uxcell 20pcs MR63ZZ 3mmx6mmx2.5mm Double Shielded Miniature Deep Groove Ball Bearing

4.3 4.3 out of 5 stars | 185 ratings

Price: 13.99

Last update: 12-23-2024


About this item

MR63ZZ Miniature Single Row Deep Groove Ball Bearing.
Bearing made from Chrome Steel(Gcr15) for durability and resistance.
Two steel dust shields to prevent ingress of dirt and foreign matter, high temperature resistance.
Features: simple configuration,high speed,less coefficient of friction,less vibration and noise.
Mainly take the radial load as well as moderate axial load.

Product information

Technical Details


Top reviews from the United States

  • Richard Brock
    5.0 out of 5 stars Great little bearings...
    Reviewed in the United States on April 27, 2024
    I use them as part of internal hinges for laser finger boxes. 2mm stainless shafts fit perfectly and rotate just right, with no slop. Exactly why I purchased them.
  • MLG
    5.0 out of 5 stars Work well.
    Reviewed in the United States on October 28, 2024
    These work perfectly for my project.
  • Sir-Lancaster
    4.0 out of 5 stars MR52ZZ(2mm ID) Great Little bearings. Tight tolerances. Little under 2mm ID. Rusted with moisture.
    Reviewed in the United States on August 7, 2019
    I bought these for an RC Boat project to use on the output of the drive shaft. These are not stainless and rusted after the first use. They continued to work after breaking the rust free so no problem for me. Will buy stainless next time. Spun up to 25,000 RPM with no noise or vibrations of any kind. Amazing little bearings.
  • Ricardo zambrano
    5.0 out of 5 stars Muy buen calidad
    Reviewed in the United States on December 12, 2024
    Tal cual está en la descripción funciona perfectamente
  • Patrick Deegan
    5.0 out of 5 stars They work!
    Reviewed in the United States on February 27, 2024
    So tiny! The inside diameter fits a toothpick. Perfect for what I'm doing.
  • Mike S.
    5.0 out of 5 stars Works to improve Lego train car bogies
    Reviewed in the United States on February 25, 2019
    I used these to create more realistic looking freight and passenger train cars' bogies (trucks). They roll better than the standard Lego wheel holders. The fit in a technic pin hole with a little bit of extra force.
  • Jason S.
    5.0 out of 5 stars Great little bearings that are self sealed and work perfect for hobby projects
    Reviewed in the United States on June 17, 2021
    These little bearing are well-engineered, self-sealed, and lubricated. I've used them in many projects and have ordered them several times over. Highly recommend them. They are also very strong.
  • Joshua Steven Simpson
    1.0 out of 5 stars Useless Junk
    Reviewed in the United States on December 30, 2021
    The inner diameter is smaller than 2mm which means they are useless for the rods I need them to go on. Secondly they do not turn very well which is a big issue for a bearing to have. Save your money and find different ones to buy

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