RLB2-041FDB by Bosch Rexroth Indramat

Bosch Rexroth Indramat manufactures the RLB2-041FDB as part of the RLB Motor Power Cables series. This cable belongs to the Rexroth Cables product group and uses a basic design as a motor power cable for servo systems. In industrial automation, it transmits drive output from servo inverters to synchronous motors, carrying phase current and protective earth while maintaining electromagnetic compatibility within machine cabinets. It is intended for industrial power transmission rather than signal feedback, so the cable serves the motor supply path in multi-axis installations.

The conductor bundle has a cross-sectional area of 4 mm², giving current-carrying capacity suitable for medium-frame servomotors while limiting voltage drop over typical machine lengths. During installation, the cable may be laid in static runs with a minimum bend radius of 5 × D, and in cable chains it withstands repetitive flexing down to 7.5 × D. The sheath and conductor stranding are rated for 5,000,000 bending cycles, so the assembly supports continuous-motion axes used in pick-and-place gantries and other repeatedly moving equipment. A pre-assembled M40 motor connector is fitted, so the cable connects directly to the motor without a terminal box and keeps the connection format straightforward.

Conductor insulation remains stable up to +80 °C during operation and storage, which supports use in enclosed electrical cabinets and other warm industrial spaces. Flexibility is retained down to -30 °C when equipment is started in unheated facilities, and the same temperature limit applies during storage. The cable mates directly with ctrlX DRIVE converters and matches the pin layout required by MS2(X) servo motors. This compatibility supports standardized harnessing across multiple axis sizes and helps keep drive-to-motor connections consistent within the same machine platform. The matching interface also reduces the need for adapter wiring between compatible drive and motor components.