Product Description:

The MDD090B-N-020-N2M-130GR0 synchronous motor is produced by Bosch Rexroth Indramat as part of the MDD Synchronous Motors series. Designed for digital drive controllers, it converts regulated current from an Indramat servo amplifier into controlled torque and speed for industrial positioning axes. This arrangement supports repeatable motion in packaging stations, material-handling robots, and CNC tooling spindles, where accurate starts, stops, and speed changes are required during continuous machine operation. Because the motor is intended for servo applications, the amplifier can regulate acceleration and deceleration closely on axes that cycle repeatedly throughout a shift.

The motor uses frame size 090 with length code B and fits a 130 mm centering pilot for accurate mounting. Standard balancing and a standard housing help keep vibration low when the rotor reaches its nominal speed of 2000 rpm. A continuous standstill torque of 7.2 Nm lets the axis hold load inertia during dwell periods without excessive heating. Command and feedback wiring enter from the right side through a sealed connector, which helps keep cable routing compact in crowded machine layouts. This side-entry arrangement can be helpful when the motor is mounted close to guarding or a machine frame. Position data is returned through Digital servo feedback (DSF), allowing the drive to maintain a high-resolution speed loop and stable axis response.

An integrated multiturn absolute encoder retains rotor position across power cycles, so the axis can restart without a homing routine after service interruptions. The motor is supplied without a blocking brake, so any power-off holding function must be provided by external hardware or drive-applied torque. The shaft uses a plain shaft design with a shaft seal, which supports direct coupling while helping keep lubricant in place and contaminants away from internal parts. That layout works well with pulleys, gearboxes, or direct-coupled loads inside enclosed equipment. The shaft is provided only on the drive side, which simplifies installation where rear clearance is limited.