Product Description:

The R46SENA-R2-SS-NV-03 is a Pacific Scientific servo motor supplied within the R Servomotors series. As a brushless unit, it converts electrical power from a drive into controlled rotary motion for indexing tables, pick-and-place axes, and similar positioning tasks in automated equipment. It is suited to closed-loop motion systems that need repeatable starts, stops, and speed changes during normal operation. Its square frame and standardized electrical feedback support use in established Pacific Scientific motion systems for medium-torque applications.

This model delivers a continuous stall torque of 7.6 Nm, providing steady force at zero speed for tensioning or holding loads without overheating. During rapid accelerations, it can reach a peak torque of 20.2 Nm, enabling short bursts of high thrust to overcome inertial or frictional peaks. Rotor inertia is rated at 0.40 kg·m² × 10⁻³, which balances quick response with smooth speed regulation. That combination lets the axis resist load disturbances at standstill while still responding quickly when commanded to move. The motor has a 4.25" square frame, and its standard housing style keeps the overall length compact. An English mounting interface uses imperial pilot and hole dimensions that suit North American machinery and legacy fixtures.

The stator uses rare earth samarium cobalt magnets to maintain flux density over a broad temperature range, and the laminated stack measures 6 inches for additional thermal mass in continuous-duty service. The magnet choice also supports stable motor performance as operating temperature changes across typical industrial duty cycles. Position feedback is provided by a frameless resolver of transmitter type, size 21, which returns rotor position data to the drive. Mechanical holding must be external because the motor is built with no brake, and the lack of a shaft seal means any required sealing must be provided by the installation.