Product Description:

Pacific Scientific manufactures the R88HENA-R2-NS-NV-00 in its R Servomotors series. This servo motor is engineered to provide closed-loop motion control for indexing tables, pick-and-place axes, and other automation points that require consistent torque at variable speeds. Within an integrated drive system, the unit turns electrical energy into mechanical rotation so that controllers can position loads accurately and repeatably during continuous industrial duty. Its operating profile is suited to applications that need stable response during both start-stop movement and sustained running.

The electromagnetic core delivers a continuous stall torque of 42.2 Nm, giving machines steady holding capability without overheating at zero speed, while a peak limit of 86.1 Nm is available for brief accelerations or impact loads. When driven at its rated output of 3500 rpm, the rotor’s mass moment of inertia of 8.61 kg·m² × 10⁻³ supports responsive motion while helping the drive maintain smooth control. The rotor uses a high-speed coil set, which reduces electrical time constants so the drive can respond quickly to changes in direction. This combination supports fast cycle rates without making the motor difficult to regulate in normal servo applications.

The motor uses a 7.5" square frame, and the electromagnetic stack extends 8 inches, giving the unit a predictable mounting envelope for existing gearboxes or direct-drive couplings. Torque production is supported by rare earth samarium cobalt magnets, which retain strong magnetic flux at elevated winding temperatures. Position feedback is supplied by a frameless resolver size 21, allowing rotor angle detection in environments where vibration can be harder on optical feedback devices. The housing uses the standard style with English flange dimensions, and the motor is supplied without a holding brake, shaft seal, or secondary feedback.