Product Description:

The R43HENA-R2-NS-VS-00 is a servo motor manufactured by Pacific Scientific for the R Servomotors series. Designed for precision axes in automated equipment, it converts commanded current into controlled rotation while providing real-time position data to the drive. Its square frame allows direct mounting to gearboxes or driven loads, which helps simplify layouts in packaging lines, pick-and-place stages, and other motion platforms. This arrangement supports closed-loop motion systems that need consistent speed response and accurate positioning during repeated cycles.

The motor sustains a continuous stall torque of 3.9 Nm, which is the load it can hold indefinitely without overheating. For brief acceleration periods, it supplies 10.4 Nm to support quick index moves before thermal limits are reached. A rated speed of 3700 rpm matches the High Speed winding, so the motor is suited to applications that need rapid velocity changes. The 4.25-inch square frame uses an English mounting pattern that aligns with common NEMA hole spacing. The housing has a standard sealed style, and the mounting type is English, permitting direct fit with imperial hardware. The factory configuration omits a holding brake, so power-off holding must be provided by an external clamp. A 3-inch stack length balances output with installation depth while keeping the motor compact enough for tightly spaced machine assemblies.

Rotor inertia is 0.22 × 10⁻³ kg·m², enabling fast acceleration without requiring an oversized drive. Rare-earth magnets made from samarium cobalt increase torque per amp while resisting demagnetization at elevated temperatures. A Viton shaft seal helps keep lubricants inside and contaminants outside, which supports long bearing life. Position feedback comes from a frameless resolver size 21, which supplies rotor angle data to the drive without an auxiliary encoder. The standard housing protects the windings, and the reduced feedback hardware helps simplify cable routing and connection management.