1) Basic structure and performance

基本构造是由1.直线导轨、2.直线运动滑导块、3.滚动轴承用滚珠构成。

The basic structure is composed of 1. Linear guide, 2. Linear motion guide block, 3. Rolling bearing ball.

对于这种构造可根据使用规格选择各种产品。例如采用密封板类零件构造可实现其防尘性和无尘室使用要求，采用滚珠保持器构造可提高其滑动性能等等。此外，对于直线滑动条件和负载、为了实现更高的导向精度，根据实际情况可采用2支导轨或和多个滑块的构造。

For this structure, various products can be selected according to the specifications. For example, the use of sealing plate parts can achieve the requirements of dust-proof and dust-free chamber, and the use of ball retainer can improve its sliding performance. In addition, for linear sliding conditions and loads, in order to achieve higher guidance accuracy, according to the actual situation, the structure of two guide rails or multiple sliders can be adopted.

(2)滚动轴承部的构造和功能

(2) Structure and function of rolling bearing part

(a)滚动轴承单元的构造

(a) Structure of rolling bearing unit

直线导轨的性能基本上是由滚动轴承单元的构造决定的。导轨上滚珠用导向槽的个数称为「列数」，在滚道内滚珠的接触点数作为「点接触数」、用来表现滚珠轴承单元的构造。这种多列滚珠轴承的构造，即使在急速加减速时承受力矩载荷或长时间在严苛条件下连续运行等情况下，也可保持其精度。

The performance of linear guide is basically determined by the structure of rolling bearing unit. The number of guide grooves for balls on the guide rail is called "column number". The number of contact points of balls in the raceway is regarded as "point contact number", which is used to represent the structure of ball bearing unit. The structure of the multi row ball bearing can keep its accuracy even under the condition of bearing torque load during rapid acceleration and deceleration or continuous operation under severe conditions for a long time.

此外，也有在预压状态不同的情况下、轴承单元的接触状态会发生变化，用以维持高刚性・高精度的产品构造。

In addition, under different preloading conditions, the contact state of the bearing unit will change to maintain high rigidity and high precision product structure.

(b)关于无噪音、平稳运行

(b) Noise free and smooth operation

直线导轨采用循环滚珠型构造，摩擦力小、可实现平稳运行。另外还有内置滚珠保持器，循环滚珠相互接触、无摩擦音，可实现长久无噪音和平稳运行的的直线导轨滑块构造。

The linear guide adopts the circular ball structure, which has small friction and can realize smooth operation. In addition, there is a built-in ball holder, which makes the circulating balls contact each other and has no friction sound. It can realize the linear guide slider structure of long-term noiseless and smooth operation.

(3)其它直线导轨

(3) Other linear guides

不需要高刚性的场合，可采用精 密成形的U型不锈钢钢板、将轨道部和安装面 一 体 化的精 密滚珠滑轨构造，具有小型・轻量・低的特点。

Where high rigidity is not required, precision formed U-shaped stainless steel plate and precision ball slide structure integrating track part and mounting surface can be adopted, which has the characteristics of small size, light weight and low price.