RL2-166MBB by Bosch Rexroth Indramat

The Bosch Rexroth Indramat RL2-166MBB is a motor power cable from the RL2 Motor Power Cables series. It is intended for second-generation IndraDrive and IndraDyn motors, carrying three-phase power conductors together with auxiliary signal pairs in one assembly. This arrangement supports automated machinery that must transmit motor power, brake-related circuits, and supporting signals without separate cable runs. The cable is suited to moving-axis installations where continuous flexing and torsional motion occur inside cable tracks or robot arms.

The cable is rated for 5,000,000 continuous bending cycles during cable-track operation, supporting repeated motion over long service periods. It also tolerates torsion up to ±30 °/m, which is useful where the cable twists as an axis rotates or changes direction. A minimum dynamic bend radius of 7.5 × D and a static bend radius of 4 × D allow routing in confined spaces while protecting the conductor bundle. The PUR jacket in RAL 2003 resists oil and abrasion, and the conductor cross section of AWG1/0 (53 mm²) helps limit voltage drop on longer runs. The cable uses four power cores plus four 0.75 mm² control pairs, and each conductor has PP insulation to maintain dielectric strength during repeated motion.

A molded M50 coupling provides a direct motor-side connection, avoiding the need for intermediate terminal blocks. The power conductors are rated for 600/1000 V, while the embedded signal pairs are rated for 450/750 V, so the assembly can carry both motor power and auxiliary circuits within the same cable body. A minimum insulation resistance of 20 M?/km at 20 °C helps reduce leakage currents that could interfere with low-level signal paths. Because the connection is direct, the cable preserves shielding continuity and keeps the interface compact at the motor end. It belongs to the Rexroth Cable product group and is intended for second-generation motor applications that require both flexible routing and durable electrical performance.