MDD025A-N-100-N2K-040GA1
The MDD025A-N-100-N2K-040GA1 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Engineered for closed-loop operation with digital drive controllers, it converts commanded current into rapid rotary motion for small indexing tables, miniature gantries, and test fixtures that demand precise positioning in limited space. Its compact frame eases installation in crowded machine layouts while maintaining stable operation in automated environments. This arrangement suits axes that must start and stop quickly while keeping position control accurate.
Its flange has a centering diameter of 40 mm, and the rotor is factory balanced to the standard grade to minimize residual vibration at high speed. All power and feedback leads exit on Side A through a sealed connector, which simplifies cable routing inside compact enclosures and keeps the opposite side less crowded. At standstill, the motor can deliver a continuous torque of 0.33 Nm, and the windings are rated for a nominal speed of 10,000 rpm, enabling lightweight loads to accelerate quickly. This speed range is useful for mechanisms that need short move times rather than high continuous torque. Position data is provided by an integrated absolute encoder, giving the drive controller immediate knowledge of shaft angle without a homing move. A standard aluminum housing dissipates heat by natural convection, and the A length code indicates the shortest available active core to help reduce inertia.
For holding functions, a blocking brake built into the rear end develops 1.0 Nm of static torque, so vertical or parked axes can remain locked when power is removed. The motor uses a plain shaft and a shaft seal that help keep coolant or oil out of the bearing chamber. Because only the drive-side shaft is provided, Side B remains free for close-coupled gear units or other adjacent hardware. This layout leaves additional clearance around the non-drive end and supports compact mounting where surrounding mechanical parts sit close to the motor body. The sealed output arrangement also suits installations where splash or lubricant mist may be present near the coupling area.
