Product Description:

The PMB31D-00116-00 is a brushless servomotor manufactured by Pacific Scientific and positioned within the PMB Brushless Servomotors series. As a three-phase electromechanical actuator, it delivers controlled torque and speed for coordinated motion axes in automated cells, pick-and-place modules, and light machine tools. Closed-loop feedback embedded in the motor housing lets the drive regulate position without external transducers, while the copper-wound stator and permanent-magnet rotor provide the rapid acceleration required in modern assembly and packaging equipment. This balance of response and size suits multi-axis installations where cabinet space and cycle time are both limited.

Within the PMB Brushless Servomotors series, the frame follows the NEMA Size 34 standard, so the mounting face, pilot, and bolt circle align with widely available reducers and adapter plates. Power and feedback exit through flying leads with AMP connectors, allowing direct connection to existing harnesses rather than requiring proprietary plugs. Rotor position is sent to the drive as 4096 ppr incremental pulses, providing an angular resolution of 0.088° for tight velocity loops. When energized from a 240 V AC bus, the motor can hold continuous stall torque at a phase current of 5.4 ARMS.

The sensing hardware is a digital encoder with commutation, so the same device supplies both incremental counts and phase signals without separate Hall tracks. A flat shaft end provides a broad surface for set-screw or clamp couplings, which helps reduce slippage during rapid reversals. This is a standard motor, so its winding data and magnet grades follow the normal values used for this model. A stack length multiple of 1 means the motor uses the shortest magnetic core in this family, which helps reduce rotor inertia and supports quick acceleration.