With the continuous development of modern manufacturing technology, great changes have taken place in the traditional manufacturing industry. Numerical control technology, mechatronics and industrial robots have been more widely used in production. At the same time, the positioning accuracy, guiding accuracy and feed speed of the mechanical transmission mechanism are constantly improving, which has greatly changed the traditional guiding mechanism. It meets the requirements of today's machinery for high precision, high speed, energy saving and shortening the product development cycle. It has been widely used in various heavy combined machining machines, CNC machines, high-precision EDM cutting machines, grinders, industrial robots and even general industrial machinery.

1.适应高速运动且大幅降低驱动功率

1. Adapt to high-speed movement and greatly reduce driving power

采用滚动直线导轨的机床由于摩擦阻力小，可使所需的动力源及动力传递机构小型化，使驱动扭矩大大减少，使机床所需电力降低80%，效果明显。可实现机床的高速运动，提高机床的工作效率20~30%。

Due to 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, the power required by the machine tool can be reduced by 80%, and 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%.

2.承载能力强

2. Strong bearing capacity

滚动直线导轨副具有较好的承载性能，可以承受不同方向的力和力矩载荷，如承受上下左右方向的力,以及颠簸力矩、摇动力矩和摆动力矩。因此，具有很好的载荷适应性。在设计制造中加以适当的预加载荷可以增加阻尼，以提高抗振性，同时可以高频振动现象。而滑动导轨在平行接触面方向可承受的侧向负荷较小，易造成机床运行精度不良。

The rolling linear guide rail pair has good bearing performance and can bear force and torque loads in different directions, such as up, down, left and right, as well as bumping torque, shaking torque and swinging torque. Therefore, it has good load adaptability. Proper preloading in design and manufacture can increase damping, improve vibration resistance and eliminate high-frequency vibration. The sliding guide rail can bear less lateral load in the direction parallel to the contact surface, which is easy to cause poor operation accuracy of the machine tool.

3.组装容易并具互换性

3. Easy assembly and interchangeability

传统的滑动导轨必须对导轨面进行刮研，既费事又费时，且一旦机床精度不良，必须再刮研一次。滚动导轨具有互换性，只要更换滑块或导轨或整个滚动导轨副，机床即可重新获得高精度。

The traditional sliding guide rail must scrape and grind the guide rail surface, which is both time-consuming and time-consuming. Once the accuracy of the machine tool is poor, it must be scraped and grinded again. The rolling guide rail is interchangeable. As long as the slider or guide rail or the whole rolling guide rail pair is replaced, the machine tool can regain high precision.

如前所述，由于滚珠在导轨与滑块之间的相对运动为滚动，可减少摩擦损失。通常滚动摩擦系数为滑动摩擦系数的2%左右，因此采用滚动导轨的传动机构远优越于传统滑动导轨。

As mentioned earlier, since the relative motion of the ball between the guide rail and the slider is rolling, the friction loss can be reduced. Generally, the rolling friction coefficient is about 2% of the sliding friction coefficient, so the transmission mechanism using rolling guide rail is far superior to the traditional sliding guide rail.