RKL4404 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4404 is part of the RKL Motor Power Cables series and features 4 power conductors each with a cross-section of 10.0 mm². This cable is jacketed in RAL 2003 orange PUR material and supports an operating voltage of 600 V AC. It is suitable for drag chain applications and includes two shielded control pairs measuring 1.0 mm² and 1.5 mm².
Internal Product Review
The RKL4404 is a robust motor power cable from the RKL series by Bosch Rexroth Indramat, featuring 4x10.0 mm² power conductors and shielded control pairs for reliable signal transmission. This cable is drag chain suitable and uses a durable PUR jacket in RAL 2003 orange, ensuring long-term flexibility and visibility in dynamic applications. Its construction and performance make it an excellent choice for demanding industrial environments.
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Product Description:
The RKL4404 is a motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is intended to link servo drives to synchronous motors in automated machinery, carrying three-phase supply power along with auxiliary sensor pairs through a single routed line. By combining power and control conductors in one jacket, the cable simplifies cabinet wiring, shortens installation time, and maintains signal integrity in continuously moving axes such as gantries and pick-and-place modules.
The four main copper cores have a cross-section of 4x10.0 mm², allowing the assembly to transmit up to 600 V AC without excessive heating. DC loop losses stay low because conductor resistance is limited to 1.91 Ω/km, a value that supports long-stroke applications. An overall outside diameter of 22.2 mm fits standard bulkhead glands while leaving room in energy chains for parallel services. For encoder or temperature feedback, a separately shielded pair of 2x1.0 mm² conductors is integrated, so a second cable is unnecessary. The cable construction is certified for drag-chain motion, meaning it can perform millions of cycles without jacket cracking or layer displacement.
The insulation system presents a mutual capacitance of 1.0 nF/m, which keeps drive-generated switching currents within EMC limits. During dynamic routing, the bundle may flex down to 7.5 × D without exceeding minimum mechanical strain, supporting tight loop radii common in compact robots. Visibility in plant trays is aided by the jacket’s high-contrast RAL 2003 (orange) color, while the outer sheath is made from PUR (adhesion-free, matte), resisting cutting oils and preventing tack to adjacent cables. Two additional shielded cores of 2x1.5 mm² are provided for brake control or thermal sensor circuits, completing the hybrid layout without increasing overall diameter.
