Product Description:

The MDD090A-N-040-N2L-130GA1 synchronous motor is produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. As a motor for digital drive controllers, it serves as the rotary actuator in positioning axes and speed-controlled spindles used in automated machinery. The motor uses a 090 frame size with the short A length code, which helps keep inertia low for fast acceleration and responsive speed changes. It also has a standard housing and standard balancing, allowing direct installation without added dynamic correction, while the shaft is built in a single-ended form without a side B extension for compact coupling or gearbox arrangements.

At the mounting interface, the centering pilot measures 130 mm, which helps the motor seat accurately against precision flanges. Power and encoder leads exit on Side A and connect through a keyed connector, which simplifies cable routing and maintains a sealed motor face. Under continuous stall conditions, the motor delivers 3.7 Nm of torque, and the winding supports operation up to a rated speed of 4000 rpm. This combination suits axes that need steady holding force at low speed as well as rapid motion during normal operation, and residual vibration is kept low to support stable encoder signals.

Position holding during emergency stops is handled by an integral blocking brake with 6.5 Nm of static torque. Feedback to the drive is supplied by Digital servo feedback (DSF), which provides high-resolution position data for closed-loop velocity and position control. The output uses a plain shaft, and the motor is supplied with a shaft seal to help limit contaminant entry around the shaft opening. This arrangement is well suited for applications that need reliable position retention, accurate motion feedback, and a protected shaft interface without requiring an external encoder or a separate brake assembly.