Product Description:

The S24HMNA-HNNM-00 is a brushless servo motor built by Pacific Scientific within the S Brushless Motors series. Designed for precision industrial automation, this S24 frame unit converts controlled three-phase current into torque so that gantry axes, pick-and-place heads, or metering pumps can follow commanded profiles without mechanical brushes. Its four-stack winding arrangement, neodymium rotor, and electronic commutation support repeatable motion, and the lack of an integral brake keeps the motor simple for systems that rely on drive-based holding torque. Because the rotor is brushless, wear associated with mechanical commutation is avoided and maintenance demands are reduced in enclosed machinery.

A NEMA 23 mounting face allows direct installation in standardized motor brackets. The motor can deliver a continuous stall torque of 1.6 Nm, which allows it to hold a steady load at low speed or at standstill without exceeding its thermal limit. For short transients it reaches 4.94 Nm to support rapid acceleration within the frame size. Electromechanical conversion is characterized by a torque constant of 0.3 Nm/ARMS, so each ampere of phase current produces a predictable amount of steady torque. The phase resistance of 1.8 Ohms influences copper losses and current draw, while the winding inductance of 2.2 mH affects current rise time and dynamic torque response.

With a mass of 2.7 kg, the motor adds limited load to moving carriages while still providing thermal mass for continuous duty. A back-EMF constant of 0.19 VRMS/rad/sec links operating speed to generated voltage and helps keep the power stage within its operating range. Rotor position is reported through a Hall sensor, enabling six-step commutation when high-resolution feedback is not required. The motor also uses metric mounting threads and a motor-mounted MS connector, and it comes without a shaft seal or secondary feedback.