CORDAFLEX (SMK) and (SMK)-V drum reeling cables. Type (N)SHTOEU. 0.6/1 kV, rubber PCP sheath, 30 N/mm² tensile, 240 m/min. (SMK)-V adds aramid support for vertical/spreader applications. VDE GOST-R.
The CORDAFLEX (SMK) is the highest-performance rubber crane drum reeling cable in its voltage class — designed for fast-moving gantry cranes, container terminals, and port equipment where travel speed and tensile load set the design constraints. Travel speeds up to 240 m/min with sustained tensile loads of 30 N/mm² are achieved through the combination of Class FS very finely stranded copper conductors, PROTOLON EPR insulation, and an anti-torsion polyester braid vulcanized between the inner and outer PROTOFIRM PCP sheaths.
The (SMK)-V variant adds a central aramid support element for vertical reeling applications — typically spreader frame hoists on container cranes — where the cable must support its own weight over the full hoist height.
| Parameter | (SMK) Standard | (SMK)-V Vertical |
|---|---|---|
| Rated Voltage | 0.6/1 kV | 0.6/1 kV |
| AC Test Voltage | 3.5 kV | 3.5 kV |
| Max Conductor Temp | 90 °C | 90 °C |
| Max Tensile Load | 30 N/mm² | 30 N/mm² + aramid |
| Torsional Stress | ±50°/m | ±50°/m |
| S-Type Bend Distance | 20 × OD | 20 × OD |
| Travel Speed | 240 m/min | 240 m/min vertical |
| Flex Temp | −35 °C (+80 °C) | −35 °C (+80 °C) |
| Approvals | VDE 7519; GOST-R | GOST-R |
| Sheath Colour | Yellow | Yellow |
| Type | Cores | Cross-Section Range |
|---|---|---|
| Power (3-core + earth) | 3+E | 2.5 – 300 mm² |
| Power (4-core) | 4G | 2.5 – 50 mm² |
| Power (5-core) | 5G | 2.5 – 16 mm² |
| Control | 7 – 56 cores | 1.5 – 2.5 mm² |
| With Bus Cable | Power + 1 or 2 pairs | Custom |
| With Fibre Optic | Power + FO | Custom |
| Reduced Earth (3×/3) | 3+3×/3 | 35 – 300 mm² |
240 m/min travel speed — 33% faster than PUR halogen-free types and twice the speed of basic rubber cables — makes CORDAFLEX the only choice for high-speed container crane applications.
The highest sustained tensile load in the LV rubber reeling class, enabling use on long cable runs (>150 m deployed) without conductor or sheath fatigue.
Dual approval covers European and export market requirements without separate product variants.
Any bus protocol — Profibus, Profinet, CAN-Bus, ASI, or Industrial Ethernet — can be integrated in a single combined cable without compromising the anti-torsion or mechanical performance ratings.
