RKL4453 Bosch Rexroth Indramat
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The RKL4453 cable is manufactured by Bosch Rexroth Indramat as part of the RKL Motor Power Cables series. It features 4x6.0 mm² power conductors and 2x1.0 mm² plus 2x1.5 mm² control conductors, with a nominal diameter of 18.5 mm. The cable has a PUR jacket in orange color, supports up to 5,000,000 bending cycles in a drag chain, and offers a wire temperature rating of 90°C fixed and 80°C flexible.
Internal Product Review
The RKL4453 from the RKL Motor Power Cables series by Bosch Rexroth Indramat is a robust power cable engineered for high-cycle drag chain applications, supporting up to 5,000,000 bending cycles and featuring a flexible PUR jacket. The cable incorporates 4x6.0 mm² power conductors and an orange RAL 2003 jacket for clear identification. Excellent mechanical durability and reliable conductor sizing make this cable a strong choice for dynamic motion environments.
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Product Description:
The RKL4453 motor power cable is supplied by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is intended for routing between drive controllers and synchronous or induction motors in industrial automation, especially along moving machine axes fitted with drag chains. By combining durable insulation with balanced conductor layout, the cable maintains stable voltage and signal integrity while accommodating continuous mechanical stress found in packaging lines, assembly robots, and material-handling modules.
Mechanical endurance is defined by a drag-chain rating of 5,000,000 bending cycles, so the cable can travel repeatedly without conductor fatigue. During installation, a minimum static bend of 5 x D is allowed, while dynamic motion requires a radius of 7.5 x D; these limits protect the copper strands and the insulation bond. The nominal outer diameter of 18.5 mm permits compact routing through channel ducts yet still leaves space for screening and fillers that suppress crosstalk. Electrical behaviour is shaped by distributed capacitance of 0.8 nF/m, a value low enough to minimise reactive current and maintain drive feedback accuracy over extended lengths.
DC losses are moderated by a conductor resistance of 3.30 Ohm/km, enabling efficient power delivery to servo windings. The main three-phase feed uses 4x6.0 mm² copper cores, while two 1.0 mm² and two 1.5 mm² auxiliary pairs carry control and brake signals needed by the drive. Continuous service temperatures reach 90 C in fixed routing and 80 °C in flexing sections, so thermal derating is rarely required inside machine enclosures. An outer sheath of PUR, finished in orange RAL 2003, resists oil, coolant splash, and weld spatter without sticking to adjacent cables or carrier links.
