Product Description:

The PMB33C-20214-00 brushless servomotor is built by Pacific Scientific as part of the PMB Brushless Servomotors series. This motor provides closed-loop torque and velocity control for positioning axes, pick-and-place heads, and other industrial automation tasks that call for repeatable response. By combining a permanent-magnet rotor with electronic commutation, the model converts drive current into controlled rotary motion for NEMA 34 class machines.

Its physical envelope matches the NEMA Size 34 standard, so it can replace legacy stepper or servo frames without mechanical redesign. During locked-rotor conditions at 240 VAC, the winding draws 3.8 ARMS of nominal stall current, a value important when sizing the drive’s continuous output stage and thermal protection. Positional feedback is delivered by a 2048 ppr incremental encoder that also carries the three commutation tracks required by the drive. That sensor is presented to the controller as a digital encoder with commutation, allowing immediate phase alignment after power-up. Power and feedback conductors exit the housing as flying leads with MS connectors, reducing panel depth because large right-angle plugs are not required.

This model is supplied as a standard motor, meaning the magnetic stack, insulation class, and winding chart follow catalog values rather than customer-specific variants. The laminated core is built with a stack length multiple of 3, which raises torque output compared to shorter PMB versions without changing the mounting pattern. Mechanical coupling is handled through a square key shaft, letting torque transfer directly to pulleys or couplings with minimal slip. Within Pacific Scientific documentation, the device is listed under the PMB Series Brushless Servomotor product type, ensuring compatibility with the same family of drives and parameter files.