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uxcell LMK30UU Extra Long Square Flange Linear Ball Bearings, 30mm Bore Dia, 45mm OD, 123mm Length

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$21.29

$ 9 .99 $9.99

In Stock

About this item

  • Model: LMK30UU (Nominal Shaft Diamter (dr): 30mm, Outer Diameter (D): 45mm, Total Length (L): 123mm)
  • Square Flange 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 181
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
4.0 out of 5 stars 50
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

Tori
Reviewed in the United States on May 20, 2022
The chart at the bottom states that this one should come in a quantity of 2, but it only comes with 1 for whatever reason. Additionally it has about .2 degrees of play, meaning that ignoring all other support, my 3018 CNC would have about a full millimeter of tilt from one end to the other.
Customer
Reviewed in the United States on March 29, 2022
I ordered 4 of them for my ender 5 plus and they send me 3 extra for just in case I guess but unfortunately most of them came in with bad bearings. Only 3 out of 7 are good….I need good quality bearings for my ender 5 plus z rod to prevent from printing inconsistent layers. After replacing 3 bad bearings from my printer. I was lucky that I have only one old bearings that is still good and put 3 new in. It did solved the problem from inconsistent layers.
Lance Poruchnek
Reviewed in the United States on March 17, 2020
Great upgrade for my Ender 5 Plus, built of better material and quality than the OEM ones get rid of layer lines with these guys on your Z.