Product Description:

The R43GENA-TS-M3-VS-02 is a servo motor produced by Pacific Scientific as part of the R Servomotors series. Designed for closed-loop motion axes in packaging, material handling, and general automation, the unit converts drive current into controlled rotary torque and speed for mechanical loads. Its frame, winding, and feedback options are factory matched so the motor can be installed directly on English-dimensioned machinery without extra adaptation.

The motor delivers a continuous stall torque of 3.9 Nm, so it can hold static loads without exceeding the thermal limits of the windings. For short accelerations, it can reach a peak output of 10.4 Nm, giving extra headroom for indexing moves or rapid reversals. At the rated shaft velocity of 1500 RPM, the electromagnetic design balances voltage, current, and back-EMF for steady operation on typical servo amplifiers. A reflected rotor inertia of 0.22×10⁻³ kg·m² enables responsive speed changes while limiting control-loop overshoot. The square 4.25″ mounting face follows NEMA size conventions, simplifying alignment with gearboxes or direct-drive couplings in compact equipment.

A rare-earth magnet system made from samarium cobalt supplies high flux density without increasing rotor mass, and the integrated Tachsyn transducer provides combined tachometer and resolver signals for velocity and position feedback to the drive. The front bearing is protected by a Viton shaft seal, allowing the standard enclosure to resist oil mist and particulate ingress. Because the motor is shipped without a holding brake, external mechanical restraints are required when power is removed; the absence of the brake helps keep the stack length at only 3 inches and minimizes axial space claims. The motor uses English mounting threads and comes with a standard winding and standard housing.