[ManKeLing Linear Bearings] Performance characteristics of rolling linear bearings

　　01. High positioning accuracy

　　The motion of rolling linear bearings is achieved through rolling steel balls. The friction resistance of the guide rail pair is small, and the difference between static and dynamic friction resistance is small, making it less prone to creeping at low speeds. It has high positioning accuracy and is suitable for moving parts that require frequent starting or reversing. The positioning accuracy of machine tools can be set to the submicron level. At the same time, according to needs, appropriate pre-tightening force can be added to ensure that the steel balls do not slip, achieving smooth motion and reducing motion impact and vibration.

　　02. Low wear

　　For fluid lubrication of sliding guide surfaces, motion accuracy errors are inevitable due to the floating of the oil film. In most cases, fluid lubrication is limited to the boundary region, and direct friction caused by metal contact is unavoidable, with a significant amount of energy wasted through frictional losses. Conversely, due to the low frictional energy consumption of rolling contact, the frictional loss on the rolling surface is also correspondingly reduced, allowing the rolling linear guide system to maintain high precision over a long period of time. At the same time, the use of lubricating oil is minimal, making the design, use, and maintenance of the machine tool lubrication system very easy.

　　03. Adapt to high-speed movement, significantly reducing driving force.

　　Due to the low frictional resistance, rolling linear guide machine tools enable the miniaturization of the required power source and power transmission mechanism, significantly reducing the driving torque and the power required by the machine tool by 80%, resulting in a notable energy-saving effect. It allows for high-speed movement of the machine tool, thereby increasing its work efficiency by 20-30%.

　　04. Strong carrying capacity

　　Linear guide pairs exhibit excellent load-bearing capabilities, capable of withstanding forces and moment loads in various directions such as up, down, left, and right, as well as jounce, sway, and pendulum moments. Consequently, they demonstrate good load adaptability. Proper preloading during design and manufacturing can enhance damping, improve vibration resistance, and eliminate high-frequency vibrations. However, the slide rail experiences relatively low lateral loads in directions parallel to the contact surface, which can easily lead to poor operational accuracy of the machine tool.

　　05. Easy to assemble and interchangeable.

　　Traditional sliding guides require scraping and grinding of the guide surface, which is both time-consuming and laborious. If the machine tool's accuracy is compromised, it must be re-scraped and re-ground. Rolling guides are interchangeable, so simply replacing the slider, guide, or the entire rolling guide pair can restore high precision to the machine tool.

　　As mentioned earlier, because the relative motion between the ball and the guide rail and slider is rolling, it can reduce frictional losses. Generally, the rolling friction coefficient is about 2% of the sliding friction coefficient, so the transmission mechanism using rolling guide rails is far superior to traditional sliding guide rails.