Product Description:

The R33HENA-R2-NS-NV-02 is a rotary actuator manufactured by Pacific Scientific within the R Servomotors series. Developed for closed-loop motion axes, the motor converts drive current into precise shaft rotation for pick-and-place tables, indexing conveyors, and similar automated equipment. Its compact construction allows straightforward placement inside machine frames, and its electrical design pairs with compatible drives for vector control in space-constrained automation systems.

The unit has a continuous stall capability of 2.5 Nm, and it can withstand transient loads up to 6.54 Nm during rapid acceleration. The rotor is balanced for a rated speed of 6000 rpm, and the standard housing supports airflow for heat removal. A 3.25-inch square face matches a common English mounting pattern so the motor can bolt directly to widely used gearheads and brackets. Dynamic response is influenced by a reflected inertia of 0.093 kg·m² × 10⁻³, and magnetic flux is produced by rare-earth samarium cobalt magnets, which help maintain field strength over temperature changes while supporting the stated torque in a compact package. Because the motor has no brake or shaft seal, external load holding or environmental guarding is required where needed.

Position feedback is delivered by a frameless resolver, transmitter type, size 21, allowing the drive to close both velocity and position loops without separate sensors. The stator uses a high-speed winding so commanded frequency can rise without excessive copper loss, and the laminated core is built in a stack measuring 3 inches to keep the overall motor length short while still accommodating the required turns count. The housing remains the standard style, and the lack of a secondary feedback channel keeps the control architecture simple. The absence of a shaft seal also reduces friction, so the motor is best mounted away from areas exposed to liquid splash.