RKL4411 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4411 is part of the RKL Motor Power Cables series and features a power wire configuration of 4 x 35.0 mm² with a total shield for enhanced protection. This cable has a PUR outer jacket in RAL 2003 orange, a maximum wire temperature of 90°C, and supports operating voltages of 300/500 V for power and 300/300 V for control.
Internal Product Review
The RKL4411 from Bosch Rexroth Indramat is a robust motor power cable featuring a 4 x 35.0 mm² power wire configuration and total shield construction for reliable power transmission. Its PUR outer jacket in RAL 2003 orange provides excellent durability, while the cable is rated for up to 90 °C and 300/500 V operation. This model is well-suited for stable industrial environments where drag chain suitability is not required.
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Product Description:
The RKL4411 motor power cable is supplied by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It links a servo drive to a compatible motor while maintaining the phase, protective earth, and control circuits used by Indramat automation platforms. The design allows direct termination to motors with a size 3 terminal box, and it follows the INK0667 bulk cable construction code to maintain consistent electrical properties across different cut lengths. By combining power and control conductors under a single PUR jacket, the assembly simplifies routing between the control cabinet and machine. This arrangement also reduces the number of separate cable paths required for motor power, temperature monitoring, and brake control.
The external profile measures 30.8 mm in diameter, which affects the required conduit size and bend clearance at the machine frame. Four power conductors have a cross section of 35.0 mm² and carry motor power and protective earth connections. These conductors are insulated for a maximum operating voltage of 300/500 V. Two twisted pairs comprise 4 × 1.5 mm² control cores that carry temperature sensor and brake signals alongside the motor leads. A laminated copper braid and aluminum-polyester foil form a total shield that limits emitted electrical noise and supports electromagnetic compatibility. The thermoplastic polyurethane jacket is RAL 2003 orange, making the motor circuit easier to distinguish from other wiring. Because the cable is not intended for continuous flexing, it should be installed outside drag chains and other routes involving repetitive motion.
The control cores operate at 300/300 V, keeping their insulation coordinated with the power conductors without unnecessarily increasing the cable diameter. The copper conductors have a direct-current resistance of 0.554 Ω/km, which can be used to calculate voltage drop over long machine runs. The maximum permitted conductor temperature is 90 °C, providing a clear limit for operation under electrical load. Distributed capacitance is 1.2 nF/m, an important value when calculating rise times for fast-switching inverter outputs. Proper routing and shielding connections help control high-frequency interference between the drive and motor. Fixed installation also protects the large conductors and internal control pairs from the mechanical stress associated with repeated bending.
