Wheels Manufacturing Grade 300
Grade 300
Grade 300
Grade 300
Grade 300
Wheels Manufacturing

Wheels Manufacturing Grade 300

In Stock

Wheels Manufacturing Grade 300 steel ball retainers — bag of 10 (1/4" x 9). Reliable, factory-grade replacement balls for hub rebuilds, wheel building and general bearing service.

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Available Options

Option Price Availability
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 1/4'' x 9 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 5/16'' x 12 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 5/16'' x 9 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 1/4 ''x 7 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 3/16''x7 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 5/16''x10 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 5/32''x16 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 5/32''x20 — In Stock
Wheels Manufacturing, Grade 300 Ball Retainers, Bag of 10, 5/32''x22 — In Stock

Product Details

Overview & Technology

Wheels Manufacturing Grade 300 Ball Retainers (Product #090704, Mfg. Part BALLRET1/4x9) are a simple, dependable solution for small-bearing service and wheel rebuilding. This SKU is a bag of 10 steel balls sized 1/4" x 9 suitable for a wide range of bicycle cup-and-cone and retainer-style assemblies. Shipping dimensions are compact (4" x 4" x 0.5") and the package weighs just 0.1 lb. Grade 300 indicates consistent manufacturing and roundness suitable for bicycle service parts — not ultra-precision aerospace grade, but engineered to perform reliably in hubs, pedals, and other rotating assemblies. The steel construction balances durability and cost-effectiveness for routine maintenance and rebuilds.

Key Features

Durable steel construction: Each ball is made from hardened steel for wear resistance under typical cycling loads, providing long life in hub cups and cones when properly greased. Steel balls are the standard choice for most bicycle bearing applications because they tolerate repeated service and shock loads. Pack of 10 – convenient for mechanics: Ten balls per bag make it easy to service small hub sets, pedals, or other assemblies without buying bulk. The compact packaging keeps parts organised in a workshop or field kit.

Fit & Compatibility

This variant is the 1/4" x 9 size, compatible with many older and modern cup-and-cone hub designs and bearings that specify that ball diameter and count. Wheels Manufacturing also offers nearby sizes in this line: 5/16" x 12, 5/16" x 9, 1/4" x 7, and 3/16" x 7 — check your hub or bearing spec to match diameter and count. When replacing balls, confirm the diameter and the number your hub requires. These retainers are intended for standard bicycle service use; if your application requires sealed cartridge bearings or ceramic balls, choose those specific replacements instead.

Who It's For

This product is ideal for home mechanics, wheel builders, and bike shop techs who want an economical, reliable supply of service balls for hub rebuilds and repairs. The Grade 300 balls are well suited for riders and mechanics working on mountain bikes, where frequent wheel service and robust components are common. If you build wheels, maintain a workshop, or keep a parts kit for race day or trail-side repairs, these ball retainers are a practical, low-cost item to have on hand.

Key Features

  • ✓ Grade 300 steel balls for consistent roundness and reliable service
  • ✓ Bag of 10 — ideal quantity for minor hub rebuilds and repairs
  • ✓ Size 1/4" x 9 — compatible with many cup-and-cone hub applications
  • ✓ Compact packaging: 4" x 4" x 0.5", lightweight 0.1 lb
  • ✓ Made by Wheels Manufacturing — trusted bicycle parts supplier
  • ✓ Economical replacement option for home mechanics and shops

Specifications

Bearing Grade Grade 300
Bearing Dimensions 1/4'' x 9
Material Steel

Product Identifiers

Vendor Item # BALLRET1/4x9
UPC 836572003398

Frequently Asked Questions

What does Grade 300 mean?

Grade 300 refers to the manufacturing grade and quality level used by Wheels Manufacturing for these balls. It denotes consistent size and roundness appropriate for bicycle service parts; this grade is durable and cost-effective for hubs and other cycling applications.

How many balls do I need for a hub rebuild?

The number of balls varies by hub model — common front hubs often use 9 or 10 balls per race, while rear hubs can require more. Check your hub spec or count the existing balls; this product is sold as a bag of 10 for small jobs or partial replacements.

Are these compatible with sealed cartridge bearings?

No. These loose balls are intended for cup-and-cone or retainer-style bearing systems. Sealed cartridge bearings are pre-assembled and not serviceable with loose balls; replace sealed cartridges as a unit.

Can I use these on mountain bikes?

Yes. These steel Grade 300 balls are commonly used in mountain bike hubs, pedals, and other rotating assemblies that accept loose-ball systems. For heavy-duty downhill or enduro gravity use consider checking load and wear requirements and inspecting more frequently.

Do steel balls rust or need special care?

Steel balls can rust if left exposed to moisture. Use fresh grease during assembly, seal bearings where possible, and inspect periodically. For corrosive environments or salt-sprayed bikes, consider stainless or ceramic options if corrosion is a primary concern.

What other sizes are available in this line?

Wheels Manufacturing offers several variants in Grade 300 ball retainers, including 5/16" x 12, 5/16" x 9, 1/4" x 7, and 3/16" x 7. Match the diameter and count to your hub specification before purchase.

Buying Guide

When buying loose ball retainers, measure the ball diameter and confirm the number of balls required by your hub. Match the diameter (for example 1/4" x 9) and choose the correct pack size to avoid multiple small orders. Grade 300 steel balls are a cost-effective, reliable choice for most bicycle cup-and-cone applications. Consider environment and usage: if you ride in corrosive conditions or demand the lowest possible friction, explore stainless or ceramic alternatives. For routine mountain bike maintenance and shop repairs, Grade 300 steel balls offer the best balance of durability, availability, and price.

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