1. The main characteristics of linear guide oil are strong adhesion, water resistance and extreme pressure resistance. The guide rail load is generally 10-100kpa, the precision machine tool is about 30KPa, the medium load is 350kPa, and the maximum load is more than 1kPa. The function of oil guide is to protect the guide rail and slide block, so that the ring will not be worn, so that the accuracy of the guide rail can be best protected for a long time.

2、有时在直线导轨上会有水接触，如车床、加工等，经常会有水溅到直线导轨上。如果导轨油的水分离性能不好，它将被水分解。油滴进入切削液会造成切削液污染，因此导轨的水分离性能非常重要。一些精密机床由于使用方便，与导轨和液压系统共用一种油，这就需要专用的双用油作为液压导轨。否则，如果只使用液压油，由于耐磨性差，导轨会被水磨损或冲走；如果只使用导轨油，液压系统可能有更多的淤泥和更少的压力。液压导轨油既有优点，又可使用两部分。但在液压系统中，其效果不如液压油，也不如专用轨道油，但对轻载小型机床无害。

2. Sometimes there will be water contact on the linear guide rail, such as lathe, machining center, etc., and water often splashes on the linear guide rail. If the water separation performance of rail oil is not good, it will be decomposed by water. Oil droplets entering the cutting fluid will pollute the cutting fluid, so the water separation performance of the guide rail is very important. Some precision machine tools share one kind of oil with the guide rail and hydraulic system because of its convenient use, which requires special dual oil as hydraulic guide. Otherwise, if only hydraulic oil is used, the guide rail will be worn or washed away by water due to poor wear resistance; if only guide oil is used, the hydraulic system may have more sludge and less pressure. Hydraulic guide oil has advantages and can be used in two parts. However, in the hydraulic system, its effect is not as good as that of hydraulic oil and special rail oil, but it is harmless to light load small machine tools.

3、一些粗糙的机器有大的导轨，简单的结构和在直线导轨中的凹坑。它们的设计是用油脂润滑的，而且大部分都是用油脂涂抹在手上。要求所有润滑脂为EP极压型，否则，挤压后，导轨上的残余润滑脂不能承受重载。进口机械的轨道润滑大多采用集中供油方式，即将轨道油或极压润滑脂安装在透明容器内，机械自动供油。无论使用哪种油，导轨中使用的润滑脂都是不可回收的，大多数导轨暴露在外，不能回收利用。

3. Some rough machines have large guides, simple construction and pits in straight rails. They are designed to be greased, and most of them are greased on the hands. All grease is required to be EP extreme pressure type, otherwise, the residual grease on the guide rail can not bear heavy load after extrusion. The rail lubrication of imported machinery mostly adopts centralized oil supply mode, that is, the rail oil or extreme pressure grease is installed in a transparent container, and the machinery supplies oil automatically. No matter what kind of oil is used, the grease used in the guide rail is not recyclable. Most of the guide rails are exposed and cannot be recycled.

4、导轨润滑粘度选择：导引油粘度仅为32, 68, 150，220为四。与液压系统共用的液压导油只有一个规格32号，它适用于额定压力低于7MPa。如果滑动台的滑动速度小于10m/min，则滑动台的载荷压力小于70KPa，68如果滑动台的滑动速度大于10m/min，则机械设备通常只使用32或68#。

4. Guide oil viscosity selection: guide oil viscosity is only 32, 68, 150, 220 is four. The hydraulic guide oil shared with the hydraulic system has only one Specification No. 32, which is suitable for rated pressure less than 7MPa. If the sliding speed of the sliding table is less than 10m / min, the load pressure of the sliding table is less than 70kpa. 68 If the sliding speed of the sliding table is greater than 10m / min, the mechanical equipment usually only uses 32 or 68 μ M.

5、滚珠丝杠、螺母的抗振和稳定性抗振是指直线导轨在给定工况下承受强迫振动和冲击的能力，而稳定性是指自激振动的性能。

5. The anti vibration and stability anti vibration of ball screw and nut refers to the ability of linear guide bearing forced vibration and impact under given conditions, while stability refers to the performance of self-excited vibration.

6、导轨的刚度即导轨抵抗变形的能力。变形会影响零件的相对位置和导轨精度，这对精密机械和仪器尤其重要。导轨的变形包括导轨本体的变形和导轨的接触变形，两者都应考虑。

6. The stiffness of the guide rail is the ability of the guide rail to resist deformation. Deformation will affect the relative position of parts and the precision of guide rail, which is particularly important for precision machinery and instruments. The deformation of guide rail includes the deformation of guide body and contact deformation of guide rail, both of which should be considered.

7、滚珠螺母结构工艺性，滚珠螺母结构工艺性是指加工导轨副（包括导轨副所在的部件）的难易程度。在满足设计要求的前提下，必须使制造和维护尽可能方便和低成本。

7. Ball nut structure technology, ball nut structure technology refers to the difficulty of processing guide rail pair (including the parts of the guide pair). On the premise of meeting the design requirements, manufacturing and maintenance must be made as convenient and low-cost as possible.