The basic structure consists of 1. linear guide rail, 2. linear motion sliding block, and 3. rolling bearings with ball bearings. For this construction, various products can be selected according to the usage specifications. For example, the use of sealing plate components can achieve its dust resistance and clean room usage requirements, while the use of ball retainers can improve its sliding performance, and so on. In addition, for linear sliding conditions and loads, in order to achieve higher guidance accuracy, a structure of 2 guide rails or multiple sliders can be used according to the actual situation.

(2) Structure and Function of Rolling Bearing Parts

(a) Construction of rolling bearing unit

The performance of linear guides is basically determined by the construction of rolling bearing units. The number of guide grooves for the balls on the guide rail is called the "column number", and the number of contact points between the balls in the raceway is called the "point contact number", which is used to represent the structure of the ball bearing unit. The structure of this multi column ball bearing can maintain its accuracy even under torque loads during rapid acceleration and deceleration or continuous operation under harsh conditions for a long time. An example of constructing a ball bearing unit.

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

(b) Regarding noise free and smooth operation

The linear guide adopts a circular ball type structure, which has low friction and can achieve smooth operation. In addition, there is a built-in ball retainer that allows the circulating balls to come into contact with each other without friction noise, achieving a long-lasting, noise free and smooth operation of the linear guide slider structure.

(3) Other linear guides

In situations where high rigidity is not required, precision formed U-shaped stainless steel plates and precision ball slide rail structures that integrate the track and installation surface can be used, which have the characteristics of small size, light weight, and low price.