Product Description:

The R43HMAA-R2-NS-VS-00 is produced by Pacific Scientific as part of the R Servomotors series. It is installed in closed-loop drive systems to deliver repeatable speed and position control on automated production lines. This motor converts electrical energy from a servo amplifier into torque at the shaft, allowing accurate indexing, tensioning, or point-to-point moves within industrial machines.

The servo delivers a continuous stall capability of 3.9 Nm, enabling it to hold loads without drift at zero speed. For rapid starts it can generate up to 10.4 Nm of peak torque, supplying the reserve needed for acceleration or shock events. Rotor inertia is held to 0.22 kg·m²×10⁻³, which limits stored energy and supports quick reversal of direction. Coupled with a rated mechanical speed of 3700 RPM, the high-speed winding sustains power output over a broad velocity range. Performance is further supported by rare earth (samarium cobalt) magnets that maintain magnetic flux at elevated temperatures. A 3-inch stack length and standard housing style provide a balanced envelope for thermal management and simple integration into compact machine frames.

The 4.25 inch square frame outline aligns with planetary gearheads and couplings that share the same bolt circle, while metric fasteners match international fixture plates. A 24 V dc brake locks the shaft when power is removed, protecting suspended or vertical axes. Contaminants are kept out by a Viton shaft seal, extending bearing life in coolant-rich environments. Motion feedback originates from a frameless resolver, transmitter type, size 21; no secondary device is fitted, which simplifies cabling and drive tuning. Because the design uses a high-speed winding, commanded profiles can be tracked without saturation. The motor remains classified as a servo unit within the Pacific Scientific portfolio, completing an electromechanical package optimized for responsive, repeatable automation.