Linear Motion Bearing LM8UU (8mm Dia)

From the shop's description

Linear bearings are used for linear motion. They can be used to build economic and simple linear guiding systems for a wide variety of applications such as CNC. This linear ball bearing is slide along an 8mm linear shaft. These are very slim, and good for when you want to attach a motion carriage onto a railing without adding a lot of weight. These are very basic bearings, they are meant for a stepper-motion controlled. Specifications 24mm long x 15mm outer diameter x 8mm inner diameter Dynamic load rating C(N): 260 N Static load rating Co(N): 400 N 4 Ball races inside 2 grooves with 14.5mm outer diameter