R43HCAA-R2-NS-NV-80 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific R43HCAA-R2-NS-NV-80 is a servo motor from the R Servomotors series with a 4.25 inch square frame and a stack length of 3 inches. It delivers a continuous stall torque of 3.9 Nm and a peak torque of 10.4 Nm, and features a high speed winding type with a rated speed of 3700 RPM. This model includes a 24V DC holding brake and uses rare earth samarium cobalt magnets.
Internal Product Review
The R43HCAA-R2-NS-NV-80 is a Pacific Scientific servo motor built with a high-speed winding. Rated speed of 3700 RPM and peak torque of 10.4 Nm give the unit impressive acceleration and strong overload capability. A 24V dc brake and frameless resolver primary feedback make the servomotor an excellent choice for precise axis control.
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Product Description:
The R43HCAA-R2-NS-NV-80 is a servo motor manufactured by Pacific Scientific for the R Servomotors series. In automated machinery, it functions as a closed-loop actuator, translating command current from a drive into precise shaft motion for indexing, contouring, and tension control. Its standard housing allows installation inside sealed cabinets or on open machine frames without requiring special provisions. The unit integrates magnetic, mechanical, and feedback elements arranged for consistent performance across repetitive duty cycles.
It sustains a continuous stall torque of 3.9 Nm, meaning the shaft can hold that load indefinitely without exceeding the winding temperature limit. When acceleration peaks are required, torque rises momentarily to 10.4 Nm, providing headroom for overcoming static friction or process shocks. The high-speed winding delivers its rated mechanical output at 3700 rpm. At this reference speed, motor losses, airflow over the frame, and resolver accuracy are balanced. Dynamic response is supported by a rotor inertia of only 0.22 kg·m² × 10⁻³, so velocity commands produce fast yet stable changes without stressing the servo regulator.
The motor has a 4.25-inch square frame that aligns with standard gear reducers and extrusion mounts. A 24 V DC brake is installed to secure vertical or suspended axes whenever control power is off. The front flange uses NEMA face geometry, enabling direct bolt-on assembly without adapter plates. Position data comes from a frameless resolver that shares the shaft centerline, reducing coupling error. The rotor uses rare-earth samarium-cobalt magnets for high flux density and thermal stability. A three-inch stack length supports sustained high-speed operation while preserving the motor’s compact form. This arrangement allows the brake, resolver, and rotor to operate within the same housing without requiring external feedback hardware.
