S33HNNA-HSNS-02 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific S33HNNA-HSNS-02 is a 6-pole Neodymium magnet brushless servo motor from the S Brushless Motors series. It features a NEMA 34 frame size, a continuous stall torque of 5.3 Nm, and peak torque of 15.3 Nm. The motor has a Hall Sensor as its primary feedback device and weighs 6.5 kilograms.
Internal Product Review
The S33HNNA-HSNS-02 is a 6-pole neodymium magnet brushless servo motor in a NEMA 34 frame. Continuous stall torque of 5.3 Nm and peak torque of 15.3 Nm give this unit strong servo performance and excellent overload capability.
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Product Description:
The S33HNNA-HSNS-02 servo motor is produced by Pacific Scientific within the S Brushless Motors series. Classified as a 6-pole Neodymium magnet brushless servo motor, it supplies closed-loop rotary motion for indexing tables, packaging axes, and similar industrial automation tasks. The design pairs rare-earth magnets with stator coils to create high torque density while fitting the NEMA 34 mechanical envelope often required in North American machinery. Its brushless construction also reduces wear associated with mechanical commutation and supports repeatable motion across long production runs.
At standstill, the motor can develop 5.3 Nm of continuous torque, allowing it to hold web tension or static loads without auxiliary gearing. During acceleration, the electromagnetic system delivers a peak of 15.3 Nm, supporting fast cycle moves before thermal limits intervene. The torque increases in proportion to winding current because of a constant of 0.9 Nm/ARMS, enabling the drive to predict output accurately from its current loop. Electrical dynamics are shaped by a phase-to-phase inductance of 6.3 mH, which filters current ripple and influences controller bandwidth, and by a line-to-line resistance of 2.1 Ohms, which contributes to copper loss at rated load. This impedance profile results from the H winding and the three-stack lamination arrangement. Position feedback is provided by Hall sensors, and the unit is supplied without a holding brake, so mechanical locking must be handled elsewhere.
Mechanical integration follows the NEMA frame standard with the specific NEMA 34 flange, simplifying interchange with existing brackets. That mounting format helps the motor fit common machine plates and couplings without custom adapter parts. System mass is moderate, and the housing weighs 6.5 kg, which eases manual handling during service. Dynamic response is linked to a rotor inertia of 0.48 kgm^2 x10^-3, balancing rapid speed changes with stable regulation. Back electromotive force scales at 0.56 VRMS/rad/sec, enabling speed estimation from measured phase voltage when needed. The shaft end is supplied without a shaft seal, so installations exposed to fluids must add an external barrier.
