Product Description:

The MKD025B-144-KG1-UN is a servo motor manufactured by Bosch Rexroth Indramat as a member of the MKD Synchronous Motors series. Within industrial automation systems, the unit acts as an electromechanical actuator, delivering commanded motion to compact axes, feeders, and small gantries where consistent velocity and position are required. A drive controller supplies phase currents, and the motor translates them into mechanical rotation that can be coordinated with sensors and PLC logic.

The continuous standstill torque of 0.9 Nm is the steady load the rotor can hold without movement when rated current is applied, making it suitable for light fixtures and tooling plates. A square mounting flange measuring 54 mm outlines the face size that mates to gearheads or machine frames, while the centering pilot of 40 mm ensures concentric alignment between the motor and driven components. Because the shaft is a plain shaft, couplings or pulleys engage directly with no keyway, reducing backlash in precision stages. Winding code 144 indicates the resistance and inductance that the associated drive must match. Size class 025 and length code B complete the mechanical envelope, keeping the total mass and inertia low for rapid acceleration.

For holding and safety functions, the unit is supplied with a holding brake; this integrated brake clamps the rotor and can sustain up to 1 Nm of static torque during power-off conditions. Motor connectors are oriented on a rear swivel plate that is turnable through 270°, giving cable outlets flexibility inside tight enclosures. The single housing carries power and encoder connectors, and the encoder channel uses resolver feedback with absolute position detection exceeding 4096 revolutions, enabling instantaneous reference on startup. A shaft seal is fitted to limit the ingress of cutting fluids or dust, and the plain shaft supports motion tasks where axial clamping or sleeve couplings are preferred.