1. High positioning accuracy. The movement along the linear guide rail on the rolling is realized by steel ball rolling. The friction resistance of the guide rail pair is small, and the difference between dynamic and static friction resistance is small. It is not easy to crawl at low speed. High repeated positioning accuracy, suitable for moving parts with frequent starting or reversing. The positioning accuracy of the machine tool can be set to the ultra micron level. At the same time, increase the preload appropriately as required to ensure that the steel ball does not slide, achieve stable movement, and reduce the impact and vibration of the movement.
2. Small wear. For the fluid lubrication of the sliding guide surface, due to the floating of the oil film, the movement accuracy error is unavoidable. In most cases, fluid lubrication is limited to the boundary area, and direct friction caused by metal contact is unavoidable. In this friction, a large amount of energy is wasted as friction loss. On the contrary, rolling contact can make the rolling linear guide system in a high precision state for a long time due to its low friction energy consumption and the corresponding reduction of friction loss on the rolling surface. At the same time, the use of lubricating oil is also very small, which makes it very easy to design and maintain the lubricating system of the machine tool.
3. Adapt to high-speed movement and greatly reduce driving power. Because of the small friction resistance of the machine tool with rolling linear guide, the required power source and power transmission mechanism can be miniaturized, the driving torque can be greatly reduced, and the power required by the machine tool can be reduced by 80%. The energy-saving effect is obvious. It can realize the high-speed movement of the machine tool and improve the working efficiency of the machine tool by 20~30%.
