Product Description:

The MST450E-0012-FH-N0KR-NNNN is a low-speed, high-torque synchronous motor produced by Bosch Rexroth Indramat for the MST Synchronous Torque Motors series. It operates as a direct-drive prime mover for rotary positioning stages and heavy-duty extruders inside automated production lines. By coupling the load directly to the rotor, the design eliminates gear reduction, minimizes maintenance, and keeps positioning accuracy governed only by the servo control loop. This arrangement also helps reduce backlash that can appear in drive systems that use intermediate transmission components.

Liquid cooling passages run through the stator jacket to carry away heat so the motor can continuously deliver a rated torque of 1400 Nm at a rated speed of 120 rpm. Under these steady-state conditions, it outputs 17.60 kW while drawing a phase current of 46.0 A. The short thermal time constant of 6.0 min means the winding temperature reacts quickly to load changes, allowing the drive controller to monitor thermal headroom with fine resolution. An inductance of 10 mH and a winding resistance of 1.1 Ω shape the current rise profile and influence copper losses that must be removed by the coolant circuit.

For short overloads, the electromagnetic core withstands a maximum torque of 3250 Nm, which can be produced when the drive supplies up to 125.0 A. With a torque constant of 30.40 Nm/A, the controller can estimate output torque from measured current during dynamic operation. The laminated steel stator weighs 92.0 kg, giving the assembly thermal inertia that buffers brief power surges. Power conductors with a 10.0 mm² cross-section terminate inside a right-hand-mounted terminal box, and the flange-mounted housing jacket integrates O-ring seals to route coolant without external piping. This layout supports rigid axial mounting and helps protect the windings from process contaminants while keeping the overall installation width compact.