SSB Linear guide adopts high-performance modular design. In order to make the 4 acting directions (Radial, reverse radial and lateral directions) applied to the slider all have the same related load, each row of ball is placed at a contact angle of 45°.
The raceway surface of SSB linear guide adopts 4 rows of rolling are grooves with reasonable ratio, so that the contact stress is small and effect of automatic adjustment is obvious. The bearing capacity and rigidity are greatly improved compared with the point contact of the flat and steel ball, realizing no backlash movement.
SSB linear guide has self-adjustment capability, which enables a mounting error to be absorbed even under a preload, thus to achieve high accurate, smooth motion.
SSB Linear guide balls roll in four rows of raceways precision-ground on an LM rail and LM block, and the ball cages and endplates incorporated in the LM block allow the balls to circulate.
SSB has a structure in which steel balls are held by a ball holder top circulate, so the friction between the steel balls is eliminated, and the steel balls can be arranged at even intervals to move. Also, the grease accumulated in the space (grease storage space) between the steel ball circulation part and the ball holder is applied to the contact surface between each steel ball and the ball holder as the steel ball rotates, thereby an oil film will always form on the surface of the steel ball. Therefore, the oil film is not easily broken.
Ball caged linear guide enabled high-speed rotation at a low noise level, and extended the service life despite the reduced number of balls used. So it has been greatly developed.
Similarly, the quality of needle bearings was significantly improved by the caged needle structure. With cage-less, full ball types of ball bearings, balls make metallic contact with one another and produce loud noise. In addition, they rotate in opposite directions, causing the sliding contact between two adjacent balls to occur at a speed twice the ball-spinning rate. It results in severe wear and shortens the service life.
In addition, without a cage, balls make point contact to increase bearing stress, thus facilitating breakage of the oil film. In contrast, each caged ball contacts the cage over a wide area Therefore, the oil film does not break, the noise level is low and balls can rotate at a high speed, resulting in a long service life.