Product Description:

The F43GENA-R4-NS-NV-00 brushless servo motor is manufactured by Pacific Scientific and belongs to the F Servomotors series. It delivers closed-loop rotary motion for positioning tables, indexing drives, and light material-handling axes in automated machinery. Its English-unit shaft format and rear-face mounting pattern allow machine builders to attach the unit directly to compatible gearboxes or inertial loads without adapters. This arrangement supports installation on equipment built around imperial dimensions while maintaining a compact mechanical interface.

The motor sustains a continuous stall torque of 32 lb-in, providing constant holding force for axes that dwell under load. A frame width of 4.25 inches sets the motor’s cross-sectional footprint and affects spacing within the machine. With a torque constant of 10.8 lb-in/A, each ampere of phase current produces a predictable amount of output torque, simplifying current-loop tuning. The generated back EMF is represented by a voltage constant of 128 V/Krpm, which the drive uses when regulating sine-wave commutation. The enclosure has an IP65 rating, protecting the motor against dust and low-pressure water jets in industrial production areas.

During rapid moves, the rotor can deliver a peak torque of 81 lb-in, supporting short overloads without magnetic saturation. The assembly weighs 16.6 lb, keeping reflected mass moderate when the motor is coupled to belt or screw transmissions. The control electronics use commutation signals and provide no secondary feedback, which reduces the number of required connectors and cables. The motor has no brake, so static holding must be supplied by the drive or an external mechanical device. Ferrite magnets provide the motor’s magnetic field, while stack length code 3 indicates the selected active motor length. The motor uses a standard configuration and does not include a shaft seal, making it suitable for installations that do not require additional shaft sealing.