RKG4201T001 by Bosch Rexroth Indramat

The RKG4201T001 encoder cable is a pre-assembled transmission line produced by Bosch Rexroth Indramat within the RKG Encoder Cables series. Designed for closed-loop motion systems, it links motor-mounted encoders to Rexroth drive controllers so that incremental or absolute position data reaches the control cabinet without timing errors. The molded plugs on each end eliminate on-site termination and keep impedance consistent, which reduces installation time and maintains reliable feedback in dynamic, multi-axis machinery.

The cable core is built for chain or robot routing and is verified for 5,000,000 bending cycles, so the conductors can flex repeatedly without copper fatigue. An outside diameter of 8.8 mm fits common drag-chain cross-sections while still leaving room for cooling air. During motion the line may bend down to 7.5 x D, which keeps mechanical stress below the limit that would damage the insulation. Inside, a twisted-pair layout of 4×2 signal wires plus a power pair is used; each control conductor has a cross-section of 0.25 mm², providing low loop resistance without adding excessive stiffness. These signal pairs are insulated for up to 300 V, ensuring safe separation from neighboring power cables in mixed harnesses. Factory-crimped RGS1001/C01 and RGS1002/C01 connectors maintain the shield continuity through the backshells.

Consistent transmission quality is aided by a loop resistance of 83.0 ?/km, which minimizes voltage drop over typical axis lengths. A braided foil combination designated as Total Shield encloses the core bundle to block electromagnetic interference from inverters or servo drives. The outer jacket is colored RAL 2003 orange for visibility in machine interiors and is molded from PUR, a matte, adhesion-free compound that resists oils and machining coolants. When the cable is installed in fixed routing, a static bend radius of 5 × D may be used, and the INK0448 bulk cable designation permits simple stocking of un-terminated lengths for spare-parts logistics.