Product Description:

The R43HCNA-NP-RW-VS-00 is manufactured by Pacific Scientific and belongs to the R Servomotors series. It is applied in industrial automation to drive axes that need precise velocity regulation and repeatable positioning, supplying rotational power to couplings, gearboxes, or direct-drive loads under closed-loop control. The motor uses a standard housing with a 3-inch stack length, which suits compact servo installations where space is limited and stable axis response is required.

This model delivers a continuous stall torque of 3.9 Nm, so it can hold a load at zero speed without exceeding thermal limits. Its square frame measures 4.25 inches on each side, allowing installation in machines that follow common motor envelope standards used on servo-driven indexing tables and transfer mechanisms. The rotor’s reflected inertia is only 0.22 kg·m²×10⁻³, supporting fast acceleration when paired with modern drives. A rated mechanical speed of 3700 rpm aligns with high-throughput production demands, while its peak torque reaches 10.4 Nm for brief overloads during indexing or rapid starts. No holding brake is fitted, and the motor is supplied without a primary encoder, so an external feedback device must close the control loop.

Mechanical integration is simplified by the NEMA Face mounting pattern, which centers the shaft accurately and matches common gear reducers. Contaminant ingress is limited by a Viton shaft seal, making the unit suitable for wash-down areas that use mild solvents and require better resistance at the shaft opening. Torque production originates from a Rare earth (samarium cobalt) magnet set, which maintains magnetic strength at high temperatures and supports compact motor geometry. The stator carries a High Speed winding that reduces inductance, so current can rise quickly when the drive commands rapid torque changes.