RKL4440 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4440 is part of the RKL Motor Power Cables series and features a PUR jacket in orange (RAL 2003) with an outer diameter of 25.5 mm. The cable offers total shielding, a cross-section of 16.0 mm², and supports up to 5,000,000 bending cycles. It is compatible with INK0606 bulk cable type and uses an M40 x 1.5 EMC fitting thread.
Internal Product Review
The RKL4440 is a high-durability motor power cable from Bosch Rexroth Indramat, designed for demanding automation with a PUR jacket and total shielding for reliable protection. It is rated for up to 5,000,000 bending cycles and supports a maximum conductor temperature of 80°C. This cable is well-suited for dynamic industrial environments requiring robust, long-life solutions.
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Product Description:
The RKL4440 motor power cable is manufactured by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It transfers drive output from an Indramat power module to the terminal box of a compatible servo motor. The cable is designed to maintain electromagnetic compatibility and withstand the mechanical demands of moving industrial automation equipment, including machine tools, material-handling systems, and other applications that use repetitive servo motion.
The cable is rated for 5,000,000 bending cycles, allowing it to operate in drag chains or moving carriers without premature conductor fatigue. Its copper conductors have a cross-sectional area of 16.0 mm², providing a low-resistance path for the high phase currents required by larger servo motors. The circular sheath has a diameter of 25.5 mm, which must be considered when selecting cable clamps, carrier partitions, and routing clearances. The outer jacket is made from PUR, which resists oil, coolant, and abrasion in demanding machining environments. An overall shield surrounds the conductors and reduces common-mode electrical noise near feedback cables and low-voltage signal lines. Proper separation from sensitive wiring and secure support along the cable route help protect the assembly from excessive strain during repeated movement.
The assembly uses bulk cable type INK0606, providing the conductor arrangement needed for the completed motor power connection. An EMC fitting with an M40 × 1.5 thread connects the shield to compatible gland plates and supports continuous grounding around the cable circumference at cabinet entries. The jacket is orange (RAL 2003), making the power cable easy to distinguish from other wiring in crowded ducts and cable carriers. The conductor insulation supports a maximum operating temperature of 80 °C, allowing the cable to function in enclosed spaces where surrounding equipment contributes additional heat. All conductors terminate in a size-4 motor terminal box, which provides a protected connection point at the motor. Adequate bend clearance should be maintained near the terminal box and EMC fitting so the cable is not subjected to sharp bends or concentrated mechanical stress.
