Product Description:

The R43HEAA-R2-NS-NV-00 is a servo motor produced by Pacific Scientific as part of the R Servomotors series. With its electromagnetic design, it interfaces directly with a matched drive for controlled motion. It supplies controlled torque and velocity to machine axes, conveyors, or indexing tables, where repeatable speed changes and position corrections are required during normal machine operation. The 3-inch stack length balances magnetic path length with overall motor mass, and the standard housing supports heat dissipation during sustained duty.

The motor has a continuous stall capability of 3.9 Nm, which is the torque it can hold indefinitely without overheating. For short acceleration bursts, it can reach 10.4 Nm, providing extra force during load changes and rapid starts. Rotor inertia is 0.22 kg·m²×10⁻³, and the low value helps shorten settle time after speed corrections. With a rated velocity of 3700 rpm, the winding set supports fast cycles while staying within thermal limits. Output power density is aided by rare-earth samarium-cobalt magnets, which maintain magnetic flux at elevated temperatures and support strong torque production in a compact motor package.

Mechanical integration is simplified by the 4.25-inch-square frame, which aligns with common inch-based mounting patterns used on North American machinery, and the mounting holes follow the specified hardware layout. Position holding during power loss is handled by a 24 V DC brake, so external clamping devices are not required. Feedback is supplied through a frameless transmitter-type resolver, size 21, providing rotor angle feedback to the drive without adding significant rotor mass, and no secondary device is included. A high-speed winding lowers inductance so current rises quickly under drive command. Because the housing is standard and there is no shaft seal, installation is intended for clean, dry enclosures where the surrounding machine provides protection from contaminants.