Product Description:

The S22HSNA-HFNL-02 is a 6-pole neodymium magnet brushless servo motor produced by Pacific Scientific as part of the S Brushless Motors series. The S22HSNA-HFNL-02 supplies closed-loop rotary actuation for positioning tables, small gantries, and electronic assembly axes in industrial automation. It integrates permanent-magnet torque density with electronic commutation so motion controllers can vary speed and direction precisely through current commands.

Its continuous stall capability is 1.0 Nm, allowing the shaft to hold load torque indefinitely without thermal overload, while short bursts can reach 2.64 Nm for acceleration. Phase inductance of 5.7 mH slows current rise enough to filter PWM ripple without compromising dynamic response, and the line-to-line resistance of 4.2 ohms sets the steady-state current draw at rated voltage. A torque constant of 0.3 Nm/ARMS links commanded phase current to output torque, giving the drive a direct current-to-torque relationship. Winding code H indicates the copper fill and insulation system around the stator, and the dual-stack lamination increases flux density along the 2-stack rotor core.

The mechanical profile is the NEMA 23 frame, which aligns with off-the-shelf gearheads and mounting plates while keeping total mass to 1.9 kg for low moving inertia on linear stages. Actual rotor inertia is 0.064 × 10⁻³ kg·m², which supports high-bandwidth positioning when paired with the voltage constant of 0.19 VRMS/rad/sec. Position feedback is furnished by Hall sensors for commutation plus an incremental encoder that provides 1000 pulses per revolution with line-driver outputs for noise-immune transmission to the drive. Power and signal conductors exit the rear housing as 18-inch flying leads, simplifying cable routing inside tight enclosures. The motor is supplied without a holding brake, and there is no shaft seal, so external measures are required if the axis must lock at standstill or operate in washdown environments.