RKL4326 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4326 is part of the RKL Motor Power Cables series and features a PUR jacket with an outer diameter of 14.8 mm. This cable supports drag chain use and withstands up to 5,000,000 bending cycles. It has a power wire cross-section of 2.5 mm², control wire cross-section of 1.0 mm², and uses connectors RLS1301 and RLS0722.
Internal Product Review
The RKL4326 motor power cable from Bosch Rexroth Indramat is engineered for dynamic drag chain applications, featuring a robust PUR jacket and total shield for superior durability and electromagnetic protection. With a rated 5,000,000 bending cycles and RLS1301/RLS0722 connectors, this cable ensures reliable performance in demanding automated environments. Its long service life and flexible construction make it an ideal choice for highly mobile power transmission.
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Product Description:
The RKL4326 motor power cable manufactured by Bosch Rexroth Indramat belongs to the RKL Motor Power Cables series. It is a flexible connection line engineered to transfer three-phase power and control signals between an Indramat servo drive and its matched motor within automated machinery. Designed for dynamic routing inside cable chains, the product maintains electrical integrity and mechanical durability in assembly lines, packaging equipment, and other motion systems.
In continuous-motion applications, the cable withstands up to 5,000,000 flex cycles, so repeated acceleration in energy chains does not crack its insulation. Conductor resistance is limited to 7.98 Ω/km at 20 °C, minimizing voltage drop over long machine runs. A factory-molded plug coded RLS1301 terminates the drive end and mates directly with Rexroth power modules, reducing field wiring errors. The power cores have a cross-sectional area of 2.5 mm², providing adequate current capacity for typical small-frame synchronous motors. Mechanical protection and oil resistance are provided by a PUR outer jacket, which resists welding spatter and coolants while minimizing adhesion during movement. A total shield reduces electromagnetic interference between the power conductors and nearby signal wiring. The cable is also suitable for continuous use in drag chains.
At the motor end, a compact keyed plug designated RLS0722 provides a secure connection while preserving the seal against dust. Separate control pairs with a conductor area of 1.0 mm² feed holding brakes or thermal sensors without requiring an auxiliary harness. Capacitive coupling is limited to 0.7 nF/m, allowing servo drives to operate with low reactive current even when several meters of cable are installed. The overall outside diameter is 14.8 mm, allowing the cable to fit within 35 mm chain cavities and follow compact routing paths without additional conduit. This diameter also leaves room for neighboring cables when the carrier is properly sized and arranged. The keyed motor connector helps maintain the intended contact orientation during installation, while the molded termination protects the conductors from strain at the cable entry point.
