RKL4351 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4351 is part of the RKL Motor Power Cables series and features a cable diameter of 17.0 mm with a PUR jacket material. It is drag chain suitable with a minimum bending radius of 5 times the diameter when fixed, and it supports an operating voltage of 600 VAC. The cable offers 5,000,000 bending cycles and includes a power wire cross-section of 4 x 4.0 mm².
Internal Product Review
The RKL4351 from Bosch Rexroth Indramat is a robust motor power cable designed for demanding industrial environments, featuring a PUR jacket and a power wire cross-section of 4 x 4.0 mm². This model is drag chain suitable and rated for up to 5,000,000 bending cycles, ensuring durability in dynamic applications. Overall, the RKL4351 stands out for its flexibility and long service life in power transmission tasks.
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Product Description:
The RKL4351 motor power cable is manufactured by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It supplies three-phase electrical power and auxiliary signals between a drive controller and a servo motor in industrial automation systems that experience continuous motion. Support for dynamic routing allows the cable to follow linear axes and articulated robots without signal loss or premature fatigue. This capability makes the cable suitable for high-cycle material-handling and machining equipment where power and control connections must move with the driven axis.
The electrical core consists of power conductors sized at 4 × 4.0 mm², surrounded by control conductors arranged in a 2 × 1.0 + 2 × 1.5 mm² configuration. These copper conductors support a line voltage of 600 VAC, while a loop resistance of 4.95 Ω/km helps limit voltage drop over typical machine lengths. The assembly uses bulk cable type INK0603 and has an external diameter of 17.0 mm, allowing the cable to fit compatible gland plates and drag-chain compartments. A PUR extrusion over the core forms a smooth jacket that resists exposure to oil and coolant. The assembly includes factory-terminated plugs, with an RLS0721/K04 connector at the drive end and an RLS1207 connector at the motor end. These terminations provide dedicated interfaces for connecting the cable to compatible drive and motor components.
The cable withstands 5,000,000 bending cycles when routed in an energy chain, supporting machinery with frequent repetitive movement. Stationary routing requires a minimum bend radius of 5 × D to prevent excessive mechanical stress on the conductors and jacket. Moving loops must maintain a minimum bend radius of 7.5 × D to preserve conductor integrity during continuous flexing. Proper separation from sharp edges and nearby moving hardware helps prevent localized abrasion as the cable travels through its operating path. The PUR sheath also supports the low-particulate requirements commonly associated with food-processing and packaging lines. Its pre-terminated design reduces the need to prepare individual conductors during installation while maintaining the required power and auxiliary connections.
