RKL4528 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4528 is part of the RKL Motor Power Cables series and features a jacket made of adhesion-free PUR with an orange RAL 2003 color. The cable has a power wire cross-section of 10.0 mm², supports use in cable drag chains for up to 5,000,000 bending cycles, and has an outer diameter of 22.2 mm. Its auxiliary wire cross-sections are 1.0 mm² and 1.5 mm², and the minimum bend radius for fixed andflex
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Product Description:
The RKL4528 cable is manufactured by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It serves as a flexible motor power link that delivers line voltage and auxiliary signals from a drive controller to a moving motor in automated production equipment. The cable is engineered for continuous movement in cable drag chains found on gantry loaders, pick-and-place axes, and machining centers. A single orange PUR jacket protects the power and auxiliary conductors while preserving electrical integrity during repeated motion.
The three core conductors that supply the motor windings each have a cross-sectional area of 10.0 mm², providing a low-impedance path that limits voltage drop during acceleration peaks. Separate auxiliary pairs are also included. Wires 5 and 6 have 1.0 mm² conductors suitable for brake release circuits or temperature sensors, while wires 7 and 8 have 1.5 mm² conductors that can carry higher brake currents without overheating. Line-to-line capacitance is limited to 1.0 nF/m, which helps the drive reduce common-mode leakage to ground at high PWM switching frequencies. The DC resistance of the power cores is 1.91 Ω/km, reducing thermal losses over long cable runs. A matte, adhesion-free PUR sheath in RAL 2003 orange resists oil and weld spatter while remaining easy to separate from adjacent cables.
Mechanical endurance is rated for drag-chain service over as many as 5,000,000 bending cycles, supporting continuous movement during high-duty production shifts. For fixed installation, the cable can be routed with a minimum bend radius of 5 × D. During continuous movement, a minimum bend radius of 7.5 × D keeps conductor stress within acceptable limits. The cable has an overall diameter of 22.2 mm, allowing routing space and carrier dimensions to be planned accurately. Its drag-chain construction supports repeated axis movement while reducing the risk of conductor breakage or jacket cracking.
