Product Description:

The servo motor identified as R45HENAR2NSNV00 belongs to the R Servomotors series manufactured by Pacific Scientific. It is a rotary actuator intended for closed-loop motion control in automated machinery, where precise speed and position regulation are required for indexing tables, pick-and-place heads, or coordinated axes. As a member of this series, the unit offers a compact 4.25-inch square frame that integrates readily with English-pattern flanges and delivers the consistent torque density expected from a high-energy rare-earth design.

The motor can maintain a continuous stall torque of 5.7 Nm, enabling it to hold or move loads without overheating during prolonged dwell periods. When rapid acceleration is demanded, the peak torque rises to 15.1 Nm, giving extra headroom for short bursts such as indexing moves. A frame size of 4.25 " square gives a mounting envelope that fits standard NEMA-style layouts. Rotor inertia is only 0.31 × 10⁻³ kg·m², so the drive responds quickly to command changes and imposes minimal load on the amplifier’s current loop. Because the unit uses a high-speed winding, the back-EMF constant is reduced, permitting higher rated speeds from a given bus voltage while minimizing voltage drop across the windings.

Mechanical construction supports a stack length of 5 inches, giving the additional magnetic volume needed to reach rated torque without enlarging the frame width. The magnets are made from rare earth (samarium cobalt), which maintains flux at elevated temperatures and resists demagnetization under high peak currents. The motor uses English mounting, matching tapped holes and pilot diameters common in North American machinery. A Standard housing style is provided, and the motor is supplied without a holding brake, so an external holding method is needed when back-driving must be prevented.