RKL4755 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4755 is a cable from the RKL Motor Power Cables series, featuring 4 power conductors with a cross-section of 4.0 mm² and 4 auxiliary conductors. It is designed for up to 5,000,000 bending cycles and supports a flexible operating temperature range of -20 to +40 °C. The minimum bending radius for flexible use is 7.5 times the cable diameter.
Internal Product Review
The RKL4755 is a Bosch Rexroth Indramat motor power cable featuring four power conductors and four auxiliary conductors for reliable signal and power transmission. Rated for up to 5,000,000 bending cycles and a flexible operating temperature range from -20 to +40 °C, this cable is engineered for demanding motion applications. Overall, it stands out for exceptional flexibility and durability in dynamic environments.
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Product Description:
The RKL4755 motor power cable is supplied by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is intended for fixed or dynamic routing between servo drives and machine motors in automated lines, providing balanced three-phase energy plus auxiliary functions through its internal conductors. The sheath carries four power cores as well as four auxiliary conductors for brake or sensor circuits, so a single run covers all required motor connections. By combining these paths, the cable simplifies cabinet wiring and supports compact machine layouts.
Four dedicated phase paths deliver the main current, and the matching protective conductor brings the total number of power cores to 4. Each of these cores uses a copper cross-section of 4.0 mm², giving the assembly a low resistive drop for lengths allowed by the drive sizing tables. The outer jacket is qualified for 5,000,000 bending cycles in drag-chain operation, and mechanical damage is further prevented when the cable is installed on a fixed routing radius of 5 × D. Under stationary conditions it remains functional from -30 to +40 °C, allowing use in unheated production halls.
Dynamic applications are handled with a flexible routing limit of 7.5 × D, after which conductor stress would exceed specification. Internal control pairs support temperature monitoring or brake release; the pair assigned to wires 5 and 6 is rated at 1.0 mm², while the pair for wires 7 and 8 is 1.5 mm², enabling separate current capacities for feedback devices. When motion is continuous, the sheath endures ambient swings from -20 to +40 °C, and the PVC insulation tolerates conductor temperatures up to +80/+90 °C during flexible and fixed duty respectively. The allowed storage temperature is identical to the fixed operating limits, and identical auxiliary and power core counts simplify connector selection.
