Product Description:

The MRS312F-2N-0130-NNNN belongs to the MRS Synchronous IndraDyn H Motors series manufactured by Bosch Rexroth Indramat. It is a water-cooled rotary servo unit intended for low-speed, high-torque axes in industrial automation, such as plastic extruders or large indexing tables where precise angular positioning is required. This model pairs with IndraDrive controllers to create a closed-loop system that maintains commanded velocity and torque even under fluctuating mechanical load.

At continuous load, the motor draws a rated armature current of 62 A while delivering 28.6 kW of mechanical output, which supports heavy-duty operation without thermal derating. Its low base speed of 280 rpm is achieved through seven pole pairs, allowing direct coupling to slow shafts without external reduction. The electromagnetic design provides a torque constant of 15.72 Nm/A, so torque rises linearly with drive current. Back EMF is characterized by a 930 V/1000 rpm voltage constant, giving the drive a predictable voltage demand and enabling regeneration during deceleration. Internally, 7.7 l/min of coolant flows through the stator jacket, extracting heat from the windings and supporting the step interference fit construction that locks the rotor on its 130 mm inner bore.

Short-term overloads can be handled up to a 180 A peak, delivering additional torque for acceleration profiles before the thermal model limits current. Copper losses are influenced by a winding resistance of 0.59 ohm, while magnetic energy storage across the slots is indicated by a crosswise inductance of 18.8 mH. A substantial rotor mass of 115.1 kg combines with a polar inertia of 1.093 kg·m² to smooth speed fluctuations during load impact, which benefits applications that need steady rotation under variable process forces.