Product Description:

The R82SSNA-NP-RM-NV-02 is a servo motor manufactured by Pacific Scientific and belongs to the R Servomotors series. As a rotary actuator, it converts controlled electrical power into precise mechanical motion for positioning axes, indexing tables, and other closed-loop movements used in automated machinery. Its frame size, magnet layout, and thermal safeguards align with industry requirements for repeatable, low-speed operation on production lines. The motor interfaces with matched digital drives supplied by the same manufacturer.

At its rated point, the motor draws 16.8 A of continuous current, a value used to size the inverter and conductor gauge so voltage sag can be avoided under peak torque demand. The output shaft turns at just 79 RPM, so high torque is delivered with minimal speed multiplication when coupled to direct-drive machinery. Magnetic excitation comes from rare earth samarium cobalt material, providing constant flux over a wide temperature range and resisting demagnetization during stall events. A standard housing encloses the stator and rotor, and this construction fits common NEMA mounting patterns while allowing natural convection cooling. Thermal overload is sensed by an internal overtemperature thermistor that signals the drive to reduce load or disconnect power before winding insulation is compromised.

Mechanical holding force is not provided; the unit is supplied without a holding brake, so external means must secure static loads when power is off. Position data is external because there is no primary feedback element inside the motor, so an external encoder can be selected to match the required system resolution. The output interface uses factory-assigned shaft and mounting, which ensures dimensional consistency with the series but requires verification against the driven component. The motor has no shaft seal, so the installation should avoid coolant splash or airborne contaminants unless additional shielding is added.