MDD021A-N-100-N2K-032FB0
The MDD021A-N-100-N2K-032FB0 is a miniature synchronous servo motor produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. As a motor for digital drive controllers, it converts commanded current into precise rotary motion for compact pick-and-place axes, laboratory instruments, and other small automation systems. Its compact format supports machines that need quick acceleration, high spindle speed, and accurate position control in a limited installation space. The motor serves as a direct electromechanical interface between the drive electronics and the driven mechanism, which helps simplify short-axis designs.
A continuous standstill torque of 0.15 Nm allows the motor to hold light loads while current remains applied. The motor reaches a nominal speed of 10000 rpm, supporting rapid indexing and short cycle times when it is paired with a suitable inverter. A 32 mm pilot diameter helps center the flange during mounting and reduces radial offset at the machine face. Power and feedback cables exit on side B, which can keep wiring clear of the driven shaft and nearby moving parts. The output uses a plain shaft, allowing the machine builder to choose a coupling or pulley that matches the required stiffness and backlash.
For closed-loop control, the motor uses an integrated absolute encoder together with resolver feedback, giving the control system both position data and analog sine-cosine signals for high-speed operation. Electrical connections are made through a keyed connector, which helps prevent incorrect mating during installation. The motor is supplied without blocking brake, so any holding function must be provided externally when the axis is stopped. It also has no shaft seal, which reduces drag at the shaft end and suits clean, enclosed mechanisms. Standard balancing, a standard housing, motor length code A, and motor size 021 keep the package small for tightly spaced assemblies where rotating mass and envelope size must remain low.
