EK / EF Series – Compact Precision Ball Screw Support Unit

The EK/EF series is our ball screw support unit developed for compact precision equipment, with EK as fixed end and EF as supported end. This series is designed for complete assembly interchangeability with equivalent series from brands such as HIWIN, THK, and PMI. Default configuration uses economical deep groove ball bearings, with angular contact ball bearings available upon request. Offered in C5 and C7 accuracy grades, suitable for compact CNC machine tools, precision measuring equipment, light automation devices, and other miniaturized applications.

Key Features

• Assembly Replacement – Direct replacement of existing same-series assemblies (fixed end + supported end) in customer equipment
• Flexible Bearing Options – Default deep groove ball bearings; optional angular contact ball bearings
• Dual Accuracy Grades – C7 for general transmission; C5 for precision positioning; flexible cost-performance ratio
• Pre-Lubricated – Grease applied before shipment; ready for installation upon delivery
• Compact Size – Fits screw shaft diameters from 5mm to 20mm, specifically optimized for compact precision equipment

Full Specifications