Product Description:

The PMB33E-00114-01 is a brushless servomotor manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series. It is designed for industrial automation where compact rotary drives must execute rapid indexing, velocity control, or coordinated motion. By combining permanent-magnet excitation with electronic commutation, the motor converts amplifier current into repeatable torque for pick-and-place modules, small conveyors, or packaging spindles that require accurate position feedback and high cycle rates. Its compact format also suits equipment where mounting space is limited but fast response is still required.

The motor follows the NEMA Size 34 frame standard, so its mounting face and pilot diameters match readily available brackets and gearheads. A flat shaft provides a milled surface that accepts setscrew couplings without the need for keys. Factory wiring exits as flying leads with AMP connectors, keeping the connection method compact while allowing secure termination to a matching amplifier. Rotor position is sensed by a digital encoder with commutation, so the controller receives incremental channels along with low-resolution commutation tracks for motor phasing. The encoder’s native resolution of 2048 ppr supports fine interpolation, which helps produce smooth velocity loops and accurate positioning in typical mid-band operating ranges.

At stall, the winding can sustain 7.4 ARMS from a 240 VAC supply, so the selected amplifier must support that current during locked-rotor conditions. A factory-installed shaft seal protects the front bearing and encoder cavity from oil mist and dust introduced by the host machine. A stack length multiple of 3 increases active copper without changing the frame envelope, which supports higher torque within the same general motor size. The motor is identified as a PMB Series Brushless Servomotor, and related components in that range use the same feedback protocol and connector style.