RLB2-043GDB by Bosch Rexroth Indramat

The RLB2-043GDB cable is manufactured by Bosch Rexroth Indramat within the RLB Motor Power Cables series. It is a flexible power lead intended for routing energy and feedback lines between ctrlX DRIVE controllers and MS2(X) servo motors in automated machinery. With four main conductors, dedicated signal pairs, and an M40 motor-side connector, the cable supports organized routing between the drive and motor while keeping power and auxiliary circuits in one assembly. This layout helps limit separate cable runs on moving axes and supports cleaner installation paths inside compact equipment.

The power core of the RLB2-043GDB has a cross-section of 6.0 mm², so the copper area supports continuous transmission of up to 38.2 A without overheating when used within the specified ambient range. During dynamic motion, the jacket must flex repeatedly, so the minimum moving loop is limited to 7.5 × D, a radius that helps protect the insulation from shear stress. A halogen-free sheath made of PUR (Orange RAL 2003) guards the conductors against oils and coolants commonly found around machine tools. For power distribution, the design tolerates a line-to-line rating of 600/1000 V, allowing direct connection to drives that switch medium-voltage DC buses while meeting industrial clearance requirements.

Mechanical service life is supported by an endurance rating of 5,000,000 bending cycles, so the cable can travel continuously in energy chains during repeated motion. When stationary, the bend radius contracts to 5 × D, permitting tighter cabinet layouts without damaging the core. Auxiliary conductors are bundled as 4x1.0 + 2x1.5 mm², and these smaller wires can support brake release or temperature sensor functions independently of the main phases. The conductor system remains operational up to a sheath temperature of 80 °C, which is useful near motors and in routing paths exposed to accumulated machine heat.