Product Description:

The PMB31D-10200-02 is a brushless servomotor used on closed-loop motion axes in packaging equipment, pick-and-place stages, and other automated machinery. It belongs to the PMB Brushless Servomotors series and converts commanded current from a drive into proportional torque for repeatable positioning. This operating method lets the axis respond quickly to changing load conditions while maintaining controlled speed and position. It is also suited to systems that need smooth commutation and precise reversal during short indexing moves. Because it is brushless, the motor avoids the brush wear associated with conventional DC machines and supports consistent operation over repeated motion cycles.

The motor uses a NEMA Size 34 frame, so its 3.4-inch square flange can mount directly to standard gearboxes or adapter plates in compact machine layouts. When the shaft is locked, the windings draw a nominal stall current of 5.4 ARMS on a 240 VAC supply, which helps size cables and estimate thermal loading. Rotor position is reported by a resolver, providing analog sine-cosine feedback that remains reliable in high-temperature areas or electrically noisy environments. Power, feedback, and sensor conductors exit the housing as flying leads with MS connectors, allowing the motor to be disconnected quickly during service without handling individual pins.

The motor has a round shaft, which simplifies coupling to clamp hubs or set-screw pulleys when a keyway is not required. Its magnetic assembly uses a stack length multiple of 1, indicating the shortest stator configuration in the series and making it the lowest inertia option for rapid acceleration profiles. To protect the windings, a built-in PTC thermistor rises sharply in resistance as temperature increases, allowing the drive to reduce current before overheating occurs. That protection helps the motor tolerate demanding duty cycles where stalled or heavily loaded conditions can raise internal temperature quickly.