Product Description:

The MAC025A-0-WS-3-E/040-B-0/S006 is an AC servo motor manufactured by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Designed as a motor for analog drives, it converts current supplied by legacy analog amplifiers into rotary motion that can be regulated through closed-loop velocity feedback. Within automated machinery, this compact unit drives light actuators and indexing axes that require smooth speed adjustment without digital control infrastructure. Its operating characteristics make it suitable for smaller motion axes where controlled acceleration, steady rotation, and responsive speed correction are required.

The electromagnetic package uses winding code WS, which sets the motor’s voltage constant and allowable current for use with compatible drive cards. The motor size is 025, which supports installation in machinery with limited space and low load requirements. Its compact A length limits rotor inertia and facilitates rapid acceleration during short positioning cycles. Heat generated in the windings leaves the housing through natural convection, so no fan or external cooling circuit is necessary. Power conductors exit through a connector on side B, allowing the cable to be routed along the motor body when the shaft faces the load. This connector position can also keep the power cable away from adjacent couplings and moving machine components.

The motor has no blocking brake, so machines that require static holding torque must use external clamping or continuous servo current. Velocity information returns to the drive through a tacho feedback system with a second shaft end, providing an analog speed signal for closed-loop regulation. The tacho signal allows the connected amplifier to detect speed changes and correct deviations caused by variations in the applied load. The second shaft end permits an additional mechanical connection while the primary shaft remains coupled to the driven component. This arrangement supports legacy analog controller platforms that rely on direct velocity feedback rather than digital encoder communication.