Product Description:

The R45FCNH-R2-NS-NV-00 is a servo motor manufactured by Pacific Scientific within the R Servomotors series. Integrated into industrial automation cells, it delivers commanded torque to accelerate or hold loads with encoder-based drive control. Its mechanical and electrical characteristics make it suitable for mid-power rotary positioning where repeatable speed and angle are critical.

This model can sustain a continuous stall torque of 5.7 Nm, allowing it to maintain position without overheating during static or low-speed operation. When rapid acceleration or short bursts are needed, it reaches a peak output of 15.1 Nm before current limits intervene. The rotor’s reflected inertia is only 0.31 × 10⁻³ kg·m², so the motor responds quickly to command changes while minimizing load-matching concerns. Torque density is aided by rare-earth samarium-cobalt magnets, which supply high magnetic flux without adding bulk. Connection to machine plates is handled through a NEMA face mount, simplifying alignment with gearheads or custom brackets. This unit is supplied without a holding brake, so static locking must be managed by an external mechanism or continuous drive current.

The housing measures 4.25 inches square, fitting easily into compact frames while clearing adjacent components. A stack length of 5 inches provides space for additional winding turns, increasing continuous torque without enlarging the frame cross section. Rotor position feedback is generated by a size 21 frameless resolver, providing analog sine-cosine signals for high-temperature environments where optical encoders are unsuitable. No secondary feedback channel is provided, so all commutation and servo loops rely on the primary resolver. The shaft end has no shaft seal, so the installation must be protected from fluid ingress where washdown or oil splash is present. Suitable guarding around the shaft opening can help prevent liquid and debris from reaching internal motor components during operation.