Product Description:

The MST130C-0300-NS-N0RD-NNL1 is a permanent-magnet torque motor stator supplied by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. Designed for frameless installation, the unit delivers direct-drive rotary motion without mechanical transmission components, improving positioning accuracy and backlash behavior in automation tables, forming presses, and packaging axes. Its ten-pole-pair winding and compact lamination stack allow the machine builder to embed the stator inside the housing and pair it with a separate rotor for high torque density in limited space. Because the active parts are integrated directly into the machine structure, the axis can be built with fewer intermediate components and lower torsional compliance.

At its continuous operating point, when paired with a matching rotor, the motor delivers 6.8 Nm at 3000 rpm while the windings draw 5.3 A and produce 2.14 kW of mechanical power. The copper coils have a DC resistance of 1.6 ohms, which influences heat generation and current rise. A discharge capacity of 2.7 nF provides a path for high-frequency shaft-to-ground currents, supporting electromagnetic compatibility. The voltage constant is 0.103 V/min⁻¹ at 20 °C, so back-EMF rises in proportion to speed and can be tracked by the servo drive. Recommended power leads are 1.0 mm² so the selected cable can carry rated current without undue loss.

For dynamic events, the stator can withstand 40.0 Nm while accelerating to 3800 rpm and accepting momentary phase currents of 26.6 A. The magnetic design, with a torque constant of 1.28 Nm/A, converts additional current into higher torque, while only 0.17 kW of loss heat must be removed through the machine's cooling path. Thermal behavior follows a 47.0 min time constant, so temperature changes build gradually during varying load cycles. The 5.4 kg lamination mass stores heat between short duty bursts and helps smooth rapid thermal swings.