Flange Mounted Linear Bearing LMK8UU (8mm Dia)

From the shop's description

Linear motion products are the most commonly used motion elements in the automation of transfer, locating, and assembly machinery. Here, another type of linear guides, flanged linear bearing (bushing). Flange Mount Linear Recirculating Ball Bearings offer the same great advantages of the standard recirculating linear Ball Bearings and they also incorporate a perpendicular flange for easy mounting. Flanged linear bearing dimensions.