MHD115A-058
The MHD115A-058 is a servo motor manufactured by Bosch Rexroth Indramat as part of the MHD Synchronous Motors series. It is intended for direct coupling with digital drive controllers to deliver programmable speed and torque in automated assembly cells, pick-and-place gantries, and tooling spindles. By transforming controlled three-phase currents into rotary motion with high positional repeatability, the unit provides the electromechanical link between a motion controller's command profile and the mechanical load during continuous or indexing duty cycles. This operating role makes it suitable for coordinated axes that must start, stop, reverse, and follow frequent command changes without excessive lag between electrical input and shaft motion.
It mounts by means of a locating pilot with a centering diameter of 180 mm, so the stator housing seats concentrically against a machine frame and helps minimize radial runout. The rectangular flange follows the 192 mm bolt pattern, providing a rigid mounting interface that resists torsional shock during repeated acceleration and deceleration. During hold or low-speed operation, the motor can exert a continuous standstill torque of 32.0 Nm, allowing it to sustain static loads without an external brake. Frame code 115 identifies the cross-section size used in this series, and winding code 058 sets the electrical characteristics needed for proper operation with compatible drive modules.
The stator stack corresponds to motor length A, the shortest variant in the 115 frame, which helps reduce overall mass and rotor inertia for quicker acceleration. As a Servo Motor, the unit is intended for closed-loop operation in which the drive regulates current, speed, and position from feedback signals. This layout supports accurate velocity tracking, stable holding behavior, and repeatable motion in machines that rely on precise axis coordination. In automated equipment, that response supports contouring, synchronized transfer, and dwell periods where consistent shaft behavior is required from cycle to cycle.
