Product Description:

The MDD090A-N-020-N2M-110PB0 is an AC synchronous servo motor built by Bosch Rexroth Indramat and assigned to the MDD Synchronous Motors series. It is intended for use with digital drive controllers and converts electrical command signals into controlled rotary motion for positioning or velocity loops in automated machinery. Its A-length frame and 090 size fit mid-torque axes such as small gantry drives, indexing tables, or feed rolls where repeatable speed and torque are required. This arrangement supports applications that cycle often and still need stable motion response during starts, stops, and speed changes. It is commonly used where consistent acceleration and repeatable stopping are more important than very high top speed.

At stall, the rotor can deliver 3.7 Nm of continuous torque, which is the maximum load the axis may hold indefinitely without overheating. During motion, the winding design supports a nominal speed of 2000 rpm, allowing the motor to cover typical operating ranges used in packaging, transfer, and feed systems. Position feedback is transmitted as Digital servo feedback (DSF), which sends high-resolution incremental and absolute data to the controller for closed-loop regulation. An integrated multi-turn absolute encoder tracks several mechanical revolutions and preserves position information after power cycling, so the axis can return to operation without a reference run in many setups. The motor is supplied without a blocking brake, which reduces rotating inertia and leaves holding functions to the drive or external mechanics when the load must remain fixed at standstill.

A centering diameter of 110 mm aligns the flange to gearboxes or machine plates, while the shaft uses a keyway for slip-resistant torque transmission. Power and feedback connectors face side B, which can simplify cable routing when the motor is mounted near guards, couplings, or other machine components. A shaft seal helps prevent oil ingress at the shaft exit point, and the rotor is balanced to the standard grade to limit vibration at speed. With the connectors grouped on one side and no second shaft end, the motor can fit more easily into compact installations with limited clearance around the drive train. This layout also keeps the rear of the motor less crowded, which can help when cable bends must stay within a short machine envelope.