Product Description:

The 4N63-100-2 is a permanent-magnet DC servomotor produced by Pacific Scientific and supplied within the Low Inertia PMDC Servomotors series. Its low-inertia rotor supports positioning and speed-control axes that need fast acceleration with limited power-stage overhead. In industrial automation, the unit converts regulated DC power from a drive into precisely metered mechanical torque so packaging heads, material-handling slides, or small gantry axes can follow command profiles without overshoot. The lack of an integral feedback package lets the machine use an external sensor that matches the required resolution. That arrangement also helps support short acceleration intervals and stable response in repetitive motion cycles.

It operates from 48 V DC and draws 14.1 A at rated load. A thermal resistance of 0.47 °C/W makes heat rise per watt easy to estimate, and the mass of 4.8 lb (2.2 kg) helps keep reflected inertia low in compact axes. Cooling uses air inlet and outlet with no baffles, so airflow passes straight through the housing to remove winding and magnet losses. This straight-through ventilation keeps the internal path unobstructed and supports steady heat removal during continuous operation. The motor is well suited to compact machines that have adequate cabinet airflow around the drive system.

Sensor selection remains open because the motor has no analog tachometer and no optical encoder, which reduces shaft hardware and internal wiring. The armature uses a medium torque constant that balances stall output with current response. Compatible drives can supply the needed bandwidth without exceeding the motor's voltage limit. This makes it easier to pair the motor with application-specific feedback hardware, including external encoder or tachometer arrangements placed elsewhere in the axis.