Bearings
Linear Bearings & Shaft
Linear Ball Screw Drive
Ball Screw Bearing Unit
Quick Code: BB-531437
BF25 THK Bearing unit
The BF25 THK Bearing Unit is a precision ball screw bearing support unit specifically designed for non-locating (free-side) applications in linear ball screw drive systems. This housing unit features a block design optimized to work in conjunction with fixed-side support units as part of THK's standardized BK/BF combination series.
Key Specifications:
- Inner Dimension: 25mm shaft diameter
- Bearing Configuration: 1x 6205 ZZ deep groove ball bearing
- Design: Block design housing unit for non-locating arrangement
- Material: Steel construction for durability and reliability
- Preload: Without preload - allows free axial movement on the supported side
- Seal Type: Without seal
- Scope of Delivery: Includes circlip for secure installation
Design Features:
The BF25 is engineered as the non-locating component of the BK/BF support unit combination series. Unlike the fixed-side bearing unit, this model utilizes a single deep-groove ball bearing without preload, permitting controlled axial movement and thermal expansion accommodation in ball screw drive systems. This complementary design ensures optimal performance when paired with a corresponding fixed-side bearing unit.
Applications:
Ideal for general ball screw drive systems in industrial automation, CNC machinery, and precision positioning equipment where a complete support unit configuration is required. The BF25 is particularly suited for:
- Industrial machinery requiring standardized bearing support solutions
- Ball screw assemblies requiring both fixed and free-side support
- Applications with thermal expansion considerations
- Systems where axial float is necessary for proper operation
