Product Description:

The F46HSNA-R2-NS-VS-02 is a brushless servo motor produced by Pacific Scientific as part of the F Servomotors series. It delivers precise speed and torque control for automated positioning axes, pick-and-place heads, and similar motion tasks in industrial machines. When paired with a compatible drive, the unit converts electrical commands into rotational motion that can be tightly regulated under changing load conditions. Its brushless design avoids the mechanical wear associated with commutators and brushes, making it suitable for repetitive motion cycles and speed-controlled applications.

At standstill, the motor can develop a continuous stall torque of 61 lb-in, allowing it to hold position against static loads without overheating. During acceleration or transient load events, it can reach a peak torque of 155 lb-in, providing additional capacity for dynamic movements. Current-to-torque conversion is characterized by a torque constant of 5.5 lb-in/A, so the drive can calculate output torque from the commanded current. Back EMF scales with speed according to a voltage constant of 65 V/krpm. This value is important when selecting the DC bus and regenerative braking components. The IP65 enclosure protects the stator windings from dust and low-pressure water jets, allowing installation on machine frames that are periodically washed down.

The motor has a frame width of 4.25 inches, which fits common NEMA 42 mounting patterns while maintaining a manageable mass of 27.4 lb. A Viton shaft seal supports the housing protection by limiting contaminant entry where the shaft connects to a gearbox or belt drive. Internally, a ferrite magnet set with stack length code 6 establishes the magnetic circuit needed to produce the stated torque output. The rotor is supplied without a holding brake, so a load-side locking device is necessary when the application requires power-off retention. The motor has no secondary feedback device, so position sensing relies on the primary resolver or encoder supported by the drive. Power, feedback, and protective grounding connections must be routed through compatible motor cabling suited to the installed drive system.