The DF (45-°45)° combination from the circular groove can be absorbed by the elasticity of the steel ball and the transfer of the contact point during the installation, even if the mounting surface is somewhat deviated, it can be absorbed by the inside of the line slider. The effect of automatic self-aligning ability is produced to obtain a smooth motion with high precision and stability.
Interchangeable
Due to the strict control of production precision, the size of the linear guide can be maintained within a certain level, and the slider has a retainer design to prevent the steel balls from falling off. Therefore, some series of precisions are interchangeable, and customers can order the guide rails or Slider can also store guide rails and sliders separately to reduce storage space.

High rigidity in all directions
The four-row circular groove is matched with the contact angle of 45 degrees such as four rows of steel balls to make the steel ball reach the ideal two-point contact structure, which can withstand the load from the up and down and the left and right directions; if necessary, it can apply preload to improve rigidity.