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SHKI

[12 Pack] R8 2RS Ball Bearings Bearing Steel and Double Rubber Sealed Miniature Deep Groove Ball Bearings (1/2"x1-1/8"x5/16")

  • Based on 45 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Aug 16
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Size: R8


Style: R8


Features

  • - With small friction and high-limit speed, Ball Bearings are cost-effective and require little maintenance.
  • - Pack of 12 pcs R8-2RS steel ball bearings (1/2"x1-1/8"x5/16"), double-rubber sealed deep groove.
  • - SHKI Ball Bearings : If these small ball bearings dont live up to your expectations, please let us know. You take NO RISK when you purchase with us. But were betting youll fall in love with these R8 bearings , and a team of wild horses couldnt get them out of your hands and make you send them back. Youll probably order MORE!
  • - This R8 2RS shielded (1/2"x1-1/8"x5/16") miniature ball bearing is a single-row bearings for supporting radial loads. The bearings is made of bearing steel for durability and resistance to rust, corrosion and deformity under heavy loads, and is Shields on both sides keeping lubricant in and contaminants out.
  • - Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads.

Description

Note: Ball bearings are lubricated with imported grease in our factory, please wash thoroughly after touching. Shkiby Inc. Live Smart, Live Better. SHKI Ball Bearings SHKI 12 pack R8-2RS ball bearings are made of bearing steel and the lifespan is longer than carbon steel. Selection guide 2RS / Double rubber seal - Good sealing effect, low rotational resistance and medium temperature resistance. ZZ / Double metal seal - Medium sealing effect, no rotational resistance and higher temperature resistance. Open / No seal - No rotation resistance and higher temperature resistance, usually used inside machinery. Product Features - These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, ortapered. All rolling bearings are open, shielded, or sealed. - Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. - Theshield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. - Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics,dental equipment, elevators, rolling mills, ship rudder shafts, skateboards, inline skates, scooters and aggregate crushers, among others.

Brand: SHKI


Material: Stainless Steel


Bearing Number: 12


Item Thickness: 0.31 inches


Bearing Type: Ball Bearing


Brand Name: SHKI


Bearing Number: 12


Bearing Type: Ball Bearing


Part Number: SHKI-R8


Unit Count: 12 Count


Manufacturer: Shkiby Inc.


Included Components: Bearings Steel


Model: R8-2RS


Item Thickness: 0.31 inches


Outside Diameter: 0.5 inches


Material Type: Stainless Steel


Compatible Lubricant: Grease


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • One of the best
Good quality for the price
Reviewed in the United States on April 28, 2026 by Noe Ramirez
    • Good for projects bearings
The bearings have no wobby, or noticable wear in them. I'm using them in some A-zon casters that are junk since they use a crappy bushing that will wear out. I'll just size out the bushing from the casters to match these and have a much more reliable rolling surface.
Reviewed in the United States on June 7, 2023 by zoomJLzoom
    • Good product
High quality bearing.
Reviewed in the United States on January 11, 2026 by Mark Krause
    • Wheel chair bearings
Review Image by Kaniki
Review Image by Kaniki
Review Image by Kaniki
Review Image by Kaniki
Review Image by Kaniki
I have a quickie 2 wheel chair, with the larger 8x2 front wheels.. The fork that lets the front wheel turn around 360 degrees for going around corners, or in circles, has a place for 2 R8RS bearings in each side.. From the factory, it only comes with 1 on each side, and then they put a plastic spacer (which you can see in one of the pictures) in place of a second bearing (it is on the top part of the axle or stem).. I think we all know why they did this so I will not comment on it.. But the problem with that plastic spacer is that it is plastic, and plastic wears down.. Because of this, the front wheels start to get a LOT of play in them as they bounce back and forth constantly.. I took the top plastic spacers out, and replaced them with these metal bearings, and there is almost no play in the wheel now.. The bottom bearing was still in good condition, so there was no reason to replace the bottom ones.. As you can tell, there is a light amount of grease in the bearing, which is pretty much standard for any bearing made like this.. The sides are rubber as they say, and as you can see, they come off very easily with a little pick, which is standard for this type of a bearing too.. So far, they have held up great in my wheel chair.. But just to note.. I could be wrong, but I believe that the front fork assembly that they use on my chair, is the same one that they use on a lot of electric chairs, and chairs of other brands too.. I believe that it is also the same base size as the smaller, about 1" wide wheels that are close to the same diameter too.. Just different fork parts to fit the thinner tire.. If in question, just look at the bearing and on the rubber sides, it should say what the size of the bearing is.. R8 or R8RS is what mine takes.. But that same size is what is used in my plastic rear rims too.. So yea, they do use these same bearings on a lot of wheel chairs.. Just buying them like this, you get them for a fraction of the price vs the dealer.. ... show more
Reviewed in the United States on May 30, 2023 by Kaniki
    • Good value in a pack - plenty for all your replacements - seem to spec
To be fair, I'm not installing these into the Space Shuttle, just into various items around the house that other people would probably toss and I insist on repairing because I can. Zero issues with specs so far and I've not put enough revolutions on them to wear any out so far, either. They are solid, but pretty lightweight (as they would be for this size). Do be forewarned, that once you have a surplus, you're going to start noticing a LOT of things around your house that need a new bearing! Ha! Likewise, the designs for the things you build will also get to be a lot more fun with bearing action. Order some to keep on hand - they're affordable enough! Works great so far in my small machinery and designs! ... show more
Reviewed in the United States on October 14, 2023 by PragmaticScholar
    • They will fill the hole for a bearing
These are of very poor quality- the tolerances are sloppy, the seals do not hold and I cannot recommend these to anyone
Reviewed in the United States on April 9, 2024 by STS
    • solidly built
Review Image by W. B. Smith
Review Image by W. B. Smith
Review Image by W. B. Smith
Well made set of bearings. "Feels" a little slow out of the box, possibly due to heavy packing grease. But I'm not going to decide I'm smarter than the manufacturer, and started using them as-is. Results seem fine. Will update the review if something changes...
Reviewed in the United States on June 29, 2023 by W. B. Smith
    • Great for rolling projects
These aren’t the highest quality bearings you can find, but they are well-suited to low stress applications like rollers and drawers. Good, free, consistent motion. Recommended
Reviewed in the United States on August 3, 2023 by Dave Evers

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