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.
