Product Description:

Bosch Rexroth Indramat manufactures the MDD025B-N-100-N2G-040FA1. This model sits within the MDD Synchronous Motors series and is specified as a motor for digital drive controllers. With its 025 frame size and B length code, the unit targets compact servo axes where rapid acceleration and precise velocity tracking are needed. In industrial automation, it couples directly to ball screws, timing belts, or miniature gearboxes, providing reliable rotary motion from a controlled current source. This layout supports repeatable starts, short indexing moves, and steady low-speed positioning in small machine assemblies.

The mechanical interface begins with a centering diameter of 40 mm, ensuring accurate coaxial alignment to adjacent mechanics. Under continuous excitation, the stator yields 0.60 Nm of torque at standstill, keeping small loads firmly in position without overheating. The rotor is engineered for a nominal speed of 10000 rpm, so the same axis can shift from holding to rapid traverse without changing hardware. When supply power falls, a spring-loaded brake clamps the rotor and resists up to 1.0 Nm of static torque, preventing drift on vertical or indexing axes. Power and resolver leads exit on side A, which helps keep cable routing compact inside narrow cabinets. The standard aluminum housing dissipates thermal losses without auxiliary cooling fans.

Connection, sensing, and shaft options further support integration. A single keyed circular connector mates with molded cable assemblies, shortening installation time on high-volume machines. Position is reported through resolver feedback, allowing the drive to close the loop at high sampling rates even during rapid reversals. Output power is transferred through a plain shaft that arrives with no side-B extension, so couplings or pinions mount flush against the bearing shoulder. Dynamic imbalance is minimized by standard balancing, and the omission of a shaft seal eliminates drag at top speed while remaining suitable for clean, dry enclosures. The flush output arrangement also helps preserve a compact motor profile where surrounding machine space is limited.