Ball Screw End Support Unit Bearing FF6 FF8 for CNC Router Milling Machine. Multiple Precision Grades: Available in C7, C5, and C3 precision grades to meet diverse application needs. High Rigidity Design: Equipped with angular contact bearings and pre-pressure adjustment for stable rotation. Specialized Miniature Models: EK/FK4-6 models feature 45-degree contact angle bearings for high precision. Diverse Material Options: Support units available in Bearing Steel, Stainless Steel, and Carbon Steel. OEM and ODM Services: Full customization support available for specific model requirements. High Running Performance: Designed for smooth operation and high reliability in CNC applications. Flexible Thread Direction: Available in both Right and Left thread directions for various setups. Standardized Support Types: Includes EK, FK, FF types for fixed sides and BK, BF types for general use.