Product Description:

The R45GENA-R2-M2-NV-00 is a brushless motor built by Pacific Scientific for the R Servomotors series. Within integrated drive packages, the unit transforms controlled current from a digital amplifier into repeatable rotary motion so conveyors, indexing tables, and pick-and-place axes maintain commanded speed and position. The R series is intended for medium-torque automation tasks where fast response and compact dimensions are both required, making this model suitable for tightly grouped multi-axis assemblies.

Mechanical output is anchored by a continuous stall torque of 5.7 Nm, which is the steady-state load the motor can hold without exceeding its thermal limits. For short accelerations, it can reach a peak torque of 15.1 Nm, giving process axes the headroom to overcome static friction and inertia. Rotor inertia is only 0.31 × 10⁻³ kg·m², so speed changes occur quickly with minimal control overshoot. Torque density is aided by magnets made from rare earth samarium cobalt, a material that maintains magnetic flux at elevated temperatures. Position and velocity are reported through a frameless resolver (size 21), allowing analog feedback that resists electrical noise. The winding is supplied in a standard configuration, and the motor is built without a holding brake, which reduces mass in applications that rely on drive torque rather than mechanical locking.

For installation, the housing follows the series' standard style and presents a 4.25" square frame that mates directly to gearboxes or machine plates. The active lamination stack measures 5 inches long, which gives the motor the electromagnetic depth needed for rated torque while keeping the overall length manageable. Machines built on imperial hardware benefit from the English mounting pattern, which aligns with inch-based bolt circles. The shaft end has no shaft seal, so the coupling area should be protected from coolant or oil splash when the application requires it.