RKL4785 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4785 belongs to the RKL Motor Power Cables series and features a bulk cable type INK0607. It supports 5,000,000 bending cycles, uses PUR matte jacket material in RAL 2003 color, and has control conductors of 4 x 1.5 mm². The cable provides a conductor resistance of 0.78 ohm/km and uses RLS0727 (K25) and RLS1301 (C25) connectors.
Internal Product Review
The RKL4785 is a Bosch Rexroth Indramat RKL Motor Power Cable designed for demanding motion applications, featuring a high bending cycle rating of 5,000,000 and a dynamic bending radius of 7.5xD for flexible routing. This cable uses a durable PUR jacket in RAL 2003 and is equipped with RLS0727 (K25) and RLS1301 (C25) connectors for secure motor and controller connections. Its robust construction and extended service life make it an excellent choice for continuous operation environments.
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Product Description:
The RKL4785 is a dedicated motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It is intended to carry drive output currents and auxiliary signals between IndraDrive controllers and Rexroth synchronous motors in automated production cells. The cable is designed for continuous flexing in energy-chains and robot axes, so it keeps power transmission stable while mechanical stress is ongoing. Integrating pre-assembled connectors helps installers shorten downtime when replacing or routing cables in control cabinets and moving machine parts.
Mechanical endurance is defined by a bending life of 5,000,000 double strokes, allowing the cable to operate for extended duty cycles in high-speed carriers. During dynamic motion it must follow a minimum radius of 7.5xD; when the machine is at rest the radius may be relaxed to 5xD. The copper conductors are laid up according to bulk cable design code INK0607, a geometry that balances flexibility with cross-section stability. Direct current losses are limited by a conductor resistance of 0.78 ohm/km, supporting low voltage drop over long runs. For EMC compliance, the insulation system presents a distributed capacitance of 1.1 nF/m, reducing common-mode noise between converter outputs and motor terminals.
The multicore assembly contains 4 x 1.5 mm² shielded control pairs for brake and temperature signals alongside the main power cores. At the drive end it is terminated with a keyed RLS0727 (K25) plug, while the motor side uses an RLS1301 (C25) angled connector that mates directly with Indramat motor housings. The outer sheath is colored RAL 2003 and formed from a PUR compound that is adhesion-free and matt to resist oils and welding spatter. This combination simplifies routing through drag chains and allows quick replacement without sticking to adjacent cables.
