How To Adjust The Preload Of The Linear Guide Shaft Support?

Adjusting the preload of the linear guide shaft support is a key step, which directly affects the accuracy, stability and service life of the guide.

1. Determine the adjustment method
Choose a suitable preload adjustment method according to the type and application scenario of the linear guide. Common adjustment methods include spiral spring preload adjustment method, locking nut preload adjustment method and hydraulic preload adjustment method.

Spiral spring preload adjustment method:
Applicable to smaller linear guides.
Adjust the preload by adjusting the depth and number of spring holes.
Pay attention to the complexity of the operation to avoid errors.
Locking nut preload adjustment method:
More suitable for larger linear guides.
Adjust the preload by adjusting the tightening force of the locking nut.
The operator needs to have certain professional knowledge and skills.
Hydraulic preload adjustment method:
Applicable to high-precision and high-load guides in large machine tools or equipment.
The preload is adjusted by adjusting the working pressure of the hydraulic cylinder.

2. Specific operation steps
Take the locking nut preload adjustment method as an example, the specific operation steps are as follows:
Determine the adjustment point:
Determine the adjustment point of the preload device according to the structure and design of the linear guide system. It is usually located at the connection position between the slider and the guide rail.
Loosen the screw:
Use a suitable tool to first loosen the adjustment screw or locking nut on the preload device for subsequent adjustment operations.
Adjust the preload force:
According to the requirements and actual conditions of the system, gradually rotate the adjustment screw or locking nut to increase or decrease the preload force.
During the adjustment process, it is necessary to maintain uniform force and avoid over-tightening to avoid negative impact on system performance.
You can refer to the preload adjustment range or standard value provided by the manufacturer for operation.
Fix the screw:
After adjusting the preload force, use a wrench or wrench set to fix the adjustment screw or locking nut to maintain a stable preload force.
Make sure that the balance and movement of the system will not be affected when the screw or nut is tightened.

3. Precautions
Follow the operating instructions:
When adjusting the preload force, be sure to strictly follow the operating instructions and follow the prescribed steps to operate.
Avoid over-tightening or loosening: Over-tightening or loosening will affect the service life and accuracy of the linear guide. Therefore, special attention should be paid to controlling the size of the preload force during the adjustment process. Regular inspection and maintenance: Regularly maintain and service the linear guide system to check whether the status of the preload device and the size of the preload force meet the requirements. Timely discover and deal with problems such as looseness and wear of the guide system to ensure the stability and accuracy of the guide system. Professional knowledge and skills: The operator needs to have certain professional knowledge and skills and strictly follow the safety operating procedures. Pay attention to personal safety during operation to avoid accidents.