1.基本静额定负荷

1. Basic static rated load

直线导轨在静止或运动中若承受过大的负荷，活受有很大冲击负荷时，会导致接触面和钢珠产生局部的变形，当变形量超过某一限度，将妨碍直线导轨运动的平稳性。基本额定负荷便是容许这个的变形量的极限负荷。依照定义：负荷的方向和大小不变的状态下，在受到应力接触面处，钢珠与珠道表面的总变形量恰为钢珠直径万分之一时的静止负荷。

If a linear guide is subjected to excessive loads during static or motion, and is subjected to significant impact loads, it will cause local deformation of the contact surface and steel balls. When the deformation exceeds a certain limit, it will hinder the smoothness of the linear guide's motion. The basic rated load is the maximum load that allows for this deformation. According to the definition, in a state where the direction and magnitude of the load remain unchanged, the total deformation of the steel ball and the surface of the ball track at the stress contact surface is exactly one ten thousandth of the diameter of the steel ball under static load.

2.容许静力矩（Mo）的定义

2. Definition of allowable static moment (Mo)

当滑块受到应力钢珠到上述定义静额定负荷时，此时滑块所承载之力矩称为静额定力矩，在直线导轨运动中是以（Mr）Mp

When the slider is subjected to a stress steel ball and reaches the static rated load defined above, the torque carried by the slider at this time is called the static rated torque, which is measured in (Mr) Mp during linear guide motion

My这三个方向定义：

My three directions are defined as:

3.静系数

3. Static safety factor

当直线导轨使用在慢速运动和作动频率不高的状态下，需考虑静系数。根据不同的使用状况，计算静负荷必须考虑不同的系数，尤其是当导轨受有冲击性负时，需要取用较大的系数。

When using linear guides in slow motion and low operating frequency, the static safety factor needs to be considered. According to different usage conditions, different safety factors must be considered when calculating static loads, especially when the guide rail is subjected to negative impact, a larger safety factor needs to be taken.