RKL4721 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4721 is a motor power cable from the RKL Motor Power Cables series, featuring a PUR jacket and an orange color (RAL 2003). This cable has a diameter of 17.0 mm, supports up to 5,000,000 bending cycles, and is drag chain compatible. It includes 4x4.0 mm² power conductors and 2x1.0 mm² plus 2x1.5 mm² control conductors, with a voltage rating of 600 V AC.
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Product Description:
The RKL4721 belongs to the RKL Motor Power Cables series produced by Bosch Rexroth Indramat. This flexible cable is intended for routing motor power between servo drives and synchronous or asynchronous motors in automated machinery, where reliable current delivery and motion endurance are essential.
The cable core is engineered for up to 5,000,000 reciprocating bends, a figure aimed at long life inside energy-chain installations. A sheath diameter of 17.0 mm provides space for its four power conductors, specified as 4x4.0 mm², and two control pairs of 1.0 mm² and 1.5 mm² that carry brake or sensor signals. Power losses along extended runs are moderated by a conductor resistance of 4.95 Ω/km, while the assembly’s working insulation is rated for 600 V AC. Drag-chain compatibility is affirmed for continuous motion axes, and the PUR outer jacket protects the cores against coolants, oils, and abrasion during dynamic travel.
The external jacket is colored Orange (RAL 2003) for quick visual identification in multi-cable trays. Signal integrity is helped by a distributed capacitance of 0.8 nF/m, limiting reactive current in high-frequency inverter output. Installation inside moving chains requires a minimum dynamic loop of 7.5xD; stationary routing can tighten to a static arc of 5xD. These bend radii, together with the PUR sheath, prevent conductor fatigue at clamping points. By combining color coding, controlled impedance, and distinct power-plus-control layouts, the cable completes the electrical link between drive and motor without exceeding mechanical stress limits.
Frequently Asked Questions about RKL4721:
Q: What is the bending cycle rating of the RKL4721 motor power cable?
A: The RKL4721 motor power cable can withstand up to 5,000,000 bending cycles, suitable for dynamic applications.
Q: What material is used for the outer jacket of the RKL4721 cable?
A: This cable features a PUR jacket material for durability in harsh environments.
Q: What is the voltage rating of the power wires in the RKL4721 cable?
A: The RKL4721 has a power wire voltage rating of 600 V AC, making it suitable for high voltage motor connections.
Q: Is the RKL4721 cable compatible with drag chain applications?
A: The cable is drag chain compatible, designed to function reliably in motion-intensive setups.
Q: What are the sizes of the control conductors in the RKL4721 cable?
A: The control conductors in this cable are specified as 2x1.0 mm² and 2x1.5 mm².
