MDD025A-N-100-N2K-040ME0
The MDD025A-N-100-N2K-040ME0 is a compact synchronous servo motor in the MDD Synchronous Motors series from Bosch Rexroth Indramat. It is intended for use with digital drive controllers, where it converts commanded current into fast rotary motion for light-duty positioning stages, pick-and-place heads, and miniature spindles. Its mechanical interface, feedback arrangement, and thermal behavior make it suitable for closed-loop industrial axes. Because of its compact size, it works well in equipment where low moving mass and quick response are important.
In operation, the motor delivers a continuous standstill torque of 0.33 Nm while maintaining the standard balance grade for stable running. Under rated excitation, it reaches 10,000 rpm, which suits high-speed applications with low load inertia. Position data is provided through resolver feedback together with an integrated absolute encoder, so the drive can monitor rotor motion without external sensors. The housing is centered by a 40 mm pilot diameter, and torque is transmitted through a shaft with a keyway. This combination supports rapid acceleration and precise speed regulation in compact axis systems.
Power and feedback leads exit on the left side through a connecting cable with a coupling unit, which simplifies routing where space around the motor is limited. The motor uses frame size 025 with length code A, allowing it to fit into tight mechanical spaces while the housing dissipates heat passively during operation. Passive heat dissipation avoids the need for an external fan and keeps the surrounding layout simple. It is supplied without a blocking brake, so any static holding force must come from drive torque or an external clamp. The shaft is single-sided, and the lack of a shaft seal makes the motor better suited to clean installation areas.
