Linear Ball Bearings, LM8LUU 8mm Bore Longer Linear Motion Bushing Double Side Rubber Sealed Rod Liner Shaft Parts for CNC Machine 3D Printer 4 Pack

These bearings fit well, and move smoothly. I packed them with Lithium grease before inserting the rods.There is just a little play once the rods are inserted, which I believe is within specs.Good deal for the price.

They work fine for their intended purpose on my 3D printer. I installed them for the z axis on my vzbot.

My husband recently required some specific parts for a project he was working on and decided to use a 4 pack of LM16LUU 16mm Bore Longer Linear Motion Bushings. These come double side rubber sealed, which is great for the CNC machine and 3D printer work he does. He's quite particular about the components he uses, so I was interested to hear his thoughts.After putting them to use, he's concluded that the quality is adequate. They seem to fit well and move smoothly along the rods, which is essential for the precision he needs. The seals are a good feature, as they help keep out dust and debris, prolonging the life of the bearings. He hasn't had any hiccups with them so far, and they've integrated well into his setup. It's not always you find parts that do exactly what you need without any issues, and these linear ball bearings have done just that.