RKL4644 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4644 is a motor power cable from the RKL Motor Power Cables series. It features 4 auxiliary conductors with a cross-section of 1.5 mm² and 4 power conductors with a 25.0 mm² cross-section. The cable has a PUR jacket, an outer diameter of 29.8 mm, and supports up to 5,000,000 bending cycles for drag chain use.
Internal Product Review
The RKL4644 power cable from Bosch Rexroth Indramat is designed for demanding motion applications, featuring a sturdy PUR jacket and compatibility with drag chain installations. With a cable structure of 4x25.0 mm² conductors plus auxiliary wires, and rated for up to 5,000,000 bending cycles, it ensures both durability and operational flexibility. This cable stands out for robust construction and reliable performance in dynamic environments.
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Product Description:
The RKL4644 is a cable manufactured by Bosch Rexroth Indramat within the RKL Motor Power Cables series. Intended for drive technology, the cable links servo amplifiers to moving motors and supplies both main phase current and auxiliary signals in industrial automation cells. Its design suits dynamic axes that move inside drag-chain systems where repeated flexing and secure power delivery are required.
In the power circuit the cable carries 4 primary conductors, each with a cross-section of 25.0 mm², so voltage drop is kept low during high current peaks. These copper cores sit inside a geometry that brings the overall sheath to 29.8 mm, a dimension used when selecting cable glands and energy-chain channels. A sheath of PUR that is adhesion-free and matte resists oil splash and welding spatter while allowing easy extraction from plastic carriers. For stationary installations the minimum installation arc is 5 × D, meaning the cable can be laid in tight cabinets without exceeding conductor strain limits. The internal layout mirrors the listed structure of 4×25.0 mm² plus two paired auxiliary elements for signal or brake power distribution.
Four auxiliary conductors arranged as two twisted pairs each use 1.5 mm² copper, forming low-load circuits for brakes, sensors or fans without extra cabling. During machine motion the chain-rated bend radius widens to 7.5 × D, a value coordinated with carriers that run back-and-forth cycles. Endurance is specified at 5,000,000 flex cycles, so the cable can follow linear axes for years before jacket fatigue appears. Operation in fixed routing remains functional from -30 to +40 °C, while the flexible installation limit is –20 to 40 °C, aligning with typical factory environments.
