Wheels Manufacturing Sealed Bearings ABEC 3
Sealed Bearings ABEC 3
Sealed Bearings ABEC 3
Sealed Bearings ABEC 3
Sealed Bearings ABEC 3
Wheels Manufacturing

Wheels Manufacturing Sealed Bearings ABEC 3

In Stock

Wheels Manufacturing SB-6901 sealed cartridge bearings are ABEC 3 steel replacements (12x24x6mm) offering reliable, low-maintenance performance and broad hub compatibility.

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Available Options

Option Price Availability
Wheels Manufacturing, SB-6901-2RS sealed bearings, 12X24X6mm, Bag of 2 — In Stock
Wheels Manufacturing, SB-6001 sealed bearings, 12x28x8mm, Bag of 2 — In Stock
Wheels Manufacturing, SB-6902-2RS sealed bearings, 15X28X7mm Bag of 2 — In Stock
Wheels Manufacturing, SB-6803 sealed bearings, 17x26x5mm, Bag of 2 — In Stock
Wheels Manufacturing, SB-6806 sealed bearings, 30x42x7mm, Bag of 2 — In Stock
Wheels Manufacturing, Sealed bearing, 24x37x7mm, Bag of 2 — In Stock
Wheels Manufacturing, Sealed Bearings ABEC 3, Sealed Cartridge Bearing, MR 22378, 22x37x8mm, Steel — In Stock
Wheels Manufacturing, Sealed Bearings ABEC 3, Sealed Cartridge Bearing, 6806/29, 29x42x7mm, Steel, 2pcs — In Stock
Wheels Manufacturing, Sealed Bearings ABEC 3, Sealed Cartridge Bearing, MR 17287, 17x28x7mm, Steel, 2pcs — In Stock
Wheels Manufacturing, Sealed Bearings ABEC 3, Sealed Cartridge Bearing, MR 18307, 18x30x7mm, Steel, 2pcs — In Stock

Product Details

Overview & Technology

Wheels Manufacturing SB-6901 sealed cartridge bearings are engineered as first-quality replacement units for bicycle hubs and other rotating parts. Each bearing is a 12x24x6mm, ABEC 3-grade steel cartridge designed to restore smooth rolling and reduce play in wheel hubs, freewheels, and small pivots. The sealed cartridge design traps factory grease inside and keeps contaminants out with integrated seals, lowering maintenance and extending service intervals. Constructed from hardened steel races and precision ground balls, these bearings deliver predictable, durable performance for shop repairs and weekend rebuilds.

Key Features

Durable steel construction: Hardened steel races and balls provide wear resistance and long life under load. The steel material offers reliable strength for hub and drivetrain applications. Sealed cartridge design: Integrated seals retain lubricant and block grit and moisture, making these bearings ideal for wet, muddy, or dusty conditions where longevity matters. ABEC 3 tolerances balance cost and performance for everyday cycling use. • Dimensions: 12 x 24 x 6 mm (6901) • Bearing Grade: ABEC 3 — consistent rolling accuracy • Sealed to minimize maintenance and contamination

Fit & Compatibility

These SB-6901 units are intended as direct replacements for hubs and components that use 12x24x6mm bearings. Wheels Manufacturing designs these to fit most hub shells and axle interfaces currently in use, but always verify the bearing number stamped in your hub or component before ordering. Available in multiple related sizes and variants (for example SB-6901-2RS, SB-6001, SB-6902-2RS) to match common hub standards. For press-fit hubs, use a bearing press or appropriately sized drift to avoid race damage; for cartridge-style cups, check cup/axle clearances and torque specs during reassembly.

Who It's For

This bearing is ideal for riders and mechanics who want a dependable, affordable hub service part. Mountain bikers, trail riders, and shop techs will appreciate the sealed design and robust steel construction for demanding, all-weather use. If you rebuild hubs at home or service bikes in a shop, SB-6901 gives a reliable way to restore smoothness and remove play without buying an expensive hub rebuild kit. Choose this if you need a tried-and-true replacement bearing that balances durability and price.

Key Features

  • ✓ 12 x 24 x 6 mm dimensional fit for common hub applications
  • ✓ ABEC 3 precision for smooth, consistent rolling performance
  • ✓ Sealed cartridge design keeps grease in and dirt out
  • ✓ Hardened steel races and balls for long-lasting durability
  • ✓ OE-quality replacement trusted by workshops and home mechanics
  • ✓ Available as bag of two for axle or hub pair replacements
  • ✓ Fits most modern hubs using 6901-spec bearings

Specifications

Bearing Grade ABEC 3
Number 6901
Bearing Dimensions 12X24X6mm
Material Steel

Product Identifiers

Vendor Item # SB-6901
UPC 836572002032

Frequently Asked Questions

What does ABEC 3 mean and does it matter for bike hubs?

ABEC 3 describes the bearing tolerance grade — a mid-range precision level suitable for bicycle hubs. For most cycling applications, ABEC 3 offers reliable smoothness and longevity; higher ABEC numbers give tighter tolerances but provide marginal real-world benefit for hub bearings.

Are these sealed bearings compatible with my hub?

Check your existing bearing for the 6901 marking or measure the inner diameter, outer diameter, and width (12x24x6 mm). If your hub specifies 6901 or a 12x24x6mm bearing, the SB-6901 is a suitable replacement. When in doubt, consult your hub manufacturer's spec or a shop mechanic.

How do I install sealed cartridge bearings without damaging them?

Use a proper bearing press or drift that contacts only the outer race when pressing into a cup, and only the inner race when installing onto an axle. Avoid hammering across the race faces to prevent brinelling; light, evenly distributed pressure is key. If you lack tools, have a bike shop press them for you.

Can I service or regrease these sealed bearings?

Sealed cartridge bearings are factory-packed with grease and not intended for routine regreasing. While some technicians may carefully remove seals to add grease, doing so can compromise the seal and reduce bearing life. Replacement is usually the preferred maintenance option.

How many bearings come in a pack?

Wheels Manufacturing offers these in variants including a bag of 2 for the SB-6901-2RS SKU. Individual listings may vary — check the variant you select. Having a pair is handy for replacing both sides of a hub at once.

What signs indicate I should replace my hub bearings?

Replace bearings if you feel roughness, grinding, lateral play at the hub, or noise under load. Excessive corrosion, pitting, or visible race damage are also clear signs that replacement will restore performance and prevent further hub damage.

Buying Guide

When buying sealed cartridge bearings, first confirm the exact bearing number or measure the inner diameter, outer diameter, and width (here 12x24x6mm for the 6901). Choose a seal type that matches your exposure — fully sealed units extend life in wet and muddy conditions. ABEC rating helps identify manufacturing tolerances; ABEC 3 provides a good balance of precision and value for most bicycle hubs. Also consider whether you need a single bearing or a bag of two for axle pairs. For press-fit installations, ensure you have the correct tools or plan a shop visit; installing bearings with improper tools can damage both the bearing and the hub. Finally, select a reputable brand like Wheels Manufacturing for consistent, shop-quality replacements.

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