Product Description:

The MKD025A-144-KG0-UN is a servo motor produced by Bosch Rexroth Indramat within the MKD Synchronous Motors series. It has motor size 025, motor length A, and winding code 144, which makes it suitable for compact axes that still require closed-loop speed and position control. The unit supplies repeatable torque for smaller gantries, indexing tables, and auxiliary robotic systems where fast feedback and moderate power density are needed. Its compact format allows it to fit into installations where mounting space is limited but accurate motion remains important.

Mechanically, the motor delivers a continuous standstill torque of 0.4 Nm, allowing stable low-speed holding without overheating. Its centering diameter of 40 mm aligns the stator accurately to adjoining machine frames, while the square mounting flange measures 54 mm for compatibility with size-54 gearheads and brackets. The enclosure has an IP65 rating, which helps keep dust and low-pressure water jets away from internal parts, and the installed shaft seal supports clean operation around the shaft. Positioning accuracy remains within ±8 angular minutes during continuous operation. The motor can operate throughout an ambient range of 0 to 40 °C without derating, and the insulation system supports the winding temperatures caused by frequent acceleration.

Electrical connectivity uses power and encoder connectors that are turnable within a range of 270°, which gives more flexibility when cable space is limited. Resolver feedback inside the housing supplies commutation and speed information, and the integrated electronics support multi-turn position detection of more than 4096 revolutions for applications that must retain position across many shaft turns. Insulation class F allows winding temperatures up to 155 °C, supporting reliable thermal performance during demanding motion cycles. Because the motor is supplied without a holding brake, the axis must rely on drive torque or an external locking device to remain stationary at standstill. The output uses a plain shaft, which is suited to backlash-free couplings and helps reduce torsional play.