Product Description:

The R43HENA-TS-NF-NV-00 belongs to Pacific Scientific's R Servomotors series and is supplied as a brushless AC servo motor for positioning and velocity control in automated machinery. Its high-speed winding design allows rapid rotor excitation, while the absence of a holding brake keeps the package compact for applications that rely on drive torque rather than mechanical locking. A standard housing and English mounting dimensions let the unit fit conventional NEMA-style layouts on conveyors, pick-and-place axes, and packaging equipment. This configuration is commonly used where fast starts, stops, and repeatable motion matter more than static load holding after power is removed.

This motor produces a continuous stall torque of 3.9 Nm, letting it hold static loads without overheating, and it can deliver up to 10.4 Nm during short acceleration bursts. At the rated shaft speed of 3700 rpm, the high-speed winding helps limit resistive losses so thermal rise stays within normal operating limits. The rotor's reflected inertia of 0.22 kg·m² × 10⁻³ balances quick response with system stability, helping servo loops reach command position without excessive overshoot. The motor uses rare-earth samarium cobalt magnets, providing strong flux density that supports torque linearity across the speed range. With no brake, no shaft seal, and a standard housing, frictional drag remains low, and the English foot-mount pattern simplifies alignment to a base plate or mounting bracket. That balance supports quick response during indexing, speed changes, and repeated point-to-point moves.

A compact frame measuring 4.25" square and a laminated stack length of 3 inches keep the motor short enough for tight enclosures. Rotor position is sensed by a Tachsyn resolver, while a 1000 ppr line-driver encoder supplies fine digital position data to compatible drives. This combination supports both analog-style feedback and higher-resolution digital signal processing in motion-control systems. The separate feedback paths let the motor work with control systems that need both rotor reference information and incremental position tracking. The short body is useful where cable bends, guarding, or neighboring axes limit the available depth behind the mounting surface. The lack of a shaft seal makes the unit better suited to clean, dry areas where exposure to liquids or heavy contamination is limited.