Product Description:

The R43GCAA-R2-NS-VS-00 is a brushless servo motor manufactured by Pacific Scientific and supplied as part of the R Servomotors series. Designed for closed-loop position and velocity control, the unit converts drive commands into precise rotary motion for packaging axes, pick-and-place heads, and other industrial automation stages. A frameless resolver provides primary feedback, allowing the drive to monitor rotor position without an external sensor assembly. The housing follows a standard configuration, which helps the motor fit inside compact machinery and keeps installation straightforward.

At the mechanical core, the motor can deliver a continuous stall torque of 3.9 Nm, allowing it to hold static loads without thermal drift under rated cooling. During steady operation, the shaft turns at a rated speed of 1500 rpm, which balances torque output with moderate operating speed in motion platforms. Dynamic response is supported by an inertia of 0.22 × 10⁻³ kg·m², so acceleration and deceleration commands can be followed with short settling times. The frame measures 4.25" square, and the interface follows a NEMA face pattern, letting machine builders attach the motor directly to standardized gearheads or adapter plates without custom brackets. This layout supports responsive motion while keeping mounting alignment simple.

Transient overloads are absorbed by a peak torque capacity of 10.4 Nm, giving additional margin for indexing moves and brief tension spikes. A 24 V DC brake is integrated to lock the shaft when power is removed, which is useful on vertical axes that must not drift under gravity. Magnetic flux is supplied by rare-earth samarium cobalt magnets, enabling high torque in a compact stack length while resisting demagnetization at elevated temperatures. Environmental protection is improved by a Viton shaft seal, keeping lubricant inside the housing and particulates out of the bearing cavity. The brake helps prevent unintended motion when the axis is idle, and the seal supports operation where dust or light contamination may be present around the drive end.