Product Description:

The MST161G-0100-FT-N0CN-D303 is a synchronous torque motor supplied by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. Designed as a frameless stator-rotor set, it is intended for direct-drive rotary tables, winders, and similar automation axes where high torque is required at moderate speed without gear reduction. Mounting the stator to the machine frame and the rotor to the driven shaft reduces the need for intermediate mechanical parts and increases positional stiffness for closed-loop motion tasks. Because the motor is built for direct drive, it can support smooth rotary motion in systems where backlash from transmissions would be undesirable. This arrangement also leaves more freedom around the axis for compact machine layouts and for center passages used by machine utilities.

During continuous duty, the motor delivers 157 Nm while drawing 33 A, producing 16.5 kW at a rated velocity of 900 rpm. For brief overloads, the drive can command up to 272 Nm to accelerate inertia or counter short load changes. Integrated KTY84-130 and SNM-150 DK sensors monitor winding and coolant temperatures so the control can limit current before thermal limits are reached. Power enters through axial leads on the stator side, and conductors of at least 6.0 mm² (AWG 10) help keep voltage drop low. Because these leads exit without a connector, they must be terminated in a junction box or harness that matches the installation environment.

An outer diameter of 180 mm and an axial stack length of 285 mm help the motor fit rotary tables while still leaving an 80 mm rotor bore for through-shaft utilities. The stator weighs 14.4 kg, which reduces loads on support structures and makes handling easier during assembly. Heat is removed by an open aluminum jacket that channels coolant around the laminations; with water cooling, the motor sustains nominal torque even in confined enclosures. Axial lead exit keeps cable runs within the machine envelope, and the open jacket supports more even temperature distribution across the winding heads.