Product Description:

The R43HEBA-R2-NS-VS-00 is a servo motor manufactured by Pacific Scientific within the R Servomotors series. This brushless unit converts electrical power into precisely controlled rotary motion for industrial automation axes, pick-and-place modules, and material-handling fixtures. As a servo motor, it is intended to be driven by a matched amplifier that interprets resolver feedback so that position, velocity, and torque can be regulated in real time.

Continuous stall torque is 3.9 Nm, indicating the steady load the stator can sustain without overheating when the shaft is locked. For rapid indexing, the electromagnetic package is sized for a peak output of 10.4 Nm, which can be applied for short duty cycles to overcome inertial loads. A rated speed of 3700 rpm supports fast-cycle machinery without step-down gearing. Dynamic response is helped by a rotor inertia of only 0.22 × 10⁻³ kg·m², so command changes are translated into acceleration with minimal lag. The mounting flange follows a 4.25" square frame outline, and the housing uses a standard style that fits into enclosures without special adapters.

Mechanical security during power loss is provided by a 100 V DC holding brake that locks the shaft until control power returns. Torque production is enhanced by magnets made from rare-earth samarium cobalt, which provide high energy density while resisting demagnetization at elevated temperatures. The laminated stack length measures 3 inches, giving the motor its torque-producing magnetic length within the designated frame. Environmental protection is aided by a Viton shaft seal that helps block coolant or dust ingress at the output end. Feedback for the drive comes from a frameless size-21 resolver, and no secondary feedback device is fitted. Installation uses the English mounting pattern, which suits machinery built around inch-based mounting dimensions.