Bearings
Linear Bearings & Shaft
Linear Ball Screw Drive
Ball Screw Bearing Unit
Quick Code: BB-531449
FF15 THK Bearing unit
The FF15 THK Bearing Unit is a standardized housing unit designed for non-locating (free) side support in ball screw assemblies. This flange-design unit uses a deep-groove ball bearing to accommodate axial and radial loads while allowing controlled movement along the screw axis.
Key Specifications:
- Inner Dimension: 15mm bore size
- Bearing Configuration: Single 6002 ZZ deep-groove ball bearing
- Preload: Without preload – designed for free-side mounting
- Sealing: Double-shielded (ZZ) design for contamination protection
- Material: High-quality steel construction for durability
- Design: Flange-type housing for versatile mounting options
- Scope of Delivery: Includes circlip for secure installation
Design & Function:
As part of THK's FK/FF bearing unit combination series, the FF15 serves as the non-locating support unit and is typically paired with a fixed-side unit (FK or BK type) to create a complete ball screw support system. The deep-groove ball bearing configuration provides excellent radial and axial load capacity while maintaining the freedom of movement required for non-locating arrangements.
Applications:
The FF15 is ideal for:
- General industrial ball screw assemblies requiring standard support
- Machine tool linear motion systems
- Automation and positioning equipment
- Applications where the free-end bearing support is needed
- Systems compatible with standard ball screws
The FF15 delivers reliable, low-maintenance support for precision ball screw applications with standardized compatibility and proven performance.

