Product Description:

The 3N63-100-3 is a permanent-magnet DC servo motor built by Pacific Scientific for the Low Inertia PMDC Servomotors series. It serves dynamic positioning axes in packaging, electronics assembly, and small material-handling machines. A lightweight armature and rare-earth field set enable rapid start-stop cycles, letting the controller hold precise velocity and position throughout production. This response is useful on short indexing moves and repeated reversals where low inertia helps reduce settling time. The motor is intended for systems that need rapid acceleration without the mass penalty of a larger rotor.

Its electrical interface is rated at 60 V DC, matching low-voltage servo amplifiers on a shared 24–80 V bus. Baseline performance is specified at an ambient of 25 °C, so temperature drift remains predictable during standard operation. Thermal removal depends on air inlet and outlet with no baffles; the frame is open-ended so airflow clears heat without internal vanes. Because the housing relies on open airflow rather than internal baffles, cooling performance depends on a clear air path through the motor ends. For brief moves, the rotor delivers up to 7 times rated torque, providing high breakaway force for indexing loads. Flux is generated by neodymium magnets, which help maintain field strength over the operating range and preserve dynamic stiffness.

The winding system uses Class F insulation and is qualified to a maximum conductor temperature of 155 °C, allowing higher continuous currents before thermal limiting occurs. Pacific’s proprietary coil geometry uses a high torque-constant design, which raises the torque produced per ampere and supports fine current control. For speed feedback, the housing is machined with pilot surfaces, yet both the analog tachometer and optical encoder positions are supplied with no feedback devices attached, so users can add their own sensors or operate in sensorless modes when the drive supports that method. Those pilot surfaces provide a prepared mounting point for application-specific feedback hardware when external speed or position sensing is required.