Linear Rolling Guidance Systems
Linear System Technologies
A linear roller guide works on the basis of rolling elements: balls, rollers or needles.
The rolling elements used ensure a very low-friction function due to the small contact area.
A widely used type of construction are linear guideways with a rolling element circulation, whereby rolling elements roll in an endless circle on specially shaped, hardened raceways between the guide carriage and the guide rail.
In the case of a shaft guide, however, balls circulate in a linear ball bearing and run directly on the smooth surface of a precision steel shaft. To avoid rotation of the linear ball bearing in certain applications, grooved shafts are used. The balls run off in the long-ground grooves.
In the case of track roller guides, various track rollers take on the function of rolling elements. Depending on the type of castors, they work on straight, square or round steel profiles.
In the case of ball screws, balls roll between the threaded spindle and ball screw nut. A rotational movement with a very high degree of efficiency is converted into a linear movement.
In a flat or angled cage guide, rolling elements are stored in the designated cage pockets without falling out and are embedded between two raceways.
