Kollmorgen M-403-A-21 Brushless PM Servomotor

The Kollmorgen M-403-A-21 Goldline brushless PM servomotor is a 230V servo motor from Kollmorgen’s Goldline family, designed for precise, repeatable motion in automated systems. The model data lists 3.0 and 8.3, with a stated 1500rpm value, and the BK designation indicates a brake-equipped variant, making it suitable for applications that require controlled holding torque. As a brushless permanent-magnet (PM) servo motor, it operates without brushes, which reduces maintenance and eliminates brush wear while enabling smoother torque delivery and higher efficiency during operation. This configuration supports accurate speed and position control in automated equipment where precise motion, repeatability, and quick response to control signals are essential. The M-403-A-21 designation identifies a specific size and performance tier within Kollmorgen’s Goldline line. Sourcing or replacement decisions can rely on the exact model number to confirm order accuracy and reduce mismatch risk with existing systems. The M-403-A-21 variant's brake suffix (BK) indicates a braking mechanism that can help maintain position when power is removed. The model number M-403-A-21 is used for ordering and inventory, enabling precise identification when purchasing spare parts or upgrades.