Product Description:

The PMB33C-10116-03 is a brushless servomotor produced by Pacific Scientific within the PMB Brushless Servomotors series. Built for closed-loop motion axes in packaging, electronics assembly, and small material-handling machines, the unit converts three-phase drive output into controlled torque and speed during rapid indexing and repeated positioning moves. Fast acceleration and low routine maintenance make it useful wherever repeatable motion is required on a compact footprint in tightly packed machine layouts.

Its frame meets NEMA Size 34 dimensions, so the pilot, bolt circle, and shaft height match widely used mounting patterns. Position feedback comes from a 4096 ppr incremental encoder, and with quadrature decoding the controller sees four times that count for finer speed regulation and position tracking. Under locked-rotor conditions, the winding can accept 3.8 ARMS at 240 VAC, a figure that affects amplifier sizing and cable selection. The built-in digital encoder with commutation supplies both incremental position data and electronic Hall signals, allowing immediate closed-loop control after power-up. A round shaft simplifies coupling to gearheads or pulleys and avoids keyway stress concentrations that can contribute to fatigue under reversing loads.

Power and feedback conductors exit as flying leads with AMP connectors, removing the need for bulky panel plugs and allowing harnesses to be trimmed to length during installation. For environmental and thermal protection, the motor is built with a shaft seal and PTC thermistor. The seal blocks fluid ingress at the output bearing, while the thermistor provides a temperature-related signal as winding heat rises. The motor uses a stack length multiple of 3, which increases continuous torque without changing the external frame or requiring a larger housing.