How to keep the accuracy of linear guides unchanged?

How to keep the accuracy of linear guides unchanged? The linear guide rail is equipped with a grease nipple on the slider, which can be directly injected into the grease with a grease gun, or it can be replaced with a special oil pipe joint to connect to the oil supply pipe for active lubrication of the oil supply machine. The fixed components are generally of the guide rail type, which guarantees the accuracy of the linear guide. If the linear guide is bent and deformed, the component will lose the precise guidance. Bot Seiko linear guides are interchangeable. Machine tool slides can be replaced with slides or guide rails or even linear guides. The machine can regain high-precision guidance.