Huayu SBR Linear motion ball slide guide
https://www.hyballscrew.com/product/sbr-rail/sbr-linear-motion-ball-slide-guide.html
Low coefficient of friction, reliable friction characteristics that do not increase over the time of the bearing use. Built in double standard seals made from Polymer Resin cage for quieter operation by high speed motion.

Products with good accuracy, safe and reliable.
Smooth moving,high rigidity, long life, economical and easy to maintain and replace