LME..UU..AJ Series

LME..UU..AJ series adjustable linear ball bearings - Precise Clearance Control

The LME..UU..AJ adjustable linear bearings are designed to provide controlled internal clearance, which is critical for applications requiring high precision and rigidity. This series addresses the challenge of managing potential dimensional variations in shafts and housings, which can lead to reduced system performance. By integrating a slotted outer ring with an adjusting screw, these linear ball bearings allow for precise preload or clearance setting, ensuring optimal linear motion and minimizing vibration.

Product Features

• Adjustable Outer Ring: A machined slot and adjusting screw on the outer ring facilitate precise control over internal clearance or preload. This feature is particularly useful for achieving a tight fit with the shaft, reducing play and improving system rigidity.
• Metric Dimensions: Manufactured to metric specifications, aligning with common European and global machinery standards. This design ensures compatibility with standard linear bearing housings and shafts, simplifying replacement and new designs.
• Enhanced Rigidity: The adjustable design allows for the elimination of clearance, which significantly enhances the overall rigidity of the linear motion system. This is crucial for machine tools and other equipment where deflection must be minimized.
• Reduced Vibration: By applying a slight preload, the adjustable linear bearings can effectively minimize vibration and noise, contributing to smoother operation and extended component life.

Application Areas

The adjustable linear ball bearings are suitable for applications that demand high precision and controlled clearance. Key application areas include:

• CNC machine tools and precision measuring equipment
• Robotics and automation systems
• Medical and optical instrumentation
• 3D printers and high-speed pick-and-place machinery

FAQ

1. How do LME..UU..AJ adjustable linear bearings compare to standard LME..UU bearings for a high-precision application?

Standard LME..UU bearings are manufactured to a specific clearance range, which may not always be optimal for every application, especially when dealing with shaft diameter variations. In contrast, the LME..UU..AJ series provides the ability to manually adjust the clearance after installation. This feature allows engineers to eliminate play, achieve a light preload, and significantly increase the system's rigidity and positional accuracy. For a detailed comparison based on your specific load and travel requirements, please consult our technical team.

2. How can I resolve issues with unwanted vibration or chatter in my linear motion system?

Unwanted vibration or chatter often results from excessive clearance between the linear bearing and the shaft. The LME..UU..AJ series directly addresses this issue by allowing for precise clearance adjustment. By incrementally tightening the adjusting screw, you can reduce the clearance to a minimum or even introduce a slight preload, which absorbs vibration and leads to smoother, more consistent linear movement. The correct adjustment is dependent on the specific load, speed, and environmental conditions of your application. Our engineers can provide a free analysis to help you determine the optimal preload setting.