THK KR4620A-0590 LM Guide Ball Screw Actuator

The THK KR4620A-0590 LM Guide Ball Screw Actuator is a heavy-duty linear positioner that integrates THK's KR46 LM Guide with a precision ball screw, delivering a 20 mm lead and 590 mm stroke for fast, rigid, and precise linear motion. Designed for direct coupling to a NEMA 23 stepper or servo motor, it features a compact enclosed ball screw, four-way equal load capability, a 9.5 mm coupling bore, carriage dimensions of 105 × 53 mm, and a 46 × 46 mm mounting pattern, enabling up to 1,000 mm/s and 359 N of thrust. As part of THK's KR46 Series, the actuator measures approximately 840 mm in overall length, with an estimated motor capacity of 400 W, and is commonly used in CNC machinery, industrial automation systems, semiconductor equipment, packaging machines, robotics, material handling, and precision manufacturing requiring accurate positioning. This configuration is supplied with 3 photo gate sensors, and its design emphasizes high speed, low friction, high rigidity, and maintenance-friendly operation.