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uxcell LM8UU Extra Long Linear Ball Bearings, 8mm Bore Dia, 15mm OD, 45mm Length (Pack of 4)

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$12.09

$ 5 .99 $5.99

In Stock

1.Size:10mm


About this item

  • Model: LM8UU (Nominal Shaft Diamter (dr): 8mm, Outer Diameter (D): 15mm, Total Length (L): 45mm)
  • Linear Motion Ball Bearing Bushing Sealed on Both Side
  • Chromium Steel shell and bearing ball, good abrasion resistance, high precision and good strength
  • Smooth moving, low friction, high rigidity and long working life
  • Suitalbe for kinds of electronic equipment/guide bar, and pillar



Product Description

1

  • Linear motion bearings provide freedom of movement in a single direction.
  • Often used in conjunction with cylindrical shaft or rail.
  • The steel ball is in point contact with the shaft and rotates with very little frictional resistance, so as to obtain smooth movement with high precision.
1

Linear Ball Bearing Motion Slide Units

  1. Grease may be applied prior to use to improve smoothness.
  2. Maintain lubrication of optical shafts and guides during operation.
  3. The recommended load is 80% of the rated load, exceeding the rated load will affect fluidity.
  4. The table needs to be level during installation, otherwise it will interfere with installation calibration.
  5. Require regular cleaning and maintenance.

1
Linear Motion Bearing

X-Y tables, linear stages, machine slides and other advanced slides use linear motion bearings to provide movement along both X and Y multiple axis.

Applications

  • Replacement of parts of the 3D printer rail unit.
  • Replacement of common machine tool guideway components.
  • Laser (engraving machine) rail set-up and parts replacement
  • Construction and replacement of small planing machine tables, carriers, rails and parts.
  • Mechanical Slides
  • 2-axis, 3-axis Benches
  • Linear Stages
Customer Reviews
3.5 out of 5 stars 11
4.0 out of 5 stars 180
1.0 out of 5 stars 1
4.0 out of 5 stars 54
4.1 out of 5 stars 69
4.2 out of 5 stars 21
Quantity 2pcs 4pcs 1piece 2pcs 4pcs 4pcs
Customer Reviews
3.9 out of 5 stars 49
4.3 out of 5 stars 71
4.0 out of 5 stars 39
3.9 out of 5 stars 34
4.3 out of 5 stars 3
5.0 out of 5 stars 4
Quantity 2pcs 2pcs 2pcs 2pcs 2pcs 2pcs
Customer Reviews
3.6 out of 5 stars 21
4.4 out of 5 stars 80
4.2 out of 5 stars 16
4.6 out of 5 stars 12
3.2 out of 5 stars 4
Quantity 2pcs 4pcs 1piece 2pcs 1piece 2pcs

Katherine Scott
2025-09-02 17:14:59
I got these to replace the linear bearings on my Creality Ender 3 V3 SE printer since the original ones had a lot of play in them causing issues with bed movement. These fixed all the issues!
Dustin
2025-08-06 16:36:43
Had one completely screw up and ruined my 10mm smooth rod.
Biomax
2025-07-29 15:17:06
They are a bit scratchy as far as audible noise and there is some slop on a 8mm hardened rod. This is my first set of linear bearings so I don't really have any reference point but they work pretty well 👌 would buy again.
3AMworks
2025-07-22 16:24:37
Good value upgrade for my i3 mega bed bearings! Exactly what I needed. Thanks!
Will C
2025-07-14 11:40:21
I bought these for a 3D printer re-build I am doing. Fuishi and Fluishi (the other budget bearing brand on Amazon) are much better. The uxcell come bone dry from the factory, completely ungreased. I got one of them to work, passably, because I had a specific LM8UU grease applicator tool and soaked another in machine oil overnight. But there was a lot of catching/grinding with the smooth rod. Waste of money.
Skyler Dunn
2025-01-13 17:33:21
Purchased these to replace the z axis bearings on my 3018 cnc. These are almost three times longer but appears to have much more play on them. The inner black part of the bearing actually moves inside the outside casing.
Robert D.
2025-01-03 17:41:28
They work good thanks
Oldguy
2024-12-25 12:19:02
Shows falsely in 10mm bearing section.To make sure, this review is for the uxcell LM8UU Extra Long Linear Ball Bearings.Received Item on time and went to install. Put some lube into the bearing and installed it.During the first test, the inner works came out to say hello and spilled the tiny balls all over.Check the images and you'll understand what I am saying.This was within the first few seconds after install, not after 2000 miles or so.So, there must be no QA or very little of it.I don't feel like going through the return process, since the cost of it doesn't justify this action.
Btbobby
2024-12-06 19:43:52
Happy with the purchase