a) High positioning accuracy. The motion of the linear guide is achieved through the rolling of steel balls, resulting in low friction resistance of the guide pair and a small difference in dynamic and static friction resistance, making it less prone to crawling at low speeds. High repeat positioning accuracy, suitable for frequent starting or reversing of moving parts. The positioning accuracy of the machine tool can be set to the ultra micron level. At the same time, according to the needs, the preload is appropriately increased to ensure that the steel ball does not slide, achieve smooth movement, and reduce the impact and vibration of the movement.

b) Small wear and tear. For fluid lubrication of sliding guide surfaces, motion accuracy errors cannot be avoided due to the floating of the oil film. In the vast majority of cases, fluid lubrication is limited to the boundary region, and direct friction generated by metal contact is unavoidable. In this friction, a large amount of energy is wasted through frictional losses. On the contrary, rolling contact, due to its low frictional energy consumption, also reduces the frictional loss of the rolling surface, thus enabling the rolling linear guide system to remain in a high-precision state for a long time. Meanwhile, due to the minimal use of lubricating oil, it has become very easy to design and maintain the lubrication system of machine tools.

c) Adapt to high-speed motion and significantly reduce driving power. Machine tools using rolling linear guides can reduce the required power source and power transmission mechanism due to low friction resistance, greatly reducing the driving torque and reducing the power required by the machine by 80%, resulting in significant energy-saving effects. It can achieve high-speed movement of machine tools and improve their work efficiency by 20-30%.

d) Strong carrying capacity. Rolling linear guide pairs have good load-bearing performance and can withstand forces and torque loads in different directions, such as up, down, left, and right directions, as well as bouncing, shaking, and swinging moments. Therefore, it has good load adaptability. Adding appropriate preload in design and manufacturing can increase damping, improve vibration resistance, and eliminate high-frequency vibration phenomena. However, the sliding guide rail can withstand relatively small lateral loads in the direction parallel to the contact surface, which can easily cause poor operating accuracy of the machine tool.

e) Easy to assemble and interchangeable. Traditional sliding guides require scraping and grinding the guide surface, which is both laborious and time-consuming, and once the machine tool accuracy is poor, it must be scraped and ground again. The rolling guide rail has interchangeability, and by replacing the slider, guide rail, or the entire rolling guide rail pair, the machine tool can regain high precision.

As mentioned earlier, the relative motion of the ball between the guide rail and the slider is rolling, which can reduce friction losses. The rolling friction coefficient is usually around 2% of the sliding friction coefficient, so the transmission mechanism using rolling guides is far superior to traditional sliding guides.