Product Description:

The RKL4460 motor power cable is manufactured by Bosch Rexroth Indramat and belongs to the RKL Motor Power Cables series. It is a flexible, multi-core assembly intended to link drive controllers to servo motors in automated production lines. The cable carries the main three-phase supply as well as auxiliary circuits for functions such as brakes or temperature monitoring. This arrangement supports coordinated motion of linear axes, gantries, and rotary tables that operate under frequent acceleration in drag chain applications.

The cable contains four power conductors, each with a cross-section of 16.0 mm², so it can deliver steady current to medium-frame motors up to a rated voltage of 600 V AC. A circular outer diameter of 25.5 mm helps the assembly fit standard energy-chain separators while leaving room for movement inside the carrier. During installation on fixed machines, the minimum bend radius is 5 × D. Under repeated motion, the bend radius increases to 7.5 × D, which helps protect the copper stranding from fatigue. The four power cores are supplemented by two auxiliary pairs sized at 2 × 1.5 mm² for brake circuits, temperature signals, or similar control functions.

To extend service life in continuous motion, the copper strands conform to IEC 60228 Class 6, using very fine wires that resist cyclic stress in moving cable tracks. The insulation system has a mutual capacitance of 1.2 nF/m, which helps the drive maintain clean pulse-width modulation over long cable runs. Loop resistance of the power cores is limited to 1.21 Ω/km, reducing thermal rise when the axes draw sustained current. A tough outer sheath made from PUR resists oil, abrasion, and weld slag while remaining halogen-free to reduce corrosive gases during a fire. The jacket also remains suitable for drag chain use in enclosed machine spaces.