Product Description:

The MSS312H-0025-FA-N0CN-NNNN liquid-cooled synchronous motor is manufactured by Bosch Rexroth Indramat and belongs to the MSS Synchronous IndraDyn H Motors series. The unit is supplied as a frameless stator-rotor assembly. It integrates into machine frames where high continuous torque and precise speed regulation are required for plastic extrusion, metal forming, or high-capacity servo axes in general industrial automation.

With an enclosure rating of IP00, the motor is intended for installation inside a protected cabinet or directly inside the machine housing, so the machine must provide external shielding. Thermal management relies on an axial coolant port sized G 1/2, a supplementary radial port sized G 1/4, and an M30 × 1.5 mounting thread that seats the hose adapter. A conditioned water flow of 8.3 L/min helps keep the stator jacket at a uniform temperature while producing a pressure drop of only 0.5 bar across the cooling channel. An auxiliary KTY84-130 temperature sensor is embedded in the winding to report real-time thermal data to the drive controller. This feedback allows the control system to reduce current before the winding temperature becomes excessive.

The cooling circuit tolerates a maximum line pressure of 6 bar, providing headroom for elevated pump settings or long hose runs. Power conductors are routed through terminals sized for 16.0 mm² cable, helping to limit voltage drop during peak current demand. The motor connects to the machine frame through 14 tapped holes on each mounting face, arranged in a symmetrical pattern. Each mounting hole has an M8 thread with a depth of 16 mm, and a matching ground point with the same dimensions provides a low-impedance grounding connection. The symmetrical mounting pattern supports installation in multiple orientations without requiring a different frame interface.