This is self aligning pillow block bearing which also called KFL08 FL08 K08 Flange Bearing. You can adjust or replace the bearing easily. The bearing has a wide inner ring with two set screws for attaching to the shaft.
Specifications:
Surface Roughness:Ra 0.4
Model Number:KFL08
Structure:linear shaft
Color:
Material: zinc alloy
Size about: inner diameter 8MM