Product Description:

The PMB33C-00201-02 is a brushless servo motor assembled by Pacific Scientific in the PMB Brushless Servomotors series. It is intended for CNC stages, packaging equipment, and conveyor zones that need repeatable motion in a compact footprint with low routine maintenance. In those applications, the motor works with an electronic drive that converts command signals into controlled shaft rotation for moving tooling, indexing product, or positioning workpieces with stable response.

Its mounting geometry follows NEMA Size 34, so the housing matches the widely used 3.4-inch square flange pattern found in many industrial motion systems. Continuous drive sizing is based on a nominal stall current of 3.8 ARMS, which helps the matching amplifier deliver steady torque without oversizing the current stage. Rotor position feedback is provided by a Hall sensor, supplying commutation signals during startup and low-speed operation. Power connections use flying leads with MS connectors, allowing the motor to connect to standard circular receptacles rather than fixed terminal hardware. A built-in PTC thermistor monitors winding temperature through its changing resistance so the controller can reduce output or stop the axis if heat rises too far.

The motor uses a flat shaft, which gives couplings, gears, or pulleys a simple drive surface without a keyed shaft arrangement. Its stack length multiple of 3 increases magnetic length compared with shorter motors in the same frame, supporting higher torque from the available envelope. This combination of shaft form and active length makes the unit suitable for compact axes that need dependable commutation, consistent thermal protection, and straightforward mechanical integration. The cable arrangement also helps when routing power and feedback conductors through tight machine spaces, because the attached leads can be guided before final connection points are fixed.