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R4-2RS Bearing 1/4x5/8x.196, Rubber Sealed Steel 20-Pack

  • Based on 67 reviews
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Availability: Only 10 left in stock, order soon!
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Arrives Wednesday, Oct 21
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Features

  • R4-2RS Miniature Bearing: 1/4 inch bore x 5/8 inch OD x 0.196 inch width. Double rubber seals (2RS) on both sides. 20 bearings in the pack. Fits 3D printers, RC cars, and small hobby equipment.
  • Double Rubber Sealed, Pre-Lubricated: 2RS rubber seals press directly against the inner ring, locking in factory grease and standing up to workshop dust. Arrives ready to install.
  • Chrome Steel, Precision Ground for Smooth Rotation: Tight tolerances ensure consistent, low-noise spin for 3D printers running overnight or RC vehicles at full throttle.
  • Standard R4 Imperial Size: If your old bearing reads R4-2RS or R4RS, confirm dimensions and this drops right in. Not to be confused with metric miniature bearings.
  • 20 Pack: RC cars and 3D printers use multiple R4 bearings. With 20 in the pack, you are covered for a full build plus spares for the next project.

Description

100% Bearing Steel Built for Excellence, Discover the High Performance of Our Ball Bearings Reliable Solutions Versatile Applications: Electric Motors, Industrial Machinery, Automotive, Household Appliances etc Strict Quality Control Long Service Life, Minimal Maintenance, High Efficiency Advanced Machining Elevate Your Expectations with our Factory's High-End Quality and Precision Exceptional durability Experience Precision and Durability with Our Factory's Customized Ball Bearings In order to achieve optimum performance and maximize bearing performance and life, Donepart uses a variety of high-quality materials to produce a wide range of bearing components with new materials and state-of-the-art manufacturing technology to meet the increasingly demanding and demanding requirements of modern industry. Can I get customized bearings for specific requirements? Yes, we are the factory, we have our own R&D department as well as the production line. So we can make all kinds of bearing according to the customer's needs. Are these bearings suitable for DIY projects or professional use? Yes, Donepart bearings has a wide ranges of bearing, can be used in many industries. You can find the right bearing for your request. What are the different types of ball bearings available? We can make various types, such as deep groove, angular contact, thrust, and self-aligning ball bearings, and more others. Do these bearings come with seals or shields for added protection? Yes, we have two kinds of bearing. 2RS bearings with double rubber sealed, ZZ bearings with double metal sealed. What material options are available for ball bearings, and which one is best for my needs? All Donepart bearings are made of high-quality chrome steel with superior hardness and strength, making it suitable for high-load applications and harsh environments. Donepar bearings are made of high-quality chrome steel, not carbon steel, giving you more stability, control, and reliability than standard bearings. Our deep groove ball bearings are meticulously crafted with precision manufacturing, ensuring a flawless performance that exceeds expectations. Count on our high-performance bearings to respond swiftly and consistently, meeting the demands of your dynamic applications. R8-2RS Ball Bearings R6-2RS Ball Bearing R16-2RS Ball Bearings 1641NR-2RS Ball Bearings 6202-2RS Ball Bearings 99502H-2RS Ball Bearings R8-2RS Ball Bearings

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


Brand Name: Donepart


Bearing Number: R4-2RS


Bearing Type: Ball Bearing


Number of Items: 20


Part Number: R4-2rs


Unit Count: 20 Count


Manufacturer: Donepart


Included Components: Donepart Bearings 20-Pack R4-2RS


Item Dimensions: 0.25 x 0.2 inches


Item Thickness: 0.2 inches


Outside Diameter: 5/8 inches


Material Type: Alloy Steel


Compatible Lubricant: Grease


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 21

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


  • Correct fit
Works perfect and smooth.
Reviewed in the United States on January 21, 2026 by James E Rasmussen

  • High quality bearings
These were the exact replacement bearings for my project
Reviewed in the United States on December 5, 2025 by Raoul Jeanneret

  • Received
Size is small but it will work. For the value and cost, it will function as needed. It spins well.
Reviewed in the United States on September 4, 2025 by Daryl Jones

  • I use these to do props for my model airplanes for a wind vein
These were great for model airplanes for wind dejection on the prop
Reviewed in the United States on September 25, 2025 by Jane

  • Good bearings
Smooth rolling. The size is as expected.
Reviewed in the United States on April 20, 2025 by GingerNerd

  • Perfect for 3D Printing Projects
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. ... show more
Reviewed in the United States on January 7, 2025 by JThayer

  • Sealed bearings are GREAT for RC cars.
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. ... show more
Reviewed in the United States on January 16, 2025 by JohnsonFamily

  • Comes in plastic storage containers and seem nicely built Comes in plastic storage containers and seem nicely built
I got these for an upcoming science project involving a solar-to-wind powered model car using these bearings as part of low-friction wheels. They come in cylindrical storage containers (10 per container) which is great for protecting the unused ones from dust and moisture when in storage for future projects. I measured 0.625” OD and 0.2485” ID and 0.1960” wide on a bearing picked at random. I didn’t see any tolerance specifications in the Amazon description and no documentation came with the bearings. They look nicely built and when I put a 1/4” plastic rod in one, it rotated smoothly and didn’t notice any obvious “slop” in the bearing. Can’t wait to build my project! ... show more
Reviewed in the United States on January 9, 2025 Reviewed in the United States on January 9, 2025 by Amazon reviewer

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