Product Description:

The 3N63-100-1 is a permanent-magnet DC servomotor manufactured by Pacific Scientific and supplied in the Low Inertia PMDC Servomotors series. This compact unit converts electrical power into rotary motion for positioning axes, pick-and-place heads, or light conveyor sections that demand fast response and tight speed regulation within industrial automation cells. Its low-inertia design helps the shaft respond quickly to command changes during short indexing moves, frequent reversals, and other start-stop motion profiles where sluggish settling can reduce machine accuracy. Because the motor is compact, it can also be mounted on moving tooling where a larger housing could add unnecessary mass or restrict available travel.

Electrically, the motor is designed for a supply of 30 V and has a continuous current draw of 15.2 A. These values help establish suitable drive amplifier sizing, current limits, and wire selection for the power circuit. The motor has a continuous power dissipation capability of 125 W, and the frame uses air inlet and outlet cooling without internal baffles, so airflow must be maintained by cabinet fans or ambient circulation around the housing. Because the frame relies on through-air flow rather than liquid cooling, space around the inlet and outlet should remain open enough for air exchange. A rotor built with Neodymium magnets improves torque density while keeping rotor inertia low, and the skewed lamination stack helps smooth magnetic behavior during acceleration and deceleration.

A low torque-constant winding yields modest torque per ampere and favors higher speed ranges where voltage headroom is limited. The motor has no analog tachometer, so velocity feedback must come from an external encoder if the control loop requires closed-loop speed information. This arrangement lets the motion system use a feedback device matched to the resolution needs of the application. Overall mass is only 1.36 kg, which helps reduce moving load on carriages, slides, and other lightweight machine members. That lower mass is useful on compact axes where frequent direction changes, quick settling, and reduced reflected inertia are more important than very high continuous torque.