Product Description:

The R43HEAA-R2-NS-VS-02 is a servo motor built by Pacific Scientific within the R Servomotors series. It converts electrical energy into controlled rotary motion for closed-loop drives that position loads, index conveyors, or track web tension in automated machinery. The motor is suited to applications that need accurate response and repeatable motion during frequent starts, stops, and reversals. It can serve as the motion source for packaging equipment, indexing tables, and other automated axes that rely on closed-loop control.

Under continuous load, the motor holds 3.9 Nm at stall, providing steady torque for constant-load processes. During acceleration, it can reach a peak of 10.4 Nm, allowing short bursts of extra force without excessive heating. Speed regulation centers on a rated velocity of 3700 rpm, which supports fast motion in compact machine axes. The square frame measures 4.25 in on each side, and the rotor inertia of 0.22 kg·m² × 10⁻³ helps the axis change direction quickly while keeping control loops stable. Feedback is provided by a frameless size-21 resolver, and there is no secondary feedback channel. The motor uses a high-speed winding to limit iron losses at elevated frequencies, and the housing uses the standard form without optional cooling fins.

A 24 V dc brake is integrated so vertical axes can hold load torque when power is removed. A Viton shaft seal helps block oil and dust ingress, and the material resists common industrial solvents. Magnetic flux is supplied by rare earth (samarium cobalt) material, which offers high energy density and stable demagnetization resistance. The laminated stack extends 3 inches, which helps keep the overall motor length compact. English face mounting threads allow direct attachment to standard machine plates. This arrangement is well suited to quick-cycle packaging stations and pick-and-place heads.