RKL4784 Bosch Rexroth Indramat

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The Bosch Rexroth Indramat RKL4784 is part of the RKL Motor Power Cables series and features 4 power conductors with a 35.0 mm² cross-section and 4 control conductors with a 1.5 mm² cross-section. It has a dynamic bending radius of 7.5 times the cable diameter, supports up to 5,000,000 bending cycles, and has a PUR jacket with a 30.8 mm outer diameter.

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Product Description:

The RKL4784 is a finished motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is supplied with factory-assembled connectors on both ends and is intended to link an Indramat servo drive to its matched servo motor in automated machinery. By combining power and auxiliary control conductors in a single flexible jacket, the cable simplifies routing inside moving machine axes while maintaining the electrical integrity demanded by high-performance drive systems.

Mechanical durability is provided by a rated service life of 5,000,000 flex cycles, measured with a dynamic bending radius of 7.5xD. Four dedicated power cores each use copper conductors of 35.0 mm², limiting line losses to a resistance of 0.554 Ohm/km. The overall outside diameter is 30.8 mm, and a tough PUR outer jacket guards against cutting fluids and abrasion. At the inverter end, the cable terminates in connector RLS0727/K35. Electrical performance for motor commutation is supported by a discharge capacitance of 1.2 nF per metre, helping the drive maintain switching edge fidelity. Power conductors are accompanied by a separate protective conductor to complete the PE circuit.

The motor side is pre-fitted with connector RLK1301/K35, and four auxiliary control cores are provided, each having a cross-section of 1.5 mm² to carry brake release or sensor signals. These control conductors share the cable bundle but are separately shielded to limit crosstalk. Installation in stationary segments is possible down to a static bend radius of 5xD. Together, the matched connector pair, duplicate conductor count on both power and control circuits, and the specified bending parameters allow repeatable motion of linear gantries and rotary tables without premature cable failure.

Bending Cycles
5,000,000
Conductor Resistance
0.554 Ohm/km
Control Conductors
4
Control Wire Cross-section
1.5 mm²
Controller-side Connector
RLS0727/K35
Discharge Capacity
1.2 nF/m
Dynamic Bending Radius
7.5xD
Jacket Material
PUR
Motor-side Connector
RLK1301/K35
Outer Diameter
30.8 mm
Power Conductors
4
Power Wire Cross-section
35.0 mm²
Static Bending Radius
5xD

Frequently Asked Questions about RKL4784:

Q: How many bending cycles can the RKL4784 power cable withstand?

A: The RKL4784 is designed to achieve up to 5,000,000 bending cycles for demanding dynamic applications.

Q: What is the cross-sectional area of the control wires in the RKL4784 cable?

A: The control wires in the RKL4784 have a cross-section of 1.5 mm² each.

Q: Which connector is provided on the controller side of the RKL4784 cable?

A: A connector type RLS0727/K35 is used for the controller side of the RKL4784 cable.

Q: What material is used for the jacket of the RKL4784 power cable?

A: The RKL4784 cable uses a PUR jacket for enhanced durability and flexibility.

Q: What is the cross-sectional area of the power conductors in the RKL4784?

A: The RKL4784 features a power conductor cross-section of 35.0 mm² for each of its four power wires.


Internal Product Review

  • ‘‘The RKL4784 motor power cable from Bosch Rexroth Indramat features a robust PUR jacket and supports both power and control conductors, each with a dedicated cross-section for reliable current transmission. Dynamic applications benefit from the 5,000,000 bending cycles and a flexible 7.5xD bending radius. This cable is engineered for long service life in demanding motion systems.’’

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