RKL4712 Bosch Rexroth Indramat
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The RKL4712 is a motor power cable from Bosch Rexroth Indramat and comes from the RKL Motor Power Cables series. It features a cable core configuration of 4x10.0 plus 2x1.0 and 2x1.5 square millimeters, with a PUR jacket and cable diameter of 22.2 mm. The cable is rated for 5,000,000 bending cycles, has a capacitance of 1.0 nF per meter, and supports wire temperatures up to 90 degrees Celsius when fixed and 80 degrees Celsius when flexible.
Internal Product Review
The RKL4712 motor power cable from Bosch Rexroth Indramat is designed for demanding motion applications, featuring a durable PUR jacket and a core configuration of 4x10.0 + 2x1.0(StC) + 2x1.5(StC) mm² for power and signal integrity. Rated for 5,000,000 bending cycles and dynamic radius of 7.5 x D, this cable performs exceptionally well in high-flex installations. The combination of long service life and reliable connections makes it a solid choice for industrial automation.
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Product Description:
The RKL4712 is a motor power cable manufactured by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It links an Indramat drive controller to a synchronous servo motor. The cable carries three-phase power and control voltages needed for coordinated motion in automated cells and machine tools. It is intended for drive-to-motor connections where power transmission and auxiliary circuits must remain reliable during repeated machine motion.
This cable contains a core set arranged as 4x10.0 + 2x1.0(StC) + 2x1.5(StC) mm², so the main conductors deliver motor current while shielded pairs handle brake and sensor circuits. The overall outer diameter is 22.2 mm, which helps determine gland sizing and allowable routing space inside cable carriers. Its jacket is molded from PUR, a material that resists oil, coolant splash, and abrasion in moving-axis installations. Mechanical life is rated for 5,000,000 flex cycles, supporting repeated travel in energy chains. During motion, the minimum dynamic bend radius is 7.5 × D, which helps limit internal conductor strain during continuous flexing. The shielded auxiliary pairs help reduce electrical noise near the power conductors during axis motion.
Interface hardware is pre-defined: the controller end terminates with a Plug Connector RLS0721 (K10), while the motor side uses a Clamp Box RLK1201. This pairing keeps installation straightforward and maintains shield continuity between the drive and motor connection points. This arrangement supports enclosed cabinet entry at one end and secure termination at the motor housing at the other. Copper path resistance is 1.91 Ω/km for each 10 mm² conductor, which is useful when estimating voltage drop at full motor current. For stationary routing, the cable may be bent to a minimum radius of 5 × D. The insulation system supports conductor temperatures up to 90 °C in fixed sections and 80 °C in moving sections.
