RKL4421 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4421 is a motor power cable from the RKL Motor Power Cables series. It features a 4x2.5 mm² plus 2x(2x1.0 mm²) stranded conductor construction and supports up to 5,000,000 bending cycles, making it suitable for drag chain applications. This cable is halogen-free, features a PUR matte orange jacket, and has a typical capacitance of 0.7 nF per meter.
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Product Description:
The RKL4421 is a motor power cable supplied by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It connects Indramat servo drives to their corresponding motors, transmitting three-phase power and low-level control signals while withstanding continuous motion inside drag chains used in automated machinery and robotics.
This model is rated for 5,000,000 flex cycles, so it tolerates repetitive travel in high-duty cable carriers without conductor fatigue. Its core layout of 4x2.5 mm² + 2x(2x1.0 mm²) separates motor phases from twisted control pairs, limiting crosstalk and easing termination. A typical line-to-shield capacitance of 0.7 nF/m reduces reactive current drawn from the drive at high PWM frequencies, while the copper conductors exhibit only 7.98 Ω/km at 20 °C, keeping I²R losses low over long runs. The cable is approved for drag-chain use and includes a total braid shield that blocks emitted EMI.
Two signal pairs with a cross-section of 1.0 mm² feed temperature sensors or brakes and remain isolated from power cores by extruded fillers. External wear is minimised by the matte, adhesion-free PUR jacket coloured RAL 2003, making inspection easy on busy cable trays. The orange sheath is halogen-free to limit corrosive gases during a fire, and the dedicated earthing drain is integrated beneath the shield. Each power conductor uses a cross-section of 2.5 mm², matching Rexroth drive terminals for 4 kW class motors.
Wake Industrial stocks this cable, provides same-day shipping on qualifying orders, and issues quotations that remain valid for 30 days.
Frequently Asked Questions about RKL4421:
Q: How many bending cycles can the RKL4421 power cable withstand?
A: The RKL4421 cable is rated for up to 5,000,000 bending cycles, suitable for applications with frequent movement.
Q: What is the typical capacitance of the RKL4421 motor power cable?
A: The RKL4421 has a typical capacitance of 0.7 nF per meter, which helps minimize signal interference over cable length.
Q: What is the conductor configuration of the Bosch Rexroth RKL4421 cable?
A: The cable is constructed with four 2.5 mm² power wires and two pairs of 1.0 mm² control wires for reliable motor operation and control.
Q: What material and color is the jacket of the RKL4421 power cable?
A: The outer jacket of the RKL4421 is made from matte, adhesion-free PUR and colored in RAL 2003 orange.
Q: Does the RKL4421 motor power cable feature overall shielding?
A: Yes, the RKL4421 has a total shield to enhance electromagnetic compatibility and reduce external interference.
