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CHAMDONE

500PCS G25 Precision Chrome Steel Bearing Balls - 3mm Hardened Solid Balls for Bearings, DIY Projects, and Industrial Applications - Mirror Polished, High Hardness & Wear Resistant

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 21
Order within 10 hours and 32 minutes
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Size: 500Pcs - 3MM


Style: Stainless Steel


Features

  • 500-Piece 3mm G25 Precision Kit Get a substantial supply for your projects with this bulk pack of 500 identical 3mm diameter bearing balls. Manufactured to G25 precision grade standards, they guarantee exceptional roundness and minimal size variation, ensuring smooth, consistent performance in demanding applications.
  • Hardened Chrome Steel for Maximum Durability Crafted from chrome steel and through-hardened, these balls achieve high hardness (typically HRC 60+), excellent load capacity, and superior wear resistance. This translates to a long operating life, even under high-stress and high-frequency use.
  • Mirror Polished & Corrosion Resistant Surface Each ball features a flawless mirror-polished finish that minimizes friction and provides an appealing shiny appearance. The chrome steel composition offers good resistance to corrosion, making them suitable for various environments.
  • Superior Performance for Hobby & Professional Use The combination of high hardness, precision, and a smooth surface allows for reduced vibration and lower noise in mechanical assemblies. This makes them ideal for upgrading bicycle hubs, skateboard bearings, fishing reels, and other precision machinery.
  • Wide-Ranging Versatility in Applications Perfect for both functional and creative projects. Use them for bearing replacement, desk toys, pendulum weights, model making, and decorative art. A reliable component for enthusiasts, machinists, and engineers alike.

Description

Elevate your projects with our professional-grade G25 Chrome Steel Bearing Balls. Where standard balls are "good enough," ours are engineered for excellence. The G25 precision rating ensures each of the 500 balls in this set meets strict tolerances for a flawless roll and perfect fit, providing unmatched reliability for your most critical applications. Unmatched Consistency: The G25 grade means tighter tolerances on diameter and sphericity. This eliminates the bumps and jams caused by inferior balls, leading to smoother operation in bearings and higher accuracy in your projects. Built to Endure: Made from chrome steel and through-hardened, these balls boast a high surface and core hardness. They resist deformation and wear far better than mild steel or non-hardened alternatives, ensuring your creations stand the test of time. Engineered for Smoothness: The mirror-like finish isn't just for looks. It significantly reduces friction and heat buildup, which contributes to higher efficiency, faster speeds, and a longer lifespan for both the balls and the components they interact with. Material: Chrome Steel Precision Grade: G25 Diameter: 3mm Hardness: ≥ HRC 60 Finish: Mirror Polished Quantity: 500 Pieces Professional & Industrial: Precision bearings, load cells, valves, pumps, and industrial machinery maintenance. Sports & Hobbies: Bicycle bearing refurbishment, skateboard wheels, fishing reels. Creative & DIY: Marble runs, kinetic sculptures, desk toys (fidget spinners), jewelry making, weighting doll limbs, and custom pendulum clocks. 500 Pieces x 3mm G25 Chrome Steel Bearing Balls, securely packaged in a durable, resealable bag to prevent loss and keep them organized. Tips: For safety, please store these parts away from children under 5 years old.

Brand: CHAMDONE


Material: Carbon Steel


Item dimensions L x W x H: 0.12 x 0.1 x 0.12 inches


Item Weight: 0.12 Pounds


Item Thickness: 3 Millimeters


Brand Name: CHAMDONE


Bearing Type: Ball Bearing


UPC: 614537852614


Part Number: 3mm


Manufacturer: CHAMDONE


Included Components: 3mm 500pcs


Item Dimensions: 0.12 x 0.1 x 0.12 inches


Item Weight: 0.12 Pounds


Item Thickness: 3 Millimeters


Outside Diameter: 3 Millimeters


Material Type: Carbon Steel


Compatible Lubricant: Oil or Grease


Specification Met: Iso 3290


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 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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Similar Products

Top Amazon Reviews

    • Why didn't I think of that?
Size: 360pcs - 5.5mm Style: Stainless Steel
Putting a small BB or ball bearing in those small costly mini/fig paint bottle,,,,make sure you cut the paint to with acrylic medium and add some wash so you can keep those bottles from drying up,,,,like a can of spray paint! Now why didn't I think of that?
Reviewed in the United States on March 17, 2026 by The unseen
    • They work well, for now.
Size: 100Pcs - 6.35MM Style: Stainless Steel
They work. But we'll see how well they last over time.
Reviewed in the United States on April 5, 2026 by Magic O
    • Uniform little steel balls that are great for repairs and projects
Size: 500Pcs - 3MM Style: Stainless Steel
I picked up this bulk pack of 3 millimeter chrome steel balls for a mix of repairs and tinkering. Between 3D printer projects, small casters, and the occasional rescued drawer slide, having a stash of consistent bearings on hand has already paid off. The first thing I checked was uniformity. Randomly sampling these with calipers, I am seeing consistent diameter readings across pieces. They feel identical when rolled between fingers, with no odd flats or rough spots. The spheres are satisfyingly smooth and reflective, which is what you want from hardened chrome steel intended for bearing use. In actual repairs, they have done exactly what they need to do. I rebuilt a sticky keyboard tray slide that had lost several original bearings, and the motion went from crunchy to smooth after repacking with these. I also used a handful in a simple lazy Susan style turntable for painting small parts. Rotation is even and there is no sense of one ball catching or dragging more than the others. The surface appears to have a very thin oil film from manufacturing, which is normal for this kind of steel component. It wipes off easily with a rag if you want a squeaky clean feel, or you can leave a bit of lubrication for applications where corrosion resistance matters. I have not seen any orange discoloration developing on the pieces I left exposed in the garage area of my apartment, even with humidity swings. None of my uses push these anywhere near their theoretical load limits, but for household and hobby tasks they feel overbuilt. Even dropping them from a height onto tile leaves them unmarked. Magnets pick them up readily, which is helpful when one inevitably escapes onto the floor and a cat decides it is a new toy. With 500 pieces in the container, I do not have to ration or worry about running out any time soon. For anyone who likes fixing things instead of throwing them away, or who builds jigs and mechanisms as part of DIY projects, this is the kind of consumable that is good to keep in the shop. The consistency and hardness live up to the “precision” label, so it earns a full five stars from me. ... show more
Reviewed in the United States on January 28, 2026 by Amazon Customer
    • High-quality precision bearing balls – excellent for DIY and industrial use
Size: 500Pcs - 3MM Style: Stainless Steel
These G25 3mm chrome steel bearing balls are exactly what I needed for both hobby projects and small machinery repairs. The balls are mirror-polished, perfectly round, and extremely hard—ideal for bearings, mechanical assemblies, or any DIY applications requiring precision components. The set of 500 pieces is generous and well-packaged, making it easy to grab what you need without worrying about shortages. The consistency in size and finish is impressive; every ball I’ve checked meets the 3mm spec with no noticeable imperfections. They’re also very wear-resistant, so they hold up well under repeated use or rotational stress. Whether you’re building a model, repairing a bearing, or using them for engineering experiments, these balls feel professional-grade and reliable. If you need small, high-precision steel balls in bulk, this set is an excellent value. Solid, durable, and precise—highly recommended. ... show more
Reviewed in the United States on January 7, 2026 by Paige Turner

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