensile damage and industrial slag erosion, perfectly fit mining equipment, port cranes.

✔ Full International Safety Certified – Strictly compliant with IEC, VDE and EU unified industrial cable norms, passed full electrical safety, flame retardant and environmental protection tests, zero leakage risk, safe for industrial power transmission and signal synchronous operation.

✔ All mining cable products support factory direct supply, third-party inspection and OEM bulk order service for global industrial clients.

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Quality Assurance

Testing at every stage in our own workshop and laboratory, from incoming copper to the packed drum.

Bare copper wire bobbins inspected before stranding at the TEBAOFLEX factory

Raw Material Inspection

Every batch of copper rod, rubber compound and reinforcing material is checked before it reaches the line.

  • Copper: conductor resistance, elongation and surface condition on incoming rod and drawn wire
  • EPR, CPE, PUR and silicone compounds: hardness, tensile strength, elongation and ageing samples from each mix
  • Suppliers and batch numbers are recorded so every drum can be traced back to its materials
Operator monitoring an extrusion line control panel in the TEBAOFLEX workshop

Manufacturing Process Control

Stranding, insulation extrusion, core assembly and sheathing run under recorded process parameters.

  • Class 5/6 stranding with lay length and tension monitored for trailing and reeling flexibility
  • Continuous-vulcanisation extrusion with wall thickness and spark tests logged on every length
  • Operators sign off each stage before the cable moves to the next machine
3.5 kV voltage withstand test station in the TEBAOFLEX laboratory

Electrical Testing

Finished lengths go through the routine tests required by the referenced VDE, ICEA, IEC or NEK standard.

  • Conductor resistance and insulation resistance on every length
  • Voltage withstand (3.5 kV and higher) and partial-discharge measurement in the shielded HV laboratory
  • Screen and pilot-core continuity checks for mining and reeling constructions
Tensile testing machine for conductor and sheath samples

Mechanical and Ageing Tests

Samples from production are tested for the duty a mining, crane or submersible cable will actually see.

  • Tensile strength and elongation of insulation and sheath before and after ageing
  • Hot-set, ozone, oil-immersion and low-temperature bending tests
  • Constant-temperature water bath for insulation resistance of submersible constructions
Single-cable vertical flame test chamber

Flame Test and Final Inspection

Before packing, the cable is checked against the order and the flame-performance requirement of its standard.

  • Single-cable vertical flame test to IEC 60332-1-2 where specified
  • Metre marking, printing, drum length and appearance inspection
  • Test report and packing list issued with every shipment

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