RKL4539 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4539 is part of the RKL Motor Power Cables series and features a bulk cable type INK0667 with a cable diameter of 30.8 mm. It has a power conductor cross-section of 35.0 mm² and an auxiliary conductor cross-section of 1.5 mm². The cable supports a maximum wire temperature of 90 °C when fixed and uses a plug connector type INS0382/C35.
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Product Description:
The RKL4539 motor power cable is produced by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It is intended to link servo drives to synchronous or asynchronous motors in automated machinery, providing three-phase power and protective earth conductors in one jacket. By matching the electrical and mechanical interfaces used throughout Rexroth drive systems, the cable enables quick installation between a cabinet-mounted inverter and a motor-side terminal box while maintaining noise immunity required for industrial automation environments.
Mechanical layout starts with the bulk cable type INK0667, which defines jacket material and shielding appropriate for drag-chain routes. The internal geometry follows the 4x35.0 + 2x(2x1.5) StC arrangement, combining four power cores and paired control conductors for temperature sensors or brakes. Each power core features a section of 35.0 mm², supporting high current delivery with limited voltage drop over long runs. Overall outer diameter is 30.8 mm, so gland and conduit sizing must account for this dimension when planning cabinet penetrations. Typical line-to-earth capacitance reaches 1.2 nF/m, a value that influences drive output filter selection to keep common-mode interference within limits.
The conductor loop resistance is 0.554 Ω/km, enabling accurate fault calculations for protective devices. Fixed routing can tolerate wire temperatures up to +90 °C, while dynamic cable chains are limited to +80 °C to preserve insulation life. A minimum static bend of 5 x D and a dynamic limit of 7.5 x D protect the stranded copper from fatigue. The cable attaches to motors through Terminal Box Size 4 clamps and mates with the drive via the INS0382/C35 connector, carrying three power cores plus PE and auxiliary 1.5 mm² sensor pairs.
Frequently Asked Questions about RKL4539:
Q: What is the cable construction specification for the Bosch Rexroth RKL4539 power cable?
A: The RKL4539 cable is constructed as 4x35.0 + 2x(2x1.5) StC, providing separate cores for power and auxiliary functions.
Q: What are the minimum bending radii for the RKL4539 cable in fixed and flexible installations?
A: The minimum bending radius for the RKL4539 cable is 5 times the diameter if fixed, and 7.5 times the diameter when flexed.
Q: What is the cross-sectional area of the power conductors in the RKL4539 cable?
A: The RKL4539 motor power cable has a power conductor cross-section of 35.0 mm².
Q: What plug connector does the Bosch Rexroth RKL4539 cable use?
A: The RKL4539 is fitted with an INS0382/C35 plug connector for efficient and secure electrical connections.
Q: What are the maximum allowable wire temperatures for the RKL4539 cable under fixed and flexible conditions?
A: The maximum wire temperature for the RKL4539 is +90 °C when fixed and +80 °C when flexible.
