Product Description:

The MAC041B-0-BS-4-E/050-B-0/WI664LV is a servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It is intended for use with analog drive amplifiers where precise velocity and position control are needed on packaging lines, pick-and-place gantries, and other automated axes. The compact motor couples directly to gearboxes or belt pulleys and converts electrical commands from the drive into controlled rotary motion, which helps the axis respond smoothly during repeated starts, stops, and speed changes. Because it is built for servo duty, it is better suited to repeatable motion tasks than to simple fixed-speed operation.

Heat is removed through natural convection, so the housing dissipates thermal energy without forced airflow or liquid jackets. The motor has a frame size of 041 and a motor length of B, giving it a compact envelope suited to medium-duty servo applications. This cooling method keeps the unit self-contained and avoids the added complexity of auxiliary fan hardware. Power conductors leave through a connector on side B, which helps route cables away from the machine face in many mounting positions. Rotor position is returned by an incremental encoder with standard mounting that provides 256 pulses per revolution for closed-loop velocity regulation.

The motor has no blocking brake, so any load that must remain fixed during power-off periods requires external holding. In vertical or suspended-axis use, a separate mechanical restraint may be needed to prevent drift when drive power is removed. It is classified as a motor for analog drives, meaning commutation is handled by the paired analog amplifier rather than by a digital vector-control stage inside the motor. The sensor interface can also accept tacho feedback, incremental encoder, or absolute encoder devices when a different feedback arrangement is required by the control system.