Bearings
Linear Bearings & Shaft
Linear Ball Screw Drive
Ball Screw Bearing Unit
Quick Code: BB-531417
BK25 THK Bearing unit
BK25 THK Bearing Unit – Fixed-Side Support for Precision Ball Screw Applications
The BK25 is a standardized bearing unit designed to serve as the fixed-side support for general ball screw drive systems. This housing unit combines precise engineering with robust construction to deliver reliable performance in linear motion applications.
Key Specifications:
- Inner Diameter: 25mm
- Bearing Configuration: 2x 7205 angular contact bearings in DF-set arrangement
- Design Type: Block design housing unit with labyrinth seal protection
- Preload: Factory-adjusted preload for optimal rigidity and precision
- Lubrication: Pre-greased with lithium soap-group grease for extended service life
- Material: Steel construction for durability and reliability
- Seal Type: Labyrinth seal design for effective contamination protection
Design Features:
The BK25 incorporates dual 7205 angular contact bearings arranged in a DF (back-to-back) configuration, providing superior load distribution and angular stiffness. The adjustable preload ensures smooth operation while minimizing radial and axial play, making it ideal for applications requiring high precision and repeatability.
Typical Applications:
- CNC machine tools and automated positioning systems
- Industrial automation equipment requiring precision linear motion
- General-purpose ball screw drive assemblies in manufacturing systems
- Applications requiring sealed, maintenance-free bearing support
The sealed and pre-greased design enables extended operation with minimal maintenance, making the BK25 an economical choice for demanding industrial environments.
