RKL4775 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4775 is part of the RKL Motor Power Cables series, featuring a cable diameter of 25.5 mm and a PUR jacket that is adhesion-free and matt. The cable includes power wires with a 16.0 mm² cross-section rated at 300/500 V and control wires with a 1.5 mm² cross-section rated at 300/300 V. It is designed for up to 5,000,000 bending cycles.
Internal Product Review
The RKL4775 is a robust motor power cable from Bosch Rexroth Indramat's RKL series, featuring a 16.0 mm² power wire cross-section and a PUR jacket that is both adhesion-free and matt-finished. With a dynamic bending radius of 7.5 x D and a rated lifespan of 5,000,000 bending cycles, this cable is engineered for demanding motion applications. Reliable connectors and high flexibility highlight its suitability for continuous use in industrial environments.
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Product Description:
The RKL4775 is a flexible motor power cable manufactured by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It links drive controllers to servomotors, delivering main power conductors and auxiliary control cores in a single assembly so that industrial automation axes receive coordinated voltage and feedback without additional harnesses.
This cable has an outside diameter of 25.5 mm, establishing the conduit size and clamp spacing required in machine layouts. Its dynamic performance is defined by a bending radius of 7.5 x D, allowing frequent chain motion while preventing conductor fatigue; endurance is demonstrated by a lifecycle of 5,000,000 flex cycles. Power conductors use a cross-section of 16.0 mm², so the copper can carry phase currents consistent with a rating of 300/500 V (VDE) without excessive voltage drop. Typical mutual capacitance is 1.2 nF/m, a value that influences the drive’s switching frequency and the dissipation in output filters during rapid pulse-width modulation. The jacketing is PUR with a matt, adhesion-free surface, giving abrasion resistance and preventing cables from sticking together in bundled installations. A static bending radius of 5 x D is specified for fixed routing inside enclosures.
At the drive end the cable terminates in a RLK1201 angled power connector, while the motor side is fitted with an RLS0723/K16 plug to match Indramat motor housings. Integrated control cores are 4-wire, each with a cross-section of 1.5 mm², allowing brake release or thermal sensor circuits to share the same sheath under a voltage limit of 300/300 V. These conductors follow the same PUR insulation system, so their electrical isolation and mechanical durability remain consistent with the main phases during both static cabinet runs and dynamic cable-chain travel.
