RKL4780 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4780 is part of the RKL Motor Power Cables series and features a cable jacket made of PUR with an outer diameter of 30.8 mm. This cable is engineered for 5,000,000 bending cycles, has a conductor count of 8, and a power conductor cross-section of 35.0 mm².
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Product Description:
The RKL4780 is a flexible motor power cable produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It links an Indramat drive controller to a servomotor and carries both power and auxiliary control signals, enabling coordinated motion in automated machinery that demands continuous movement and frequent axis reversals.
The cable delivers motor current through conductors with a cross-section of 35.0 mm², while separate control cores rated at 1.5 mm² handle brake or sensor lines. Inside the jacket there are 8 individual copper conductors arranged to limit mutual interference and simplify termination. A moulded polyurethane sheath made of PUR protects the bundle from cutting fluids and oil exposure, and keeps the overall diameter to 30.8 mm. Installation in static trays requires a minimum bend of 5×D, and dynamic routing on cable chains may follow a tighter 7.5×D radius without exceeding permissible strain. The controller interface uses a prefabricated RLS0727/K35 plug, whereas the motor end is fitted with an RLK1501 connector that locks to Indramat drive motors.
The mechanical life is verified for 5,000,000 flex cycles under constant motion, supporting high-duty gantries and pick-and-place axes. Line-to-line capacitance is held to 1.2 nF/m so the connected drive can maintain stable pulse-width modulation at long cable lengths. Conductor resistance is only 0.554 ohm/km, minimizing voltage drop at full load. The design follows the INK0667 bulk cable specification, ensuring identical electrical parameters across different lengths. The factory-mounted RLS0727/K35 and RLK1501 terminations reduce wiring errors, maintain shielding continuity, and shorten commissioning time for field technicians.
Frequently Asked Questions about RKL4780:
Q: How many bending cycles can the RKL4780 cable withstand before degrading?
A: The RKL4780 motor power cable supports up to 5,000,000 bending cycles for extended flexibility and durability in motion applications.
Q: How many conductors are present in the RKL4780 cable from Bosch Rexroth?
A: This cable contains eight conductors, allowing for multiple connection pathways within a single assembly.
Q: What material is used for the cable jacket on the RKL4780 power cable?
A: The jacket on the RKL4780 is made of PUR, providing resistance to chemicals and abrasion.
Q: What is the cross-sectional area of the power conductor in the RKL4780 cable?
A: The power conductor cross-section on the RKL4780 cable is 35.0 mm², supporting high current capacity.
Q: What is the dynamic bending radius required for the RKL4780 motor power cable during installation or movement?
A: The dynamic bending radius for this cable is specified as 7.5 times the cable's outer diameter.
