Wheels Manufacturing Steel Ball Bearing
Steel Ball Bearing
Steel Ball Bearing
Steel Ball Bearing
Steel Ball Bearing
Wheels Manufacturing

Wheels Manufacturing Steel Ball Bearing

In Stock

Wheels Manufacturing steel ball bearings—precision Grade 300 balls in common hub sizes. Available in bottles of 500 or 250 for routine hub, pedal and bottom bracket service.

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Available Options

Option Price Availability
Wheels Manufacturing, Steel Ball Bearings, Bottle of 500, 5/32'' — In Stock
Wheels Manufacturing, Steel Ball Bearings, Bottle of 500, 3/16'' — In Stock
Wheels Manufacturing, Steel Ball Bearings, Bottle of 250, 1/4'' — In Stock
Wheels Manufacturing, 1/8'', Bottle of 250 — In Stock
Wheels Manufacturing, Steel Ball Bearing, 7/32'', Grade 25, Steel, 100pcs — In Stock
Wheels Manufacturing, Steel Ball Bearing, 1/4'', Grade 25, Steel, 150pcs — In Stock
Wheels Manufacturing, Steel Ball Bearing, 1/4'', Grade 25, Steel, 25pcs — In Stock
Wheels Manufacturing, Steel Ball Bearing, 3/16'', Grade 25, Steel, 25pcs — In Stock
Wheels Manufacturing, Steel Ball Bearing, 5/32'', Grade 25, Steel, 150pcs — In Stock
Wheels Manufacturing, Steel Ball Bearing, 3/16'', Grade 25, Steel, 150pcs — In Stock

Product Details

Overview & Technology

Wheels Manufacturing steel ball bearings are precision-formed, Grade 300 steel spheres supplied in convenient bottles for fast workshop use. Available in the common hub and pedal diameters—5/32", 3/16" and 1/4"—they give a consistent, serviceable replacement option for wheel hubs, cup-and-cone systems, pedals and many vintage drivetrains. Each ball is cold-formed and finished to a uniform sphericity and hardness consistent with Grade 300 specifications. That repeatable geometry reduces friction, improves load distribution and extends service intervals compared with worn or mixed-size bearings.

Key Features & Benefits

Durable, consistent performance – Grade 300 steel provides a reliable balance of hardness and toughness for everyday and endurance riding. These balls resist surface fatigue under typical hub and pedal loads and maintain roundness under sustained use. Workshop-ready packaging – Bottles of 500 (5/32" and 3/16") and 250 (1/4" and 1/8") let mechanics replenish inventory without buying large bulk tubs. The compact bottle stores neatly in a parts drawer and keeps loose balls contained during rebuilds.

Fit, Sizes & Compatibility

These steel balls match standard British and ISO hub cup-and-cone systems and many pedal bearings. Choose size by the original bearing spec or by measuring the race diameter: 5/32" (3.97 mm), 3/16" (4.76 mm), 1/4" (6.35 mm) and 1/8" (3.175 mm) options are available. A 7/32" Grade 25 option and mixed-count packs also appear in the Wheels Manufacturing range for specialty uses. When rebuilding, replace with the same ball diameter and quantity the hub maker specifies. If you’re unsure, consult a service manual or count/remove balls from the old race to match quantities precisely—using incorrect ball size will damage races and shorten bearing life.

Who This Is For

This product is aimed at mechanics, racers and DIY riders who rebuild and maintain hubs, pedals and older bottom brackets. If you manage a fleet of bikes, run a shop, or prefer to keep a stocked parts drawer for trail repairs, the bottled quantities are optimized for frequent servicing. These steel balls are ideal for mountain riders who value reliable, affordable replacement bearings for rugged use—whether maintaining classic cup-and-cone hubs or servicing pedal bearings on a regular interval.

Key Features

  • ✓ Grade 300 steel for consistent hardness and wear resistance
  • ✓ Available sizes: 1/8", 5/32", 3/16", 1/4" for hub and pedal systems
  • ✓ Workshop bottles of 500 or 250 to reduce replenishment frequency
  • ✓ Precision-formed balls for improved roundness and smoother spins
  • ✓ Compact bottle keeps loose balls clean and organized in shop
  • ✓ Compatible with most cup-and-cone hubs and many pedal bearings
  • ✓ Also available in 7/32" Grade 25 and specialty-count packs

Specifications

Ball size 5/32''
Bearing Grade Grade 300
Material Steel

Product Identifiers

Vendor Item # BALL-2B
UPC 836572001158

Frequently Asked Questions

How do I choose the correct ball size for my hub?

Match the ball diameter to the original spec in your hub or pedal manual. If you don’t have the manual, remove and measure one of the old balls or the race diameter. Using the wrong size will cause poor fit and premature race or ball wear.

What does Grade 300 mean and does it matter?

Grade 300 is a bearing classification that describes dimensional tolerances and surface finish. For most bicycle hub and pedal applications, Grade 300 steel balls provide an excellent balance of precision and cost—offering smooth operation and long life in typical riding conditions.

How many balls do I need for a hub rebuild?

Ball count varies by hub model—common counts are 9–10 per side for many cup-and-cone hubs, but some hubs use more. Count the existing balls or consult the hub manufacturer. Bottles of 250 or 500 make it easy to stock the right quantity for multiple rebuilds.

Are these balls corrosion resistant?

These are standard steel balls—not stainless or ceramic—so they are susceptible to corrosion if exposed to water and contaminants. Use proper cleaning, drying and fresh grease during assembly; for coastal or extreme wet conditions consider stainless or ceramic alternatives.

Can I mix grades or sizes when rebuilding?

No—do not mix sizes or grades within the same race. Mixing creates uneven load transfer, increased friction and accelerated wear. Always install matching balls of the correct diameter and similar grade for best results.

What applications are these most commonly used for?

These steel balls are typically used in cup-and-cone wheel hubs, many pedal bearings, certain bottom bracket designs and other small rotating assemblies on bicycles. They're a standard replacement for routine maintenance and rebuilds.

Buying Guide

When buying replacement bearing balls, first confirm the diameter and the ball count your hub, pedal or BB requires. Choose the bottle size (250 or 500) based on how many rebuilds you plan—shops and frequent tuners benefit from the 500‑count bottles for 5/32" and 3/16" sizes. Decide between standard steel and specialty options (stainless or ceramic) based on your riding environment: steel Grade 300 is economical and durable for most mountain and trail conditions, while stainless or ceramic choices are better when corrosion resistance or minimal weight are priorities.

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