Product Description:

The PMB33F-10116-01 is a brushless servomotor developed by Pacific Scientific and positioned within the PMB Brushless Servomotors series. The unit converts electrical energy from matched inverters into controlled rotary motion for indexing tables, pick-and-place heads, and other precision axes in automated machinery. Its feedback, construction size, and winding build allow closed-loop torque production while limiting footprint, so the motor can deliver high dynamic response without requiring gear reductions or external encoders. This makes it suitable for motion systems that need repeatable acceleration and stable low-speed control during frequent start-stop cycles.

Its frame corresponds to the NEMA Size 34 standard, giving a 3.4-inch square mounting pattern that aligns with common U-frame brackets. Rotor position is reported by a 4096 ppr incremental disk coupled to a digital encoder with commutation, so the drive receives commutation alignment and fine velocity data. The combined feedback arrangement lets the controller track rotor position through the speed range without adding a separate commutation sensor. When the shaft is locked, the winding can draw up to 11.0 ARMS at 240 VAC, which sets the inverter’s continuous current requirement. Power and signal conductors exit as flying leads with AMP connectors, which eliminate mating plugs on the motor housing and simplify cable routing.

A factory-installed shaft seal reduces oil or coolant ingress along the output journal, supporting use in wet process lines. The motor uses a round shaft without keyways, allowing direct-coupled sleeves or adhesive-bonded pulleys for low-backlash drive trains. This arrangement supports couplings and pulleys that depend on concentric clamping rather than key-driven torque transfer. Internal lamination height follows a stack multiplier of 3, producing a longer magnetic core for higher continuous torque than shorter builds that share the same frame size. It is a PMB Series Brushless Servomotor with dimensions and an electrical interface consistent with other motors in the family.