RKL4716 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4716 is part of the RKL Motor Power Cables series and features a PUR jacket in RAL 2003 orange color, with an outer diameter of 14.8 mm. Its power wires have a cross-section of 3x2.5 mm² plus a PE wire, and it supports drag chain use with a bending cycle rating of up to 5,000,000 cycles.
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Product Description:
The RKL4716 motor power cable is produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It links an IndraDrive power module to a Rexroth servomotor, combining three-phase power, protective earth, and auxiliary conductors inside a PUR jacket. The jacket is colored RAL 2003 orange for clear identification along machine routes. Factory-molded connectors and a controlled conductor arrangement simplify installation in packaging lines, handling robots, and other automation axes that require reliable power delivery during continuous movement. The integrated conductors allow motor power and auxiliary signals to follow one cable route, reducing the number of separate connections between the drive and motor.
At the motor end, the molded RLK1301 connector mates directly with Rexroth synchronous motors, while the control-cabinet side uses a right-angled RLS0721/K03 plug that aligns with IndraDrive inverters. Inside the cable core, power conductors with a cross section of 3 × 2.5 mm² plus a 2.5 mm² protective earth conductor support typical continuous currents for compact servo axes. Four additional cores carry brake-release or sensor-supply signals and are shielded together with the power bundle. The common shielding helps protect the auxiliary circuits from electrical interference generated by motor switching. The assembly uses Rexroth bulk cable type INK0602, and its overall diameter of 14.8 mm permits routing through standard metric glands without oversized strain-relief hardware. The right-angled cabinet connector also supports cable routing where clearance near the inverter is limited.
The cable is rated for drag-chain operation and can withstand up to 5,000,000 bending cycles without conductor fatigue. During dynamic motion, the minimum permissible bending radius is 7.5 × D, which limits stress on the copper strands as the cable travels through a carrier. Fixed routing permits a tighter bending radius of 5 × D because the cable does not experience repeated movement in that arrangement. Observing these bending limits helps preserve conductor continuity and electrical stability throughout the cable’s service life. The auxiliary bundle uses four 1.0 mm² cores, allowing brake coils or 24 V supplies to remain within acceptable voltage-drop tolerances at the far end of long carriages. These auxiliary conductors share the durable outer jacket with the motor conductors while remaining arranged for their separate electrical functions.
