Product Description:

The MSK071D-0300-FN-S2-UG2-RNNN is an IndraDyn S synchronous servomotor produced by Bosch Rexroth Indramat within the MSK IndraDyn S Synchronous Motors series. As a closed-loop drive element, it converts electrical energy from a servo amplifier into controlled torque and speed for positioning axes and continuous-motion stations in industrial automation. It is suited for machine functions that require repeatable motion, steady speed regulation, and accurate response to changing load conditions. This type of motor is often used on packaging, handling, and process equipment where rapid indexing and smooth travel may be required on the same axis.

The unit is configured for liquid cooling, matching the FN requirement for forced coolant circuits that extract heat directly from the stator jacket. Its mechanical package uses an increased concentricity design, which reduces radial runout and improves coupling accuracy with gearboxes or belt pulleys. Liquid cooling also helps the motor maintain thermal performance in compact machine spaces where free airflow is limited. Motion feedback is supplied by an optical encoder that offers 2048 signal periods per revolution and supports the digital EnDat2.1 interface. That feedback arrangement supports accurate commutation and precise position evaluation in digitally controlled servo systems. Position retention during power loss is provided by an electrically released brake that develops 30 Nm of holding torque, allowing vertical axes to remain stationary without external clamps.

For plant environments that demand washdown resistance, the motor housing carries an IP65 protection rating and allows safe operation in ambient temperatures from 0–40 °C without derating. The sealed housing helps keep dust and water jets away from internal components during routine operation. The smooth plain shaft simplifies hub mounting and eliminates keyway stress concentrations, and the motor uses size 071 with length D for its frame format. Thermal endurance relies on class 155 insulation materials, giving adequate margin for cyclic overloads imposed by the 0300 winding set. The optical encoder also has single-turn capability for position feedback within one mechanical revolution.