SN43HCYY-LNK-NS-01 by Pacific Scientific

The Pacific Scientific SN43HCYY-LNK-NS-01 is a high-performance hybrid stepper motor in the SN Synchronous Motors series, engineered for precision industrial automation tasks. Featuring a robust NEMA 43 frame size and a standard shaft seal, this motor achieves a substantial holding torque of 3085 oz-in (21.8 Nm), making it ideal for static-load applications that demand exceptional resistance to external disturbances. The combination of variable reluctance and permanent magnet rotor technology delivers accurate angular steps without the need for a complex feedback loop, while the heavy-duty, sealed housing protects internal components from contaminants. With a rated operational temperature up to 130 °C on the windings and ambient temperature tolerance up to 40 °C, this motor sustains reliable performance in harsh industrial environments. Its compact design and approximately 7.8 lb mass facilitate integration into automated systems requiring both power and durability.

The SN43HCYY-LNK-NS-01’s technical specifications are optimized for seamless integration into drive systems. The H-type winding arrangement, denoted by "H" in the model code, provides an optimal balance between torque generation and thermal management. Lead configuration is specified as 4 leads (CYY), supporting flexible phase energization schemes. Electrical connectivity is provided via a robust link-style connector (LNK) termination, ensuring secure signal and power delivery under dynamic loads. This model operates at a nominal rated current of 8.1 A/phase, and though it offers no built-in feedback (indicated by "NS"), it is well-suited to open-loop control strategies. The heavy-duty, sealed housing guarantees consistent performance, while the standard shaft seal prevents ingress of dust and moisture.

Operational performance of the SN43HCYY-LNK-NS-01 is characterized by precise stepping action and reliable static holding capability. The toothed rotor and stator design generate distinct angular increments, enabling repeatable positioning accuracy without incremental encoders. This motor sustains its 3085 oz-in (21.8 Nm) holding torque with minimal detent torque, providing smooth motion profiles that reduce vibration and noise. Thermal resilience is enhanced by a winding insulation system rated to 130 °C, which, in conjunction with an ambient operating range of Up to 40 °C, extends service life in high-temperature applications. The sturdy sealed housing and standard shaft seal ensure stable operation during continuous duty cycles, and the motor’s mass of 7.8 lb contributes to a favorable power-to-weight ratio.

Integration of the SN43HCYY-LNK-NS-01 into motion control systems is straightforward with compatible stepper drivers that support 4-phase configurations and 8.1 A current ratings. Its open-loop architecture simplifies control electronics, reducing system cost while maintaining precise step count tracking. Ideal target applications include precision positioning stages, CNC machinery, automated pick-and-place robotics, and packaging equipment where high holding torque and environmental resilience are critical. The combination of robust construction, standardized mechanical interfaces, and predictable performance makes the SN43HCYY-LNK-NS-01 a versatile solution for demanding industrial automation projects.