Product Description:

Pacific Scientific manufactures the R86HENA-R2-NS-NV-00 as part of its R Servomotors series. Classified as a servo motor, the unit converts electrical drive current into controlled mechanical rotation for indexing tables, gantries, and similar motion axes in industrial automation. The motor is supplied without an integrated holding brake and with a standard housing configuration, so stop-state holding must be provided by external clamping or drive torque. English-pattern mounting provisions allow direct interchange with existing NEMA-compatible machinery.

At stall, the motor can deliver 32.7 Nm of continuous torque, enabling steady force at zero speed without overheating. For short bursts such as acceleration or impact-load absorption, its peak capability rises to 66.6 Nm, providing a two-to-one overload margin. The rotor inertia is 6.57 kg·m² × 10⁻³, which supports rapid speed changes while still smoothing small load disturbances. Rated operation is specified at 3500 rpm, aligning the winding and thermal design with high-speed servo amplifiers. Magnets made from samarium cobalt provide stable flux density over a wide temperature range and resist demagnetization under the listed torque extremes.

The motor uses a 7.5-inch square frame with a 6-inch stack length, producing a compact but high-power form factor. Primary position feedback is supplied by a frameless resolver in size-21 transmitter format, allowing real-time loop closure without an additional encoder. The winding is the high-speed variant, which matches the 3500 rpm rating with lower inductance for quick current rise. The housing style remains standard for straightforward installation. Because there is no shaft seal, the motor should be used where contamination is controlled or coupled to sealed gearboxes and belt drives.