RKL4318 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4318 is part of the RKL Motor Power Cables series and features a total of eight conductors with an overall diameter of 18.5 mm. This cable uses a PUR jacket material and has a dynamic bending radius of 7.5 times the cable diameter with 5,000,000 bending cycles. It supports power wire cross-sections of 6.0 mm² with an operating voltage of 300/500 V and is equipped with RLS0723/K06 and RLS1201/
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Product Description:
The RKL4318 is a flexible motor power cable produced by Bosch Rexroth Indramat within the RKL Motor Power Cables series. It serves as the fixed link between an IndraDrive controller and a synchronous servo motor, supplying three-phase power and auxiliary signals in automated machinery. The cable is engineered for continuous chain use, so it maintains electrical integrity while moving with linear axes, handling routing forces common in production lines, packaging machines, and gantry systems.
The mechanical endurance of the assembly is demonstrated by its 5,000,000 bending cycles under energy-chain conditions. To achieve this lifespan, the cable accepts a minimum bend radius of 7.5xD / 5xD for dynamic and static routing, respectively. The conductors are stranded to the INK0604 bulk cable design and protected by a PUR outer jacket that resists oils and weld splatter. With 18.5 mm diameter, the cable carries three power cores of 6.0 mm² each rated for 300/500 V without corona breakdown. At 20 °C the copper loop presents 3.30 Ω/km, limiting voltage drop on long runs, while a distributed capacity of 0.8 nF/m minimises reactive current between phases.
The cable carries eight cores in total; the three power pairs are supplemented by two control pairs, bringing the conductor count to 8. The auxiliary pair for temperature or brake feedback uses cross-sections of 1.0 mm² on cores 5 and 6, while the interlock pair on cores 7 and 8 is sized at 1.5 mm². These control lines are rated for 300/300 V, letting them share multi-core harnesses without additional insulation barriers. Factory-installed terminations speed installation: the controller end is equipped with the RLS0723/K06 angled connector, and the motor end mates through an RLS1201/C06 bayonet plug that locks quickly under quarter-turn torque. Together, the defined conductor sizes, connectors, and bending capability allow the cable to interface Rexroth servomotors with precision drives in space-constrained chains.
Frequently Asked Questions about RKL4318:
Q: What is the bending cycle rating of the RKL4318 motor power cable?
A: The RKL4318 cable is rated for 5,000,000 bending cycles, supporting high durability in dynamic applications.
Q: What is the conductor resistance of the RKL4318 at 20°C temperature?
A: This model features a conductor resistance of 3.30 Ω/km at 20°C.
Q: What is the control wire operating voltage of the RKL4318 cable?
A: The control wire operating voltage for the RKL4318 is specified as 300/300 V.
Q: What is the overall diameter of the RKL4318 power cable from Bosch Rexroth Indramat?
A: The overall diameter of the RKL4318 cable is 18.5 mm, making it suitable for space-conscious installations.
Q: What type of jacket material is used on the RKL4318 cable model?
A: The RKL4318 is equipped with a PUR jacket material for its outer sheath.
