Product Description:

The R65HEAP-R2-NS-NV-00 is a servo motor produced by Pacific Scientific as part of the R Servomotors series. Designed for closed-loop motion control, it delivers precise rotary power to indexing tables, pick-and-place axes, and similar equipment within automated lines. The unit pairs with compatible drives that interpret its resolver feedback to maintain position accuracy under varying load demands. It is intended for machinery that relies on continuous feedback correction rather than open-loop indexing.

As a high-speed winding variant, the motor reaches a rated shaft velocity of 4300 rpm, allowing direct coupling to gearless loads that need quick cycle times. It can sustain a continuous stall torque of 13.6 Nm, so the drive can hold a static load during dwell periods. The frame measures 5.75-inch square, which fits inch-based mounting plates and keeps retrofit work minimal. This square footprint also simplifies alignment with existing inch-based machine structures. A rugged explosion-proof housing encloses the windings and magnets, permitting installation in hazardous vapor or dust zones. Torque production is supported by a rotor built with rare-earth samarium cobalt magnets, which provide high flux density and good resistance to thermal demagnetization.

For short accelerations, the motor develops a peak torque of 33.3 Nm, providing overhead for rapid starts or sudden direction changes. Position retention during power loss is handled by a factory-installed 24 V DC brake that clamps the shaft once the drive is disabled. That brake helps prevent axis drift when vertical or suspended loads are present. Dynamic response is helped by a rotor inertia of 1.26 kg·m² × 10⁻³, letting control loops command swift speed transitions with less overshoot. The magnetic stack length of 5 inches balances torque output against overall weight. A frameless resolver serves as the primary feedback device, and no secondary feedback, shaft seal, or non-metric mounting options are included.