Product Description:

The R45HEAA-R2-NS-NV-00 servo motor is produced by Pacific Scientific as part of the R Servomotors series. Designed for closed-loop motion axes in packaging machines, pick-and-place gantries, and similar equipment, the unit converts drive current into regulated mechanical rotation. Its electromagnetic design allows tight speed and position control when paired with a compatible resolver interface and servo drive, making the motor suitable for industrial automation cells.

Its continuous stall torque of 5.7 Nm indicates the steady load the rotor can hold without overheating, so the axis remains locked at rated current during dwell periods. The motor inertia is 0.31 kg m² × 10⁻³, and that low value permits rapid acceleration while still damping small load disturbances. A square frame measuring 4.25 inches on each side aligns with standard NEMA mounting patterns and eases machine layout. The active magnetic stack length is 5 inches, giving the rotor sufficient iron volume to support high flux without excess mass. For short bursts, the drive can command up to 15.1 Nm of peak torque, providing headroom for indexing moves, quick reversals, or overcoming static friction in mechanical transmissions.

Additional features refine how the motor operates in service. A 24 V DC brake is integrated so the shaft can be held when power is removed, which is useful on vertical axes. High energy density comes from rare-earth magnets, and the rotor uses samarium cobalt, allowing elevated temperature operation without demagnetization. The winding is the manufacturer’s high-speed variant, enabling higher base speeds when the drive supplies increased frequency. There is no shaft seal, which reduces drag and suits clean, dry environments. Inch-based mounting hardware and a standard housing style complete the configuration, and a frameless size-21 resolver supplies primary feedback without the need for optical encoders.