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⚙️ Elevate your motion game—smooth, sealed, and built to last!
The MELIFE 12PCS LM12UU Linear Ball Bearings feature a 12mm bore diameter and double side rubber seals to prevent contamination, ensuring smooth, low-friction linear motion ideal for CNC machines and 3D printers. Made from durable carbon steel, these standardized bearings offer high rigidity and long service life, making them a reliable choice for professionals and hobbyists seeking precision and durability in their linear motion components.
| ASIN | B0CL3VKRBR |
| Bearing Number | LM12UU |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #35,102 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Linear Ball Bearings |
| Brand | MELIFE |
| Brand Name | MELIFE |
| Compatible Lubricant | general purpose oil |
| Customer Reviews | 4.3 out of 5 stars 29 Reviews |
| Included Components | Linear Ball Bearings |
| Item Dimensions | 1.18 x 0.83 x 0.83 inches |
| Item Thickness | 21 Millimeters |
| Item dimensions L x W x H | 1.18 x 0.83 x 0.83 inches |
| Manufacturer | MELIFE |
| Material | Rubber Carbon Steel |
| Material Type | Rubber Carbon Steel |
| Outside Diameter | 21 Millimeters |
| UPC | 687117734372 |
A**P
Worked out great
Great price, great purchase
R**T
Good replacement for my Prusa MK4
I broke one of the new bearings when assembling the printer so I purchased these as a replacement. You can feel a difference between the originals that feel more qualitative compared to these bearings but the one I replaced it's on for about 6 months and had no issues.
R**.
Decent value, not precise
Well, you honestly get what you pay for. Do they work? Yes. Do they work well? Define well. But honestly, for the price of less than 1 THK LM8, you really can't complain. So great for the money. I needed 6 for my project so I have a second set. That would have cost me $180 for genuine THKs.
M**E
Worked as intended.
Be careful as several very small ball bearings fell out of one of them when mounting it on the rail. Only slight issue is that there was a little play (a bit larger than the shaft they were on) that worked out ok when I mounted two of them in my carrier.
D**A
Fit and worked perfectly
Fair price for the quantity (though I only needed half that amount). They appear the same as what's in my Prusa Mk4.
C**I
Smooth but a little noisy
It’s much smoother now and the prints are cleaner. You can hear the ball bearings rolling around and my plastics bushings were quieter. But with all the fans you dont hear it that much louder. I took it apart and put a small amount of grease in it. I hope the seals on the ends dont drip. I’ll edit this comment if I see a problem, but it did quiet it down a little.
Z**6
Junk....
Junk. Not smooth at all, and way too much slop. Almost feels like there's machining chips or dirt in there. Cleaned several times but didn't help much. Bad quality bearing and undersized I assume. Not even worth wasting time to return.
J**E
50% move smoothly
50% of the bearings had passably smooth operation. The other 50% were too tight and rubbing or were gritty in their motion. For the price I guess that is what you pay for. Luckily I only needed one and the rest were for spare for other side projects. And they are still less expensive than one from McMaster but I wouldn't trust them on a project where they would be hard to replace or you expect longevity.
Trustpilot
4 dagen geleden
3 weken geleden