MDD025A-N-100-N2G-040GC0
The MDD025A-N-100-N2G-040GC0 is a compact synchronous motor released by Bosch Rexroth Indramat for the MDD Synchronous Motors series. It is classified as a motor for digital drive controllers. The unit converts command currents from a servo amplifier into mechanical rotation for lightweight axes, pick-and-place heads, or spindle tooling where very high speed is required. Its compact format suits installations where low inertia and limited mounting space are important.
This model delivers a continuous standstill torque of 0.33 Nm, giving modest holding force while keeping thermal rise low in static positioning tasks. During operation, it can reach a nominal speed of 10000 min⁻¹, allowing fast cycle times when paired with suitable gearing or direct-drive stages. This combination is better suited to fast, light-duty motion than to heavy static loading. Accurate commutation is supported by resolver feedback, which provides analog sine-cosine signals for fine angular resolution even under electrical noise. Mechanical centering is handled by a 40 mm pilot diameter, so the shaft seats concentrically to planetary gearboxes or couplings without extra sleeves. The power and feedback leads exit on Side A, simplifying cabinet layout when drives are mounted in line with the machine frame. Continuous power can be routed through the supplied connecting cable with coupling unit, and standard balancing keeps vibration within ISO G grade for small rotor masses.
The housing is the standard unventilated style and includes a shaft seal to limit dust or coolant ingress around the output end. A plain steel output interface is provided by the plain shaft, while the construction omits any second shaft extension in the standard arrangement without a side B shaft end. Because the motor is built without a blocking brake, applications that need static holding must rely on drive torque or an external clamp. Its frame code 025 and length designation A keep mass and inertia minimal, which helps the motor respond quickly in small-axis applications.
