Product Description:

The R88GENA-R2-NS-NV-00 is a servo motor produced by Pacific Scientific for the R Servomotors series. In automated machinery, it converts commanded drive current into controlled rotational motion so axes can be positioned or regulated under closed-loop feedback. By supplying high torque density without a holding brake or shaft seal, it suits applications where external clamping or environmental isolation are handled elsewhere in the mechanical design. This arrangement fits rotary axes that rely on separate machine components for holding force at standstill or for sealing against contamination.

Under steady load, the motor can deliver 42.2 Nm of continuous stall torque, meaning it can hold that level indefinitely without exceeding thermal limits. For rapid acceleration and short-term load shocks, the electromagnetic structure allows a peak of 86.1 Nm, giving the axis additional torque for overcoming inertia or friction spikes. The rotor’s reflected inertia is 8.61 kg·m² × 10⁻³; this value shows how quickly speed can change when torque is applied, so axis matching must account for the rotor mass. At its rated speed of 1900 rpm, the motor reaches a practical balance of back EMF, current, and thermal rise for continuous duty operation. Torque is generated with magnets made of rare earth samarium cobalt, a material that retains magnetic strength at elevated temperatures and supports high torque output in a compact motor body.

The mechanical form factor is a 7.5-inch square frame and a stack length of 8 inches, which gives the motor a predictable envelope for mounting inside machine frames. Connections follow English mounting conventions, making the motor suitable for equipment that uses inch-based hardware and spacing. Position data is returned through a frameless resolver in size 21 transmitter format, while no secondary feedback device is fitted. The standard housing protects the windings during normal industrial service, and the omission of a brake, shaft seal, and extra sensors keeps the assembly straightforward for systems that already provide those functions elsewhere.