RKL4311 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4311 is part of the RKL Motor Power Cables series and features a PUR cable jacket with a diameter of 12.2 mm. This cable supports up to 5 million bending cycles, has a halogen-free construction, and includes M40 9-pin connectors on both ends. It is rated for a power wire voltage of 300/500 V and offers a power wire cross-section of 1.5 mm².
Internal Product Review
The RKL4311 motor power cable from Bosch Rexroth Indramat features a durable PUR jacket and halogen-free construction, making it suitable for demanding industrial environments. With a 5 million bending cycle rating and M40 9-pin connectors on both ends, this cable is built for reliable, long-term performance. Overall, the RKL4311 offers robust connectivity and excellent flexibility for dynamic motion applications.
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Product Description:
The RKL4311 is a flexible motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is engineered to supply armature current and auxiliary signals between Indramat servo motors and their associated drive amplifiers in automated machinery. The cable supports continuous motion tasks where routing through drag chains, cable carriers, or robotic joints is required, maintaining electrical integrity while withstanding mechanical stress typical of dynamic industrial axes. Its design follows the electrical layout conventions used across the series so installers can substitute lengths without revising connector pin-outs.
The mechanical service life is defined by a rated endurance of 5 million bending cycles, allowing repeated flexing in high-duty applications. During movement the cable should observe a minimum dynamic loop of 7.5×D, while static routing requires only 5×D; these radii minimise conductor strain and prevent insulation cracking. A circular diameter of 12.2 mm makes the assembly compatible with standard M40 glands and energy-chain separators. External abrasion and coolant splashes are resisted by a sheath formed from PUR, a polyurethane compound known for cut resistance and oil tolerance. Together these features let the RKL4311 move with the axis without premature jacket fatigue or conductor breakage.
Electrically, three power cores each have a cross-section of 1.5 mm² and can carry phase potentials up to 300/500 V in equipment that conforms to low-voltage regulations. A separate control pair fabricated at 0.75 mm² handles temperature sensor or brake signals without adding excessive bulk. Total copper path resistance is limited to 13.3 Ohm/km at 20 °C, ensuring modest voltage drop over typical machine lengths. The cable is halogen-free to reduce corrosive gas formation during a fire and is supplied with identical M40 9-pin connectors at both ends to simplify replacement tasks.
