Product Description:

The PMB33F-20216-02 is a brushless servomotor manufactured by Pacific Scientific. It delivers closed-loop rotary motion for industrial automation axes where quick position updates and consistent stall torque are required. The motor pairs with a digital drive, and its integrated feedback and thermal protection allow it to fit packaging, material handling, and light machine-tool applications that use electronically commutated designs. That arrangement supports precise indexing, speed regulation, and repeatable positioning on axes that cycle frequently under changing loads.

The frame follows the NEMA Size 34 standard, so the face mounting holes and pilot diameter match common 3.4-inch square brackets. This mounting format suits common machine brackets and face-coupled assemblies in compact automation equipment. Internal copper and magnet loading yield a nominal stall current of 11.0 ARMS when the drive supplies up to 240 VAC. Rotor position is reported by a 4096 ppr incremental track, and commutation signals come from the same device, which is a Digital Encoder with commutation, giving the drive accurate speed and position data during low-speed moves and rapid direction changes. Power, feedback, and ground paths exit as Flying leads with MS connectors, allowing quick coupling to sealed cable sets while also permitting field replacement without opening the housing.

Thermal safeguarding is supplied through a PTC Thermistor embedded in the stator, so the drive can cut current before winding temperature reaches its limit. Mechanical power transfer is delivered by a shaft machined with a Square Key, which simplifies coupling to pulleys or gearheads while helping prevent slip under cyclic torque. The motor uses a 3-stack length, which gives it a longer active iron section for higher continuous torque within the same frame. This layout helps the motor sustain output in compact installations where a larger frame would not be practical. It is part of the PMB Brushless Servomotors series.