Product Description:

The R45GCAA-R2-NS-NV-80 is a servo motor manufactured by Pacific Scientific for the R Servomotors series. It is used on tightly regulated industrial axes where programmable controllers need repeatable speed and torque for positioning, sealing, or indexing tasks. The design couples a rare-earth rotor with resolver feedback so the drive can read the shaft angle in real time and maintain stable motion during speed changes. Its compact square housing also helps the motor fit directly onto common machine mounting surfaces in automated equipment.

The motor can sustain a continuous stall torque of 5.7 Nm, giving actuators the ability to hold a load at zero speed without excessive thermal stress. Dynamic performance benefits from a reflected rotor inertia of 0.31 kg·m² × 10⁻³, which helps reduce acceleration lag when the control loop commands rapid direction changes. Overall width is limited by a 4.25-inch square frame, and direct attachment is completed through a NEMA face mounting flange. The rotor uses rare-earth samarium cobalt magnets, which resist demagnetization at elevated temperatures and support stable magnetic performance. The housing is the standard style, the windings use the standard electrical pattern for this frame, and no shaft seal is fitted, so the installation should be protected from contamination.

During short bursts the drive may command up to 15.1 Nm of peak torque, allowing the axis to overcome inertial spikes or break static friction without increasing motor size. A 24 V DC brake is integrated so vertical or safety-related loads can remain stationary when power is removed. Primary position data comes from a size 21 frameless resolver, and there is no secondary feedback device, which keeps the feedback arrangement straightforward. The electromagnetic stack extends 5 inches along the shaft axis, supporting the magnetic path needed for the rated output while keeping overall length within typical enclosure depths.