Product Description:

The F43HEMA-R4-KS-NV-00 is a brushless servo motor produced by Pacific Scientific as part of the F Servomotors series. Designed for positioning and speed control tasks in automated machinery, this motor converts drive current into precise rotary motion for indexing tables, gantries, and packaging axes. As a compact permanent-magnet servo motor, it fits closed-loop systems that require rapid response, stable torque output, and repeatable velocity regulation across changing loads. It is intended for servo applications where commanded speed changes must be followed cleanly during repetitive machine cycles.

In continuous stall operation, the motor can apply 32 lb-in of torque, allowing duty cycles where holding force is required without overheating. During rapid accelerations, the available peak torque climbs to 81 lb-in, giving additional headroom for overcoming inertia during short bursts. A torque constant of 5.4 lb-in./A ties produced torque directly to phase current, so the drive can predict motor response accurately. The back EMF follows a voltage constant of 64 V/Krpm for commutation tuning. With a frame width of 4.25 inches, a magnet stack length code of 3, and a standard configuration, the package fits tight spaces while still using a ferrite magnetic circuit. Mounting follows the English shaft standard, which helps it match gearboxes already used in North American equipment.

The motor has an IP65 protection rating that helps shield the stator windings from dust and water jets during operation. It is supplied with no shaft seal, so external sealing may be needed where fluid can reach the shaft. The rotor uses ferrite magnets, a material choice that balances thermal stability with a total mass of 16.6 lbs. That weight can help limit structural load on moving assemblies, and the moderate stack length supports installation where space is limited in enclosed machine zones.