RKL4579 Bosch Rexroth Indramat

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The Bosch Rexroth Indramat RKL4579 is part of the RKL Motor Power Cables series and features a PUR orange jacket with an overall diameter of 25.5 mm. This cable supports drag chain use and has a motor-side terminal box connection, offering a power core cross-section of 16.0 mm² and a control core cross-section of 1.5 mm². The conductor resistance is rated at 1.21 ohms per kilometer at 20°C.

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Product Description:

Bosch Rexroth Indramat manufactures the RKL4579, a motor power cable in the RKL Motor Power Cables series. It links the drive controller to a servomotor terminal box, carrying three-phase power and auxiliary control signals so automated axes receive stable current and feedback. Within industrial automation this cable enables coordinated motion by combining power, control and braking conductors inside one mechanically robust, oil-resistant assembly.

Each power conductor presents a cross-section of 16.0 mm², limiting resistive losses to 1.21 Ω/km at 20 °C. The integrated control bundle is rated for up to 600 V AC, allowing sensor circuits to share the same run without separate conduit. A total outer diameter of 25.5 mm permits standard cable gland sizing, while a minimum dynamic bend radius of 7.5 x D supports tight routing through energy chains without conductor fatigue. At the motor end the cores terminate in a sealed terminal box, and the control section follows a 2 × (2 × 1.5 mm²) pairing so brake coils or thermal switches can be wired independently of the drive phases.

The signalling layer contains 4 individual control cores, each formed from copper strands with a cross-section of 1.5 mm² to provide low-impedance paths for encoder power or status lines. An outer jacket made of PUR resists coolants, abrasion and weld spatter, and its surface is finished in RAL 2003 (Orange) for clear identification in cable trays. The adhesion-free PUR compound and finely stranded conductors qualify the cable for drag chain use, allowing millions of bending cycles without jacket cracking or core breakage. These attributes deliver reliable signal integrity and power transmission across long service lives on high-cycle manufacturing equipment.

Conductor Resistance (power)
1.21 Ω/km (20°C)
Control Core Cross-section
1.5 mm²
Control Cores
4
Control Pair Configuration
2 x (2 x 1.5 mm²)
Drag Chain Use
Yes
Jacket Color
RAL 2003 (Orange)
Jacket Material
PUR (adhesion-free, matte)
Min Bend Radius (flexible)
7.5 x D
Motor-side Connection
Terminal Box
Operating Voltage (control, Ul)
600 V AC
Overall Diameter
25.5 mm
Power Core Cross-section
16.0 mm²

Frequently Asked Questions about RKL4579:

Q: Is the RKL4579 cable suitable for drag chain use in industrial environments?

A: The RKL4579 cable is designed for use in drag chain applications.

Q: What type of motor-side connection does the RKL4579 cable provide?

A: This cable features a motor-side connection via a terminal box.

Q: What is the conductor resistance of the power cores in the RKL4579 cable?

A: The conductor resistance for the power cores is 1.21 Ω/km at 20°C.

Q: What material is used for the outer jacket of the RKL4579 cable?

A: The outer jacket of the RKL4579 cable is made from PUR, which is adhesion-free and matte.

Q: What is the minimum bend radius for flexing the RKL4579 cable?

A: The RKL4579 cable has a minimum bend radius for flexible installation of 7.5 times its diameter.


Internal Product Review

  • ‘‘The RKL4579 is a robust motor power cable from the RKL Motor Power Cables series by Bosch Rexroth Indramat, designed with a 16.0 mm² power core cross-section and 1.21 Ω/km conductor resistance for efficient, low-loss power transmission. Its PUR jacket in RAL 2003 orange offers excellent durability for drag chain use and resists adhesion in demanding automation environments. This cable stands out for reliability and consistent performance in dynamic industrial applications.’’

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