Product Description:

The R46SSNA-SS-NS-NV-02 servo motor is manufactured by Pacific Scientific within the R Servomotors series. Designed for closed-loop motion platforms, the motor supplies precise torque and velocity so automated machinery can position loads accurately, accelerate briskly, and stop repeatably. By integrating with a matched drive, it becomes a compact source of controlled mechanical power in conveyors, electronic assembly equipment, and other multi-axis motion systems.

Mechanical dimensions govern how the unit fits into a machine frame. The square mounting face measures 4.25" square, and the stack extends 6 inches along the shaft axis, giving the motor a medium length-to-width ratio suitable for tight panels. Continuous load capacity is established by the rated stall torque of 7.6 Nm, which the motor can hold indefinitely without thermal overload when properly cooled. Acceleration responsiveness is aided by a rotor inertia of 0.40 kgm²×10⁻³, limiting stored kinetic energy so the drive can reverse or stop quickly. Magnets made from rare earth (samarium cobalt) provide high flux density that supports this torque density while keeping overall size modest. The housing style is standard, simplifying mounting and cable routing.

The motor can reach a peak torque of 20.2 Nm, giving a short-term reserve for overcoming friction or accelerating heavy loads. Because the motor is supplied with no brake, the drive or an external clamp must hold the axis when power is lost. A lubrication barrier is absent since the shaft is specified with no shaft seal, so the installation area should remain free of spray coolant or airborne particles. Feedback is limited to the primary channel because there is no secondary feedback path, which reduces wiring but places all position sensing on a single device.