Product Description:

The R88GENA-R2-NS-NV-00-3 is a rotary servo motor manufactured by Pacific Scientific as part of the R Servomotors series. It is designed to serve as the electromechanical output stage in CNC tables, pick-and-place systems, and other motion axes that require precise acceleration, steady speed, and repeatable stops. By supplying tightly regulated torque to a coupled load, the motor allows the drive amplifier and controller to maintain programmed motion profiles in industrial automation cells.

During continuous stall conditions, the motor can develop 42.2 Nm without exceeding its thermal limits, while transient events can be handled up to 86.1 Nm of peak torque. An inertia of 8.61 × 10⁻³ kg·m² moderates acceleration so the drive can be tuned without oscillation. The rotor is rated for 1900 rpm, matching medium-speed machinery that needs stable velocity under load. A 7.5-inch square frame simplifies mechanical integration with gearboxes or direct-coupled shafts that use NEMA-style bolt patterns. Standard stator windings balance copper fill and heat dissipation, and the housing style is standard, so no liquid or forced-air cooling is required. The motor is built without a factory-installed brake, so power-off holding must be provided externally when needed.

Rare-earth magnets made from samarium cobalt provide high flux density while resisting demagnetization at elevated temperatures. Position and speed feedback is supplied by a frameless resolver of transmitter type, size 21, and no secondary sensor is fitted. The laminated core extends to an 8-inch stack length, giving the device its rated power density, and all dimensions follow the English mounting convention for compatibility with inch-based fixtures. There is no shaft seal, so contamination control must be provided by external machine components. The motor also uses a standard winding designation.