RKL4803 Bosch Rexroth Indramat

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The Bosch Rexroth Indramat RKL4803 is part of the RKL Motor Power Cables series and operates with an operating voltage of 300 V. This cable features 4 power conductors with a cross-section of 0.75 mm² and 2 auxiliary conductors, and is designed for use in cable drag chains with 5,000,000 bending cycles. It is both halogen-free and flame-resistant, with a temperature range from -30 °C to 40 °C.

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Product Description:

The RKL4803 is a flexible motor power cable produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It links IndraDrive servo drives to synchronous motors, transferring three-phase power and auxiliary signals in automated machines that rely on frequent motion. The cable integrates molded connectors at both ends to simplify installation in robots, gantries, and drag chain carriers typical of industrial automation lines. As part of a matched cabling system, it maintains electrical integrity while coping with mechanical stress.

The main circuit inside the cable carries energy through 4 tinned copper power conductors, each sized at 0.75 mm² to support the continuous load current allowed by the drive at its rated voltage of 300 V. Two additional signal cores provide auxiliary functions; these are present as 2 smaller conductors with a cross-section of 0.5 mm² for temperature sensors or brake supply lines. A keyed RLS0749 plug terminates the drive side, while an RLS1701 angled receptacle mates directly with the motor housing, eliminating manual wiring. Together these parameters define current capacity, voltage drop, and the overall electrical interface expected by Rexroth drive controllers.

For moving cable trays the jacket is certified for 5,000,000 bending cycles and may flex to a dynamic radius of 7.5×D without cracking; during static routing the minimum loop reduces to 5×D. Service is reliable from ambient lows of –30 °C up to 40 °C because the insulation remains elastomeric across that range. The outer sheath resists oil splash, flames, and is completely halogen-free, ensuring low smoke generation inside enclosed machines. With approval for drag chain installation the assembly avoids premature fatigue, letting machines operate at high duty cycles while preserving the electrical characteristics set out in the second paragraph.

Auxiliary Conductor Cross-section
0.5 mm²
Bending Cycles
5,000,000
Cable Drag Chain Use
Yes
Drive-side Connector
RLS0749
Dynamic Bending Radius
7.5xD
Flame-resistant
Yes
Halogen-free
Yes
Motor-side Connector
RLS1701
Number Of Auxiliary Conductors
2
Number Of Power Conductors
4
Oil Resistant
Yes
Operating Temp Max
40 °C
Operating Temp Min
-30 °C
Operating Voltage (power)
300 V
Power Conductor Cross-section
0.75 mm²
Static Bending Radius
5xD

Frequently Asked Questions about RKL4803:

Q: How many power conductors are present in the RKL4803 motor power cable?

A: The RKL4803 features four power conductors for main electrical transmission.

Q: What is the maximum number of bending cycles the RKL4803 cable can handle?

A: This cable supports up to 5,000,000 bending cycles, making it highly suitable for dynamic applications.

Q: What is the lowest temperature at which the RKL4803 cable can reliably function?

A: The minimum operating temperature for the RKL4803 is -30 °C.

Q: Is the RKL4803 cable halogen-free for reduced toxic emissions?

A: The RKL4803 is halogen-free for safer use in environments sensitive to toxic emissions.

Q: Can the RKL4803 cable be used in drag chains for motion applications?

A: Yes, the RKL4803 cable is specifically designed for use in cable drag chains.


Internal Product Review

  • ‘‘The RKL4803 from Bosch Rexroth Indramat is a robust motor power cable designed for demanding automation environments, offering 5,000,000 bending cycles and suitability for cable drag chain applications. Its halogen-free and oil-resistant construction ensures high durability and safety in harsh industrial settings. This cable stands out for reliable connectivity and long service life.’’

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