General
Nominal voltage	0,6/1 kV
Test voltage	2500 V
Temperature range for fixed installation	-20 to +80 °C
Temperature range in motion	-40 to +80 °C
Maximum operating temperature	+90 °C
Maximum permissible static tensile load	20 N/mm²
Minimum bending radius for drum operation <21.5 mm	5 x outer diameter
Minimum bending radius drum operation >21.5 mm	6,25 x outer diameter
Minimum bending radius for roller deflection	7,5 x outer diameter
Flame retardancy	VDE 0482-332-1-2, IEC 60332-1
Conductor	tinned copper stranded wire, fine-stranded, class 5
Wire insulation	Rubber compound according to VDE 0207 T. 20
Conductor marking	made of rubber compound
Torsion protection insert	high-tensile plastic according to VDE 0293-308
Outer sheath	rubber compound
Sheath colour	Black

The rubber hose cable NSHTÖU-J 4 X 35.0 from böhm Kabel is a special cable specifically designed for dynamic operating conditions. It is particularly used in installations with frequent winding and unwinding, such as lifting equipment, transport and conveying systems, where the cable is simultaneously subjected to tensile stress and forced guidance. The cable is designed for high mechanical loads and is suitable for applications with drum speeds up to 120 m/min. It is intended for use in damp and wet rooms, outdoors, in explosive atmospheres, as well as in underground mining.

Applications

The cable is designed for applications requiring high flexibility and mechanical load capacity. It is used in industry, particularly in conveying technology, cranes and conveyor belts, where the cable is regularly wound and unwound. The construction allows use in harsh environments, including wet and damp rooms as well as outdoors. The cable is also suitable for use in explosive atmospheres, with specific approvals to be checked according to application and environment.

Functions and Equipment in Detail

The cable consists of tinned copper strands of class 5, finely stranded to ensure high flexibility and durability under frequent bending and winding. The conductors are insulated with a rubber compound according to VDE 0207 T. 20 and laid with short lay length, enabling even distribution of tensile forces and high mechanical stability. A torsion protection insert made of high-tensile plastic according to VDE 0293-308 provides additional protection against twisting. The inner and outer sheaths are also made of rubber compound, with the outer sheath being black. This construction ensures high mechanical strength and resistance to external influences.

Technology Explained Simply

The rated voltage is 0.6/1 kV, qualifying the cable for use in industrial networks with medium voltage. The test voltage of 2500 V ensures electrical insulation under high voltage stress. Temperature ranges are defined according to application: for fixed surface installation, the range is -20 °C to +80 °C; for moving installation, -40 °C to +80 °C. The maximum operating temperature is +90 °C, making the cable suitable for short-term thermal loads. The maximum permissible static tensile stress of the conductor is 20 N/mm², enabling high mechanical load capacity under static conditions. The minimum bending radius varies according to outer diameter: for cables under 21.5 mm, it is 5 times, and for over 21.5 mm, 6.25 times the outer diameter. For drum deflection, the minimum bending radius is 7.5 times the outer diameter. Flame retardancy according to VDE 0482-332-1-2 and IEC 60332-1 ensures limited flame spread in case of fire.

Compatibility and Accessories

The cable is suitable for use with standard connectors, cable lugs and other connection elements designed for rubber hose cables with a cross-section of 35.0 mm². The use of protective and/or neutral conductors is only permitted if they have the same cross-section as the phase conductors and are not split. Dynamic tensile stress must be determined individually according to application.

Installation and Mounting

Installation requires adherence to the prescribed minimum bending radii to ensure cable lifespan. In drum operation, care must be taken to avoid excessive tension to keep tensile stress within permissible limits. Installation is typically surface-mounted, with environmental conditions (temperature, humidity, mechanical load) to be considered. The cable is designed for harsh environments, so careful planning of installation and securing is recommended.

Advantages in Operation

The cable offers high mechanical strength and flexibility, crucial for dynamic applications. The rubber compound of the outer sheath ensures good resistance to moisture, oil and mechanical stress. The flame-retardant design increases operational safety. High tensile strength and the special construction with torsion protection insert extend cable lifespan under high loads. The suitability for use in explosive atmospheres and underground mining significantly expands the range of applications.