MDD021B-N-100-N2G-032MB0
The MDD021B-N-100-N2G-032MB0 is a compact synchronous servo motor built by Bosch Rexroth Indramat for the MDD Synchronous Motors series. Intended for digital drive controllers, it transforms commanded current into precisely regulated torque and speed for automated machinery, pick-and-place modules, and small tooling stations. Its narrow frame and high rated speed support installation where space is limited and frequent cycles are required. The motor works with Indramat drive amplifiers in multi-axis closed-loop systems, where current regulation and commutation are handled by the external controller. Its synchronous construction gives predictable rotor response during short positioning sequences, repeated starts and stops, and light-to-moderate inertial loads.
At stall, the rotor supplies 0.30 Nm of continuous torque without overheating. The maximum speed is 10000 rpm, giving the axis enough range for rapid index moves. A centering recess of 32 mm aligns the front flange accurately on the machine interface. Power and feedback connections are located on Side B, which helps keep the cable run short when the shaft faces the load. The motor uses a circular connector that accepts keyed plugs for correct wiring. This arrangement is useful in compact machine sections where the motor sits close to slides, indexing tables, or feeder mechanisms. Additional geometry includes frame size 021, length code B, a standard housing, and standard balancing for smooth operation.
The motor is delivered without a blocking brake, so load holding during power loss must be handled by the drive or by external clamps. Feedback is provided by resolver feedback, which sends analog sine-cosine signals to the controller for commutation and velocity control. Mechanical power is transmitted through a shaft with a keyway, and the design uses a single standard shaft end. The housing is supplied without a shaft seal, so the installation should be protected from liquid ingress. Because the brake is omitted, the mechanical package remains lighter and leaves braking strategy to the surrounding axis design.
