100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision
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100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision

100pcs G10 Ball Bearings Size 1mm-10mm Bike Bicycle Loose Bearing High Precision

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Beschreibung

G10 Loose Ball Bearings 1mm–10mm — Precision Fit for Bikes, Skates & DIY Builds

When a worn or undersized bearing causes your wheel hub to wobble, your skateboard to drag, or your DIY mechanism to bind, finding the exact diameter matters. Cyclists, skaters, and hands-on builders who need a reliable stock of G10 loose ball bearings in a wide size range will find this pack covers the most common replacement and custom-build scenarios.

Each pack contains 100 pieces of G10-grade chrome steel loose ball bearings. Available in diameters from 1.0mm to 10mm (approximately 0.039 in to 0.394 in), these bearings are sold as individual loose balls — not pre-assembled in a race — making them suitable for direct drop-in replacement or custom cage assemblies. Select your exact diameter from the variant options above.

Typical use cases include bicycle wheel hub repacking, BMX and road bike bottom bracket service, inline skate and skateboard wheel bearing replacement, and small-scale mechanical or robotics projects requiring G10 precision loose ball bearings in metric or near-imperial sizes.

🔧 Compatibility: Suitable for open-race bearing housings designed for loose ball repacking. Verify your hub or housing inner diameter before selecting a size. Not pre-assembled in a bearing race.

✅ Key Features of These G10 Loose Ball Bearings

  • ⚙️G10 Grade Precision — Manufactured to ABEC G10 tolerance standards, delivering consistent roundness and diameter accuracy across the full 1mm–10mm size range.
  • 🔩Chrome Steel Construction — Made from chrome steel (GCr15 equivalent) for a balance of hardness, wear resistance, and load-bearing capacity suited to cycling and mechanical applications.
  • 📦100-Piece Pack — Each order ships as a 100-piece lot of a single selected diameter, giving you enough stock for full hub repacks or multiple repair jobs.
  • 📐Wide Size Selection — Available in over 100 distinct diameters from 1.0mm to 10mm, including fractional metric sizes (e.g. 3.175mm, 6.35mm) that correspond to common imperial equivalents.
  • 🚲Bike & Skate Ready — Sized to match standard loose-ball bearing specifications found in cup-and-cone bicycle hubs, headsets, bottom brackets, and inline skate wheel cores.
  • 🛠️Loose Ball Format — Supplied as individual balls without a retainer cage, allowing direct repacking into open-race housings or custom bearing assemblies.

📐 Technical Specifications — G10 Loose Ball Bearings

Grade G10
Material Chrome steel (GCr15 equivalent)
Diameter Range 1.0mm – 10mm (approx. 0.039 in – 0.394 in)
Exact Diameter See variant options
Quantity per Pack 100 pieces
Bearing Type Loose ball (no race, no cage)
Finish Bright / polished chrome steel
Hardness Typically HRC 60–66
Weight (per pack) See variant options
Application Bicycle hubs, headsets, bottom brackets, skate wheels, mechanical assemblies

❓ Frequently Asked Questions

How do I choose the correct ball bearing diameter for my bike hub?

Remove the existing balls from your hub and measure one with a digital caliper. Match that measurement to the diameter listed in the variant selector. For cup-and-cone hubs, the front hub typically uses balls in the 3.0mm–5.0mm range and the rear hub in the 4.0mm–6.0mm range, but always verify with your specific hub model. When in doubt, consult your hub manufacturer's service manual.

What does G10 grade mean, and is it strong enough for cycling use?

G10 refers to the roundness tolerance grade defined by ISO 3290. A G10 ball has a maximum deviation from a perfect sphere of 0.25 micrometers per millimeter of diameter. This grade is widely used in bicycle hubs, headsets, and bottom brackets and provides adequate precision for recreational and performance cycling loads under normal operating conditions.

Are these bearings corrosion-resistant for wet-weather riding?

These balls are made from chrome steel, which offers good hardness and wear resistance but limited corrosion resistance compared to stainless steel. For wet-weather or coastal riding, apply a quality bearing grease after installation and re-grease periodically. If you ride frequently in rain or mud, consider stainless steel loose balls for longer service intervals.

Can I use these in skateboard or inline skate wheel bearings?

Yes, provided your wheel uses an open-race or cup-and-cone bearing design that accepts loose balls. Most modern skateboard wheels use sealed cartridge bearings (608-type) that are not repacked with loose balls. Inline skate wheels with serviceable cup-and-cone hubs can use loose balls — check your wheel's service documentation for the correct ball diameter, typically in the 3mm–5mm range.

How many balls do I need to repack a standard bicycle front hub?

A typical cup-and-cone front hub uses 9–11 balls per side (18–22 total). A 100-piece pack is sufficient to repack both sides of one front hub with balls to spare for future maintenance. Rear hubs vary more widely — count the existing balls before ordering to confirm quantity. The exact number depends on ball diameter and hub cup geometry.

What is the difference between the fractional metric sizes like 3.175mm and 3.0mm?

3.175mm is the metric equivalent of 1/8 inch (25.4 ÷ 8 = 3.175). Many older or American-standard bicycle components were designed around imperial ball sizes, so hubs specifying "1/8 inch balls" require 3.175mm, not 3.0mm. Using the wrong diameter — even by 0.175mm — can cause premature wear or incorrect bearing preload. Always match the diameter to your hub's specification exactly.

🛒 Select your Ball Bearing Size and Pack Size above, then add to cart.

 

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