The guide rail can bear the fixed device or equipment guiding the movement and reduce its friction. In general, guide rails can be used in straight-line reciprocating motion occasions, such as guiding, fixing mechanical parts, special equipment, instruments and so on. The rolling guide rail has higher rated load than the linear bearing, and can bear a certain torque, which can realize high-precision linear motion under high load. Common guide rails are mainly divided into linear guide rails and roller guide rails. Compared with linear guide rail, roller guide rail is stable and can adapt to harsh environment.

具体区别如下：

The specific differences are as follows:

1、滚轮导轨的磨损较小，可以大大提高导轨和设备的使用寿命由于在相互运动的金属材料之间如果不及时供给润滑油脂，就会产生更严重的磨耗问题，从而影响使用。所以润滑效果同样是考量导轨系统好坏的因素之一。与直线导轨相比，滚轮导轨的接触部分较小，而且是滚动摩擦。因此只需要少量的润滑油就可以满足使用要求。通常情况下滚动导轨的润滑油补给周期为1个月，运行长度约100km。

1. The wear of the roller guide rail is small, which can greatly improve the service life of the guide rail and equipment. If the lubricating grease is not supplied in time between the moving metal materials, there will be more serious wear problems, which will affect the use. Therefore, the lubrication effect is also one of the factors to consider the quality of the guide rail system. Compared with the linear guide rail, the contact part of the roller guide rail is smaller, and it is rolling friction. Only a small amount of lubricating oil can meet the requirements. Generally, the lubricating oil supply cycle of rolling guide rail is 1 month, and the operation length is about 100km

2、滚轮导轨适用于高速运动，因为滚轮导轨与直线导轨相比不容易产生摩擦热，所以热形变量很小，与直线导轨使用速度相差10倍以上。

2. The roller guide rail is suitable for high-speed movement. Because the roller guide rail is not easy to generate friction heat compared with the linear guide rail, the thermal shape variable is very small, which is more than 10 times different from the service speed of the linear guide rail.

3、滚轮导轨相比直线导轨要高。

3. The roller guide rail is higher than the linear guide rail.

4、滚轮导轨比直线导轨运行要平稳。

4. The roller guide rail runs more smoothly than the linear guide rail.

5、滚轮导轨可适应恶劣环境。

5. Roller guide rail can adapt to harsh environment.

导轨的发展也就是直线运动系统的发展过程，工业导轨出现的是滑动导向。但因为其摩擦阻力较大、运动存在间隙、寿命低、润滑油使用量大等等原因很快就被淘汰掉。进而衍生出滚轮导轨系统，它具有平稳的运动系统，而且还能适应恶劣环境。

The development of guide rail is also the development process of linear motion system. The first appearance of industrial guide rail is sliding guidance. However, it was quickly eliminated because of its large friction resistance, movement clearance, low service life, large amount of lubricating oil and so on. Then the roller guide rail system is derived, which has a stable motion system and can adapt to the harsh environment.

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