Product Description:

The MDD025A-N-100-N2G-040PL0 is a small-frame AC servo motor manufactured by Bosch Rexroth Indramat as part of the MDD Synchronous Motors series. This model is a motor for digital drive controllers and is intended to convert commanded drive current into fast, repeatable shaft rotation for pick-and-place units, light gantries, and similar industrial automation axes. Its high nominal speed supports direct coupling to miniature belts or gearheads where limited space and low rotor inertia are important. The compact frame is suited to installations where low moving mass helps shorten response time and reduce the load on small mechanical transmissions. This layout is useful in small automation cells with limited mounting space.

Mechanically, the motor uses size code 025 and length code A, so the active stack is short and the mass remains low for quick acceleration. The short active stack also helps keep the motor compact in tightly spaced assemblies. Balancing is standard, and the centering flange is machined to 40 mm for concentric mounting. The connection hardware is on the left side, which can simplify plug-in wiring. At standstill, the stator can supply 0.33 Nm. During operation, the rotor reaches 10000 rpm, which suits high-frequency tasks such as spindle indexing. The unit is delivered without a blocking brake, so position retention must be provided by the drive or by the machine mechanics.

For signal transmission, the motor uses a keyed connector that carries power phases and resolver lines in a single shell. Combining power and feedback conductors in one housing keeps cable routing compact around densely packed axes. Angular position is reported through resolver feedback, allowing the drive to close position and velocity loops with high immunity to electrical noise. A factory-installed shaft seal helps protect the internal bearings against coolant splash and dust. The output shaft has a keyway so torque can be transferred through standard keyed couplings. Because the shaft end on side B is omitted, only the primary shaft extends beyond the front bearing seat, which reduces overall length and simplifies enclosure design.