Product Description:

The R43HCBA-R2-NS-VS-00 is a servo motor manufactured by Pacific Scientific as part of the R Servomotors series. Within an automated cell, it supplies closed-loop rotary motion for axes that must accelerate rapidly, settle quickly, and maintain steady velocity under varying load. By pairing with a suitable drive, the unit delivers the precise torque and speed profile needed in packaging lines, material-handling gantries, and electronic assembly stations. This operating profile is useful in systems that require repeatable starts, stops, and speed changes throughout short production cycles.

This model supplies a continuous stall torque of 3.9 Nm, a peak torque capability of 10.4 Nm, and maintains synchronous rotation up to 3700 rpm through its high-speed winding. The rotor’s reflected inertia is only 0.22 kg·m² × 10⁻³, so the motor responds quickly to command changes without requiring excessive control effort. A compact 4.25" square frame and a stack length of 3 inches let the housing fit into machinery with limited installation space. Rare-earth samarium cobalt magnets generate high flux while helping limit thermal rise, and the shaft seal protects the bearing cavity from contamination during operation.

When power is removed, a 100 V DC brake locks the shaft to protect suspended or vertical loads. Installation is direct because the flange follows the NEMA Face pattern, which avoids the need for adapter plates in compatible machine layouts. Rotor excitation relies on permanent magnets made from samarium cobalt, which tolerates elevated temperatures and resists demagnetization during peak loading. A Viton shaft seal provides chemical-resistant protection at the output end. Position data comes from a frameless resolver in transmitter type, size 21, and there is no secondary feedback channel, which simplifies cabling. Resolver feedback supports stable position tracking across changing speeds and load conditions.