Product Description:

The MDD025A-N-100-N2K-040GD0 is a compact synchronous servo motor from Bosch Rexroth Indramat in the MDD Synchronous Motors series. Intended for digital drive controllers, it translates finely modulated current into precise rotary motion for indexing tables, light gantries, and small spindle drives. A standard housing, standard balancing, and a factory-installed shaft seal help protect the internal bearings from dust and splash. The frame size 025 with motor length code A keeps total mass low, enabling close mounting inside dense multi-axis arrangements common in semiconductor handling or laboratory automation. Its compact proportions also suit equipment where adjacent axes, sensors, and cable paths must fit within a limited envelope.

Its mechanical interface begins with a centering shoulder of 40 mm, giving repeatable alignment between the motor face and the machine plate. Power and feedback conductors exit on side B through a connecting cable with coupling unit, so the cable interface remains separate from the mounting bolts. During continuous stall, the rotor can hold 0.33 Nm of torque, which is adequate for low-inertia loads such as belts or miniature ball screws. Position information is provided by an onboard integrated absolute encoder, eliminating the need for homing at startup and allowing immediate closed-loop operation. This arrangement supports compact machinery that needs accurate motion control without adding separate external feedback hardware.

The motor is delivered without a blocking brake, which suits axes where the drive or external mechanics secure position during power loss. Motion control also uses resolver feedback, an analog sensing method that maintains accuracy over a wide temperature range. High-speed tasks are supported by a nominal speed of 10000 rpm, allowing ten thousand revolutions per minute under rated conditions. A plain shaft with no rear extension simplifies coupling to miniature pulleys or flexible couplings, and the absence of a side-B shaft end helps keep overall length short while minimizing overhung load on the front bearings. This layout is useful where compact couplings and short motor bodies are preferred around small moving assemblies.