RKL4333 Bosch Rexroth Indramat

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The Bosch Rexroth Indramat RKL4333 is a power cable from the RKL Motor Power Cables series with a PUR jacket and is suitable for drag-chain applications. It features 4 power conductors with a 25.0 mm² cross-section, supports a control voltage of 300 V AC and a power voltage of 600 V AC, and is halogen-free. This cable also allows for up to 5,000,000 bending cycles, with dynamic and static bending radii of 7.5 times and 5.

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Product Description:

The RKL4333 is a motor power cable produced by Bosch Rexroth Indramat and it is part of the RKL Motor Power Cables series. Designed for fixed-to-moving axis connections, the cable carries three-phase motor currents and associated control conductors between a drive controller and a servo motor inside automated production cells. It links the moving servo axis to the control cabinet while maintaining electromagnetic compatibility levels expected in modular drive systems.

The cable core is engineered for high-flex performance; its construction withstands up to 5,000,000 continuous bending cycles when routed in an energy chain. During motion the copper bundle may be curved to a dynamic radius of 7.5 × D, allowing compact loops without exceeding conductor strain limits. Power delivery is handled by four conductors each with a cross-section of 25.0 mm², supporting line currents required by medium-frame synchronous motors and keeping resistive losses low. Auxiliary feedback or brake signals use separate cores sized at 1.5 mm² so that lower-power logic circuits are isolated from the motor phase lines. The cable is rated for up to 600 V AC on the power group, matching the output of Rexroth universal inverters.

In stationary runs the minimum permitted loop contracts to a static radius of 5 × D, which simplifies cabinet dressing where movement is absent. Control cores may be energised at up to 300 V AC, enabling relay or brake actuation without an extra harness. A pre-moulded plug type RLS0724/K25 is fitted on the controller end while the motor side terminates in connector RLS1301/C25; this factory crimping shortens installation time and keeps contact resistance predictable. The PUR outer jacket is halogen-free and drag-chain suitable, so no corrosive gases are released during a cabinet fire and the sheath resists oil and abrasion throughout repetitive axis travel.

Bending Cycles
5,000,000
Control Wire Cross-section
1.5 mm²
Controller-side Connector
RLS0724/K25
Drag-chain Suitable
Yes
Dynamic Bending Radius
7.5 x D
Halogen-free
Yes
Jacket Material
PUR
Motor-side Connector
RLS1301/C25
Operating Voltage (control)
300 V AC
Operating Voltage (power)
600 V AC
Power Conductors
4
Power Wire Cross-section
25.0 mm²
Static Bending Radius
5 x D

Frequently Asked Questions about RKL4333:

Q: Is the RKL4333 cable designed for drag-chain applications, and what is its bending cycle rating?

A: The RKL4333 is suitable for use in drag-chain applications and is rated for up to 5,000,000 bending cycles.

Q: What is the power wire cross-section of the RKL4333 motor cable?

A: The RKL4333 has a power wire cross-section of 25.0 mm², accommodating high current loads.

Q: What material is used for the jacket of the RKL4333 cable, and what advantages does it provide?

A: A PUR jacket is used for the RKL4333 cable, offering increased chemical and abrasion resistance.

Q: What type of connector is used on the motor side of the RKL4333 cable?

A: The motor-side connector on the RKL4333 cable is the RLS1301/C25 type.

Q: Is the RKL4333 cable halogen-free, and why is this beneficial?

A: The RKL4333 cable is halogen-free, making it a safer choice in fire-sensitive environments.


Internal Product Review

  • ‘‘The RKL4333 is a Bosch Rexroth Indramat motor power cable designed for demanding environments, featuring a robust PUR jacket and halogen-free construction. Drag-chain suitability and an impressive 5,000,000 bending cycles ensure long-term reliability in dynamic applications. This cable stands out for its durable build and high-performance flexibility.’’

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