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RKL4764 Bosch Rexroth Indramat

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Internal Product Review

The RKL4764 from Bosch Rexroth Indramat is a robust motor power cable designed for demanding motion applications, featuring a 25.0 mm² power conductor cross-section and 5,000,000 bending cycles for long-term durability. The cable includes two control pairs and a dynamic bending radius of 7.5xD, ensuring reliable signal and power transmission in flexible installations. This combination of mechanical endurance and electrical performance makes the RKL4764 a solid choice for high-use automation environments.

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Product Description:

The RKL4764 is a flexible motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It links a Rexroth drive controller to a rotary or linear servo motor in automated machinery, carrying three-phase power and auxiliary control signals through a single jacketed assembly. By combining power cores with paired signal conductors, the cable helps streamline cabinet wiring and maintain electromagnetic compatibility between inverter outputs and motor terminals.

This model is manufactured from the INK0607 bulk cable and contains 4 power cores, each with a cross-sectional area of 25.0 mm² to carry continuous phase current for high-torque Rexroth motors. Two shielded control pairs are also included. Their individual conductors have a cross-sectional area of 1.5 mm², allowing temperature sensors or holding-brake coils to receive adequate current without excessive voltage drop. A thermoplastic jacket brings the finished outer diameter to 29.8 mm. Internal copper strands have a direct-current resistance of 0.78 Ω per kilometer at 20 °C, limiting resistive losses along extended cable runs and preserving drive efficiency. The paired signal conductors are twisted to improve noise rejection near motor power circuits and other sources of electromagnetic interference.

During continuous movement, the cable supports a minimum bend radius of 7.5 × D, allowing it to follow moving drag-chain routes while keeping conductor stress within tolerance. Fixed installations permit a minimum bend radius of 5 × D, accommodating tighter routing where the cable remains stationary. Its fatigue life is rated for 5,000,000 cycles under continuous motion, making it suitable for pick-and-place axes, gantry carriers, and other repetitive-motion systems. The control-cabinet end has a premolded RLS1302/C25 connector. The motor end terminates with an RLK1301 plug that connects to compatible MSK and MKE frame motors. These installed connectors reduce the need for field assembly while providing secure terminations at both ends of the cable.

Bending Cycles
5,000,000
Bulk Cable Type
INK0607
Conductor Resistance (20°c)
0.78 Ω/km
Control Pairs
2
Control Wire Cross-section
1.5 mm²
Controller-side Connector
RLS1302/C25
Dynamic Bending Radius
7.5xD
Motor-side Connection
RLK1301
Overall Diameter
29.8 mm
Power Conductor Cross-section
25.0 mm²
Power Conductors
4
Static Bending Radius
5xD

Frequently Asked Questions about RKL4764:

Q: How many bending cycles can the RKL4764 power cable withstand?

A: The RKL4764 cable is specified for 5,000,000 bending cycles.

Q: How many power conductors are included in the RKL4764 cable?

A: This power cable has four main power conductors for electrical transmission.

Q: What controller-side connector is used on the RKL4764 cable?

A: The controller-side connector for this cable is the RLS1302/C25 model.

Q: What is the dynamic bending radius requirement for the RKL4764 cable?

A: The dynamic bending radius for this cable is 7.5 times the cable diameter (D).

Q: What is the cross-sectional area of the power conductors in the RKL4764 cable?

A: The power conductors in this cable have a cross-section of 25.0 mm².

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