RKL4552 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4552 is a power cable from the RKL Motor Power Cables series, designed for use in drag chains and flexible installations with a bending cycle rating of 5,000,000. It features a PUR cable jacket, 4 power conductors with 2.5 mm² cross-section, and a controller connector type RLS0721.
Internal Product Review
The RKL4552 from Bosch Rexroth Indramat is a robust RKL Motor Power Cable designed for dynamic motion applications and features a durable PUR jacket and support for up to 5,000,000 bending cycles. Its drag chain compatibility and 2.5 mm² power wire cross-section ensure reliable performance in demanding environments. This cable stands out for its flexibility and long operational lifespan.
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Product Description:
The RKL4552 is a motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It connects drive controllers to synchronous motors in automated machinery, transferring power and feedback signals while withstanding constant motion in dynamic handling or assembly stations.
The cable is rated for 5,000,000 bending cycles, indicating its service life when installed in continuously moving machine axes. A minimum fixed installation bend radius of 5 x D prevents conductor fatigue when the cable is clamped along static cabinet walls. The bulk conductor design follows the INK0602 profile, so the insulation thickness and conductor stranding are matched to Rexroth drive output parameters. Each control core has a cross-section of 1.0 mm², providing low-impedance signal return for temperature sensors and brake release lines. At the motor end, an AEH/RKS hybrid connector integrates power and control pins into a single molded plug, reducing wiring time and space. Four unshielded power conductors carry phase current to the stator, and a separate protective earth wire is embedded between them to meet safety grounding rules.
When routed through energy chains the cable may flex to a radius of 7.5 x D, a geometry that balances torsional strain with conductor spacing. A robust PUR outer jacket resists cutting oils and weld spatter common in robotic cells, while remaining compliant in cold start-ups. On the controller side, the keyed RLS0721 plug ensures correct phase order during maintenance swaps. Main power cores feature a cross-section of 2.5 mm², allowing the assembly to carry continuous motor currents typical of medium-frame servos without excessive voltage drop. The construction is approved for drag-chain use, so installers can place the cable in gliding trays without additional sleeves or separators.
