RKL4766 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4766 is part of the RKL Motor Power Cables series and features a power wire cross-section of 6.0 mm² with a cable construction of 4x6.0mm² plus shielded auxiliary wires. This cable offers flexibility with a bending radius of 5 x D when fixed and 7.5 x D when used flexibly, and it supports up to 5 million bending cycles.
Internal Product Review
The RKL4766 is a motor power cable from the RKL series by Bosch Rexroth Indramat, featuring a robust PUR jacket in RAL 2003 orange for high visibility and abrasion resistance. Designed for demanding motion applications, it offers up to 5 million bending cycles and supports a maximum travel velocity of 5 m/s. This cable stands out for its durability in dynamic cable carrier systems.
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Product Description:
The RKL4766 motor power cable is produced by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It is intended to supply three-phase drive power and auxiliary signals between Indramat servo drives and synchronous motors in moving machine axes. By combining main conductors and sensor pairs in a single jacketed assembly, the part simplifies routing inside cable chains and supports dynamic applications such as gantry robots and pick-and-place modules.
Designed for continuous motion, the cable withstands 5 million bending cycles when installed in an articulated carrier. A minimum static bending radius of 5 x D protects the copper cores during fixed routing, while a dynamic radius of 7.5 x D applies when the cable flexes with the axis, preventing conductor fatigue. Electrical losses are limited by a direct-current resistance of 3.30 Ω/km at 20 °C, and signal integrity is aided by a line-to-shield discharge capacitance of 0.8 nF/m that keeps reactive currents low in long runs. These properties allow stable drive operation over extended lengths without overheating or voltage drop.
The internal layout follows the composite bundle 4x6.0 mm²+(2x1.0 mm²)StC+(2x1.5 mm²)StC, so four 6 mm² power cores sit beside shielded control pairs for temperature or brake circuits. A sheath of PUR (adhesion-free, matte) resists coolants and abrasion, and its high-visibility RAL 2003 (orange) color marks the run as energized power wiring. When supported in a drag chain the assembly can travel at up to 5 m/s without exceeding mechanical limits. The 6 mm² power cross-section matches the continuous current demand of medium-frame Indramat motors while keeping cable size compatible with standard hybrid connectors.
