THK KR3306A-0500 LM Linear Positioner With Ball Screw

The THK KR3306A-0500 LM Linear Positioner with Ball Screw delivers compact, high-rigidity linear actuation by integrating an LM Guide with a precision ball screw that has a 6 mm lead and a 500 mm stroke. As part of THK's KR33 Compact Series, it is designed for direct coupling to a NEMA 23 motor and four-way equal load support, while its sealed construction supports reliable performance in demanding environments. The unit can handle up to 2,608 lbs (≈11.6 kN) dynamic load and 20,200 N basic static load, with a basic dynamic load rating of 11,600 N. It achieves a maximum speed of 390 mm/s and offers repeatability of ±0.01 mm (Normal Grade) with a backlash of 0.02 mm. The screw shaft diameter is 10 mm, and the drive efficiency is approximately 90%, with maximum input speed 3,950 rpm and maximum input torque 1.244 N·m, starting torque 0.07 N·m. Applications span factory automation, CNC equipment, semiconductor machinery, robotics, packaging equipment, inspection systems, and material handling, with system integrators and machine builders relying on it for new automation projects, upgrades, retrofits, or replacement of worn linear motion assemblies.