Product Description:

The PMB31D-00216-00 is a servo motor manufactured by Pacific Scientific and assigned to the PMB Brushless Servomotors series. In industrial automation, it converts drive commands into controlled rotary motion for axes such as pick-and-place arms, small conveyors, or indexing tables. Integrated position feedback and electronic commutation allow this model to operate with digital drives for precise speed, torque, and position control in repetitive duty cycles. This makes it suitable for motion systems that require smooth response and consistent repeatability.

This motor is terminated through flying leads with MS connectors, a wiring style that combines flexible pigtails with military-style plugs for straightforward connection. Rotor position is monitored by a digital encoder with commutation. Its incremental channels deliver a resolution of 4096 ppr, which supports fine interpolation and stable velocity control. The mounting face follows the NEMA Size 34 pattern, giving a 3.4-inch square flange that mates with standard gearboxes and adapter plates. During locked-rotor testing at 240 Vac, the winding draws a nominal stall current of 5.4 ARMS. This value indicates the current required at stall and helps match the motor to a compatible amplifier.

The unit is a standard motor, which means it uses stock windings and magnetic geometry rather than a custom variant. Output torque is transmitted through a flat shaft, a design that provides a simple surface for set-screw hubs while avoiding keyway stress risers. The motor has a stack length multiple of 1, which gives it the shortest core in the PMB lineup and helps keep inertia low for faster acceleration. Because the motor uses a brushless architecture, maintenance associated with commutator wear is eliminated and continuous-duty operation is achievable in clean manufacturing environments.