Product Description:

The PMB31D-20201-00 is a brushless servomotor manufactured by Pacific Scientific and assigned to the PMB Brushless Servomotors series. It is intended for closed-loop motion tasks where rapid acceleration and precise positioning are required, such as feeder stations, small gantries, and indexing tables. By pairing with a digital servo drive, this motor supplies regulated torque and velocity that match command profiles from an automation controller, making it suitable for multi-axis industrial platforms. Because it is brushless, routine operation avoids commutator wear and supports smooth response during repeated start-stop cycles.

The motor frame follows the NEMA Size 34 standard, so its face mounting pattern aligns with common 3.4-inch square housings used in compact machinery. Rotor position is detected by an internal Hall sensor, providing commutation signals to the drive without an external encoder. When energized at 240 VAC, the electromagnetic circuit can sustain a nominal stall current of 5.4 ARMS, which corresponds to the continuous current level supported by the thermal design. Mechanical power is transmitted through a shaft that uses a square key for rigid coupling to gears or pulleys without slippage. A length multiple of 1 indicates the shortest lamination stack available in this size class. This arrangement suits compact axes that need dependable torque at low speed.

For field wiring, the unit is delivered with flying leads with MS connectors, simplifying termination to drives or junction boxes while maintaining sealing at the motor exit point. This cable style also helps in compact installations where a rigid connector shell would take up more space around guards or brackets. The build code is standard motor, so no special windings, seals, or flanges alter the electrical or mechanical baseline. That keeps the configuration aligned with the basic version of the product. It is suitable for machine layouts that do not require custom sealing features or winding changes.