Donepart 20-Pack R4-2RS Bearings, ID 1/4 x OD 5/8 x 0.196 inch Small Ball Bearings, Double Sealed, High-Precision, Long-Lasting Miniature Bearings for Smooth Operation in 3D Printers, RC Vehicles etc
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Availability:
Only 10 left in stock, order soon!
Arrives
Wednesday, Jun 25
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Features
- [Universal Compatibility] With an inner diameter of 1/4, outer diameter of 5/8, and thickness of 0.196, these bearings fit perfectly in various equipment like 3D printers, RC cars, skateboards, and more.
- [Designed for Ease of Installation]: Donepart r4-2rs bearing with standardized dimensions ensure hassle-free installation, whether youre a hobbyist or a professional technician.
- [Precision Engineering for Smooth Performance]: Manufactured with tight tolerances to ensure seamless operation, these bearings size: 1/4 x 5/8 x 0.196 inch, provide consistent and quiet rotation for precision projects
- [Reliable Double Sealed Protection]:The dual rubber seals small ball bearings effectively, prolonging the lifespan of the bearings and reducing maintenance needs.
- [Enhanced Durability for Long-Term Use]: Donepart r4-2rs ball bearings made from premium-grade steel, built to last, offering exceptional resistance in challenging environments.
Brand: Donepart
Material: Alloy Steel
Item dimensions L x W x H: 0.25 x 0.2 inches
Bearing Number: R4-2RS
Item Thickness: 0.2 Inches
Date First Available : May 8, 2020
Manufacturer : Donepart
Country of Origin : China
Best Sellers Rank: #47,129 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #201 in Deep-Groove Ball Bearings
#201 in Deep-Groove Ball Bearings:
Customer Reviews: 4.8 4.8 out of 5 stars 33 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jun 25
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Smooth rolling. The size is as expected.
Reviewed in the United States on April 20, 2025 by GingerNerd
With an inner diameter of 1/4”, outer diameter of 5/8”, and thickness of 0.196”, Small Ball Bearings, Double Sealed, High-Precision, Long-Lasting Miniature Bearings I was building a jig for my router to do some wood working. I watched a vid online of someone that had made 1 like I wanted, and he had bought and used these for his project. So, I got these for mine and they worked GREAT!! Double sealed was important as they will be bombarded with wood chips and DUST from all types of hardwoods. And the standardized dimensions ensure hassle-free installation like they say AND I HAD bolts on hand that were the correct size, so I did not have to buy more and add the leftovers to the "WALL OF LEFTOVERS" hardware in the garage. They come packed up nice to keep air and moisture from getting to them before use! THANKS for that as I only used 4 for my jig. So, I have backups if the dust ruins them, or the quality is not good, or if I make other jigs for my bandsaw or something else in woodshop!!! SO FAR, THEY WORK flawlessly and smooth even in the DUSTY setup they are used in. I would buy these again when and if more are needed. the cost was fair and the quality is there!
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Reviewed in the United States on April 1, 2025 by GmDTX
These bearings fit right on my Traxxas slash/ bmod. The size is the common size for most 1/10 cars. Super smooth and they haven't worn after 30 races, so I'm pretty happy overall. I also like the package they come in as it makes keeping the bearing organized in my parts bag.
Reviewed in the United States on March 3, 2025 by Peekablue
Inner bore and outer race have good finish quality. Flat faces are smooth finish. Very low drag noticed from seals. Rotation of race is consistent and smooth.
Reviewed in the United States on February 28, 2025 by Gary & Nancy Gary & Nancy
I use these bearings with some 3D parts that I print. They are true to size and glide smoothly. The packaging is minimal, but I like that as they don't take up much space in my parts drawer and I can keep them dust-free in their package.
Reviewed in the United States on February 4, 2025 by T. Culler
I ordered these bearings mainly just to have on hand for odd projects. So far I've only used one to make a fidget toy for the neighbor kid. The dimensions are accurate, the seals look good, and they seem to be good enough quality for most jobs. After assembling my fidget toy I noticed the bearing was not entirely smooth throughout its rotation. Pretty good, but not perfect. I wouldn't hesitate to use these for RC cars, fidget toys, tool fixtures, or most random projects you might encounter. If you need a top quality bearing I might look elsewhere, but these should work great for most of your bearing needs.
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Reviewed in the United States on March 5, 2025 by Cody W Colvin
There are 3 main types of bearings for RC cars. Unshielded, shielded and sealed. Most RC cars come with shielded bearings (hobby grade at least), but the king of durability and performance are the sealed bearings. Water and debris can kill unshielded bearings pretty quickly if you get them too dirty, run em through mud or water. Shield are a lot better because they will keep a lot of the debris out, but not the smaller stuff and not the mud/water. These are sealed to keep all of that junk out so the bearings will perform better for longer and the bearings will last a lot longer. If you are swapping bearings do yourself a favor and spend an extra buck or two and get good ones like these.
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Reviewed in the United States on January 16, 2025 by AMooberry
I use a roller bearings from time to time in my 3D printing projects. It's the perfect solution if you want/need a wheel or pulley that turns smoothly. You just print a cavity into which bearing fits with a solid friction fit and you are rolling (both literally and metaphorically). I don't have a project at the moment for which I am planning to use these, but I did check them out. No quality issues were found. They spec out consistantly and they turn very smoothly. They are smaller than what I typically use but actually opens up some applications for which the larger ones were unsuitable. Obviously, if I encounter any issues as I put these into use, I will amend my review, but frankly, based on my examination of them, I very much doubt that there will be any issues.
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Reviewed in the United States on January 7, 2025 by JThayer