RLB2-041DBB by Bosch Rexroth Indramat

The RLB2-041DBB cable is produced by Bosch Rexroth Indramat within the RLB Motor Power Cables series. This basic design power cable links the output terminals of a ctrlX DRIVE controller directly to an MS2(X) servo motor. Its purpose in industrial automation is to deliver drive current and auxiliary voltage in one assembly, reducing panel wiring and ensuring that motion axes receive stable power during dynamic positioning cycles.

The core of the cable contains four power conductors sized at 4 x 1.5 mm², and each lead can carry the phase current used by small to mid-frame servo units. In the same jacket, four auxiliary leads sized at 4 x 0.75 mm² accommodate brake release or temperature sensor circuits, forming a 4×L + 4×0.75 mm² cabling pattern. Termination is performed with the SPEEDCON quick-lock connector system on the motor side, while the drive end uses a compact V (M40) threaded coupling that mates with the power module. The assembly is rated for 5,000,000 flexing cycles, so it can be routed through energy-chain tracks without exceeding life expectations in continuously moving gantries, and the direct motor-to-drive connection eliminates intermediate terminal blocks.

During motion, the cable can bend to a minimum radius of 7.5 × D, and when fixed in place the radius may be reduced to 5 × D. These limits help prevent conductor fatigue in tight routing spaces. The basic sheath construction and PUR insulation identify it strictly as a power cable, so separate signal lines remain necessary for encoder feedback. It belongs to the ctrlX DRIVE automation platform, and its pinout matches Bosch Rexroth MS2(X) motors, allowing toolless hookup in conveyors, pick-and-place axes, or palletizers that demand frequent direction changes.