1.0mm-10.5mm Carbon Steel Ball-Gcr15 Steel Ball Bearing Replacement Bearings

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1.0mm-10.5mm Carbon Steel Ball-Gcr15 Steel Ball Bearing Replacement Bearings

Name: 1.0mm-10.5mm Carbon Steel Ball-Gcr15 Steel Ball Bearing Replacement Bearings
Brand: HomeDIYer
Price: 3.6 USD
Availability: InStock

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By HomeDIYer®

Material:: Carbon Steel

Diameter:: 1.0mm

Packing Qty:: 5pcs

Price:

$3.60 USD

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In stock (500 units), ready to be shipped

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Carbon Steel & Gcr15 Replacement Ball Bearings — Precision Fit for DIY and Workshop Use

When a worn or damaged bearing ball causes wobble, noise, or premature failure in your tools, wheels, or mechanical assemblies, finding an exact-size replacement matters. These carbon steel and Gcr15 steel ball bearings are stocked by DIYers, hobbyists, machinists, and repair technicians who need reliable, dimensionally consistent balls without ordering in bulk from industrial suppliers.

Available in two materials — standard Carbon Steel for general-purpose applications and Gcr15 high-carbon chromium bearing steel for higher-load or longer-service scenarios — these balls span diameters from 1.0mm (approx. 0.039 in) to 10.5mm (approx. 0.413 in), including the 9.525mm (3/8 in) imperial size. Packing quantities of 5, 10, 50, and 100 pieces let you order exactly what a repair or project requires.

Typical use cases include replacing balls in skateboard and inline skate bearings, bicycle hub and headset bearings, small electric motor bearings, drawer slide mechanisms, and precision instrument pivots — anywhere a specific ball diameter must be matched to an existing race or housing.

⚙️ Compatibility: Designed as replacement balls for standard open or shielded bearing housings. Match the diameter precisely to your existing bearing race. Not pre-assembled into bearing units.

✅ Key Features of These Carbon Steel & Gcr15 Replacement Ball Bearings

📐 Wide Diameter Range

Covers 1.0mm through 10.5mm in 0.5mm increments, plus the 9.525mm (3/8") imperial size — 21 diameter options in one listing.

🔩 Two Material Grades

Carbon Steel suits general-purpose, lower-load applications. Gcr15 (high-carbon chromium steel) offers higher hardness and fatigue resistance for demanding cycles.

📦 Flexible Pack Sizes

Choose 5, 10, 50, or 100 pieces per order — ideal for single repairs, small batch restocks, or workshop inventory.

🎯 Consistent Dimensional Accuracy

Balls are ground to close tolerances to seat correctly in standard bearing races without play or binding.

🔄 Broad Application Fit

Suitable for skate bearings, bicycle hubs, small motors, drawer slides, instrument pivots, and other assemblies requiring loose replacement balls.

🛡️ Hardened Surface Finish

Heat-treated for surface hardness, reducing wear rate and extending service life in rolling contact applications.

📐 Technical Specifications — Replacement Ball Bearings

Material Options	Carbon Steel / Gcr15 (High-Carbon Chromium Bearing Steel)
Diameter Range	1.0mm – 10.5mm (including 9.525mm / 3/8")
Available Diameters	1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 9.525, 10.0, 10.5 mm
Packing Quantities	5 pcs / 10 pcs / 50 pcs / 100 pcs
Surface Treatment	Heat-treated, ground finish
Ball Form	Loose replacement balls (not pre-assembled)
Typical Applications	Skate bearings, bicycle hubs, small motors, drawer slides, instrument pivots
Imperial Equivalent (9.525mm)	3/8 inch
Tolerance Grade	See variant options
Load Rating	See variant options

❓ Frequently Asked Questions

How do I find the correct ball diameter for my bearing?

Remove one ball from the existing bearing and measure its diameter with a digital caliper. Match that measurement to the closest size in this listing. For imperial bearings, the 9.525mm option equals the standard 3/8" ball used in many bicycle and skateboard applications.

What is the difference between Carbon Steel and Gcr15?

Carbon Steel is a general-purpose bearing steel suitable for light to moderate loads and standard operating conditions. Gcr15 is a high-carbon chromium alloy steel with greater hardness and fatigue resistance, making it a better choice for higher-load, higher-cycle applications such as bicycle hubs or precision instrument bearings.

Are these balls corrosion-resistant?

Both Carbon Steel and Gcr15 are ferrous materials and will oxidize if exposed to moisture without lubrication or protective coating. For wet or outdoor environments, apply a suitable bearing grease after installation, or consider stainless steel balls for your application. Contact us to confirm if stainless options are available for your size.

Can I use these balls in a sealed or shielded bearing?

Yes, provided the bearing housing is designed to be opened for ball replacement. These are loose replacement balls intended for open-type or serviceable bearing assemblies. They are not pre-assembled into bearing units with inner/outer races.

How many balls do I need for a typical bearing replacement?

The number of balls per bearing varies by bearing size and type — typically 6 to 12 balls for small skateboard or bicycle bearings. Count the existing balls before ordering, then select the 5-pack, 10-pack, 50-pack, or 100-pack accordingly. For a single bearing repair, the 5- or 10-piece pack is usually sufficient.

What packing quantity should I choose?

Choose 5 or 10 pcs for a single repair or prototype. Select 50 or 100 pcs if you service multiple bearings regularly, maintain workshop stock, or work in a repair shop environment where the same size is used frequently.

Are these balls compatible with both metric and imperial bearing housings?

Most sizes are metric. The 9.525mm option is the metric equivalent of the 3/8" imperial ball and fits standard 3/8" bearing races. For other imperial sizes, measure your existing ball in millimeters and match to the closest available diameter in this listing.

🛒 Select your Material, Diameter, and Packing Qty above, then add to cart.

1.0mm-10.5mm Carbon Steel Ball-Gcr15 Steel Ball Bearing Replacement Bearings

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Description

Carbon Steel & Gcr15 Replacement Ball Bearings — Precision Fit for DIY and Workshop Use

✅ Key Features of These Carbon Steel & Gcr15 Replacement Ball Bearings

📐 Technical Specifications — Replacement Ball Bearings

❓ Frequently Asked Questions

1.0mm-10.5mm Carbon Steel Ball-Gcr15 Steel Ball Bearing Replacement Bearings

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