MDD025A-N-100-N2K-040GE1
The MDD025A-N-100-N2K-040GE1 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Classified as a motor for digital drive controllers, it converts controlled three-phase power into accurately regulated rotary motion that positions fixtures, drives miniature spindles, or indexes conveyor lanes in automated production cells. Its small envelope and high rotor speed suit installations where rapid response and minimal inertia are important. The motor is intended for compact axes that need quick acceleration and stable speed regulation during short travel moves. In these applications, the paired controller adjusts current continuously so the axis can respond smoothly to changing load conditions. Because the frame is small, it can be placed close to tooling or transfer mechanisms without taking excessive machine space.
Its rated mechanical performance centers on a continuous standstill torque of 0.33 Nm, giving steady holding force without thermal overload during dwell periods. When rotation is commanded, the rotor can reach 10000 rpm, supporting high cycle rates on lightweight tooling. The mounting pilot is 40 mm in diameter, and standard balancing helps keep residual vibration low at that interface. Power and feedback conductors exit on the left side through a connecting cable with a coupling unit, aiding orderly cabinet wiring. Position information is returned by resolver feedback, which provides analog sine-cosine signals for velocity and angle control. This feedback method remains reliable in applications exposed to electrical noise and frequent starts and stops. The plain shaft has no second shaft end, which helps preserve the compact overall layout.
An internal brake provides 1.0 Nm of holding torque, allowing vertical or indexed axes to remain locked when power is removed. Protection against oil spray and dust ingress is provided by a shaft seal. The motor uses frame size 025 and the short A length code, which suit tight mechanical envelopes in miniature machines. The standard housing supports enclosed machine layouts where compact motor dimensions are required. This brake arrangement is useful on axes that must remain in place during a power loss.
