Product Description:

The RKL4783 is a motor power cable manufactured by Bosch Rexroth Indramat for the RKL Motor Power Cables series. The assembly links a servo drive to its motor, carrying phase current together with auxiliary signals during coordinated motion. It is intended for drag-chain, robot wrist, and gantry routes where repeated flexing and consistent electrical performance are essential. By combining robust conductors with a dedicated PUR jacket, the product preserves signal integrity and mechanical stability in automated production cells, packaging lines, and assembly systems.

At its core, the cable is built on bulk cable INK0667 and terminates with Connector A RLS1301/C35 at the drive end and Connector B RLS0727/K35 at the motor housing. The conductor set follows a 4x35 mm² + 2x(2x1.5 mm²) layout; the four large cores carry motor phases while the paired smaller cores route brake or temperature signals. Motor phases can be energized up to 300/500 V, and the auxiliaries tolerate 300/300 V. Direct-current resistance is 0.554 Ω/km, limiting voltage drop on extended runs. With an overall diameter of 30.8 mm, the assembly fits standard carrier partitions and is enclosed in a PUR (adhesion-free, matte) jacket that resists abrasion and prevents sticking during tight-radius motion. The insulation system remains stable when conductor temperatures reach +80 °C in motion and +90 °C in fixed routing.

Mechanical service life is rated for 5 million flex cycles. During movement the minimum loop radius must equal 7.5×D, whereas fixed placement permits a tighter 5×D bend. The cable stays flexible within a temperature band of −20 to +40 °C; fixed installation extends the lower limit to −30 °C while keeping the same upper boundary. These limits, together with the dynamic radius and high cycle count, allow reliable power delivery in high-duty servo axes.