Product Description:

The R43GCNA-R2-NS-NV-00 is a servo motor built by Pacific Scientific as a member of the R Servomotors series. Designed for positioning and speed regulation tasks in automated machinery, this motor converts electrical input from a matched drive into controlled mechanical rotation for actuators, conveyors, or process equipment. Resolver feedback allows the drive to monitor rotor position and correct motion during closed-loop operation. Its square housing supports installation in multi-axis assemblies that require consistent mounting and reliable performance. This arrangement makes the unit suitable for indexing axes, feed mechanisms, and other equipment that depends on repeatable speed and position control.

At continuous stall, the rotor can deliver 3.9 Nm of torque, while brief acceleration or load transients can reach 10.4 Nm. A reflected inertia of 0.22 kg·m² × 10⁻³ lets the drive respond quickly and helps reduce overshoot in point-to-point moves. The motor reaches its rated mechanical output at 1500 rpm, which suits common gear ratios and linear stages. It uses a 4.25-inch square frame that fits NEMA 34 mountings. This combination supports stable low-speed torque and useful acceleration in compact motion systems. The winding set is the manufacturer’s standard design, and the housing supports cooling by natural convection in cabinet or open-air installations.

Rare-earth magnets made of samarium cobalt generate the motor’s flux density, supporting high torque density without enlarging the housing. The flange follows the NEMA Face pattern, and the active stack is 3 inches long, which helps keep overall depth short when the motor is coupled to gearboxes or pulleys. The short stack length also helps where space behind the mounting plate is limited. Position information is supplied by a frameless resolver, transmitter type, size 21, and no secondary feedback device is included. The motor is supplied without a holding brake, so external clamping or drive torque must maintain position when power is off. The shaft exits the housing without a seal, which is suitable where environmental ingress is not a concern.