RL2-542EBB by Bosch Rexroth Indramat

The RL2-542EBB motor power cable is supplied by Bosch Rexroth Indramat and belongs to the RL2 Motor Power Cables series. It is listed in the Rexroth Cable product group and uses the Basic cable design for straightforward routing inside machine tools and handling systems. Intended to feed second-generation Indramat motors, the assembly carries three-phase power and protective conductor lines within one jacket. In an automation cabinet, the cable forms a fixed or dynamic link between the drive controller and the moving axis. Because it contains no signal conductors, feedback lines must be routed separately when the application requires encoder data.

In repetitive motion applications, the cable is rated for 5 million bending cycles, indicating how many flex events the copper cores can withstand before fatigue becomes a concern. The conductor bundle uses a 4x L + 4x 0.75 mm² layout, with four load lines and four smaller auxiliary cores beneath the sheath. Each load core has a cross-section of 2.5 mm², which helps limit resistive heating and voltage drop over moderate distances. In drag-chain service, the cable can flex to a minimum dynamic radius of 7.5 × D without overstressing the insulation. Connection to the motor housing is made through a keyed circular fitting coded V (M40) for secure, strain-relieved tightening.

The outer jacket is made of PUR (Orange RAL 2003), a halogen-free material selected for abrasion resistance and coolant tolerance. Leakage capacitance is limited to 0.4 nF/m, which helps control inverter-related common-mode currents. With an outer diameter of 14.8 mm, the cable fits standard drag-chain separators while still allowing a static installation radius of 5 × D for stationary loops. This size also supports secure retention in common clamps and guides used along the cable path. The cable is compatible with second-generation motor drive sets without adapters, and the orange jacket makes it easy to identify in crowded machine spaces.