SHIMANO BB-UN72-E Cartridge Bottom Bracket Square Taper Axle 68

( Brand: Shimano ), ( Manufacturer Part Number: BB-UN72-E ), ( Part Type: Cartridge Bottom Bracket ), ( Set Includes: Bottom Bracket ), ( Spindle Type: Square Taper Jis ), ( Shell Width: 68 Mm ), ( Material: Aluminum, Steel ), ( Color: Silver ), ( Compatible Bike Type: Universal ), ( Item Length: 111 Mm )

Review SHIMANO Sealed Cartridge Bottom Bracket 68 Square Taper Axle

Shimano BB-UN72-E Cartridge Bottom Bracket (68 Square Taper Axle)

Experience the seamless integration of performance and durability with the Shimano BB-UN72-E Cartridge Bottom Bracket. This precision engineered component is designed to deliver unparalleled efficiency and longevity for your bicycle, ensuring a smooth and dependable ride every time.

The BB-UN72-E is a part of Shimano's renowned line of bottom brackets, known for their exceptional quality and reliability. This cartridge bottom bracket is specifically designed for 68mm square taper axle frames, making it a versatile choice for a wide range of cycling applications.

The cartridge design offers quick and easy installation, as well as simplicity in maintenance. The bearings are enclosed within a protective, removable outer cup, making it easy to swap out worn parts without the need for complex tools or extensive mechanical knowledge.

The BB-UN72-E features high-quality, durable bearings that are designed to withstand the rigors of cycling, providing a long lifespan and maintaining smooth rotation even under heavy loads. The square taper axle offers excellent power transfer, ensuring that every ounce of your pedal power is translated into forward momentum.

With the Shimano BB-UN72-E Cartridge Bottom Bracket, you can confidently take on your next cycling adventure, knowing that your bike's drivetrain is as reliable and efficient as it can be. Upgrade your bike today and experience the performance and dependability that Shimano is known for.

Shimano BB-UN72-E Cartridge Bottom Bracket (68 Square Taper Axle) - Pros, Cons, and Recommendation

The Shimano BB-UN72-E Cartridge Bottom Bracket with a 68 square taper axle is a popular choice among cyclists due to its combination of durability, ease of installation, and compatibility with various Shimano cranksets. Here are some key points to consider before making a purchase.

1. Durability: Shimano is renowned for its high-quality components, and the BB-UN72-E is no exception. It is built to withstand the rigors of daily cycling, ensuring a long service life.

2. Easy Installation: This cartridge bottom bracket can be easily installed without requiring any special tools, which saves time and effort.

3. Compatibility: The 68 square taper axle makes it compatible with a wide range of Shimano cranksets, ensuring that it can be used on many different types of bicycles.

4. Smooth Performance: Shimano's bearings are known for their smoothness, providing a comfortable and efficient riding experience.

1. Limited Compatibility: While the BB-UN72-E is compatible with many Shimano cranksets, it may not be suitable for bicycles with different bottom bracket standards.

2. Cost: Compared to lower-end bottom brackets, the BB-UN72-E may be more expensive, which could be a deterrent for budget-conscious cyclists.

3. Not Sealed: Unlike some high-end cartridge bottom brackets, the BB-UN72-E is not sealed, which means it may require more frequent maintenance, especially in dusty or wet conditions.

The Shimano BB-UN72-E Cartridge Bottom Bracket with a 68 square taper axle is a reliable and easy-to-install option for cyclists using Shimano cranksets. Its durability and smooth performance make it a worthy investment for those seeking a high-quality bottom bracket. However, potential buyers should be aware of its limited compatibility and the need for regular maintenance.

If you are looking for a durable, easy-to-install, and compatible bottom bracket for your Shimano-equipped bicycle, the Shimano BB-UN72-E is a solid choice. However, if you are on a tight budget or require a sealed bottom bracket, you may want to explore other options. Always ensure that the bottom bracket you choose is compatible with your bicycle's frame before making a purchase.

Details:

Approximate weight per scale photo: 285 grams. Details: Sealed cartridge unit with black threaded cups, steel axle, and left/right orientation arrows on the body; designed for bottom bracket shells road, touring, or mountain bikes using square taper cranks. Previously installed bottom bracket with visible cosmetic wear, tool marks, and light surface rust on cups axle flats. Model: BB-UN72-E sealed cartridge bottom bracket unit.

Type: Square taper JIS bottom bracket for compatible crank sets; includes both crank fixing bolts and washers as shown. Country of manufacture: Japan label reads JAPAN and PAT. Approximate spindle length per digital caliper display in photos: about 111.5mm. Shimano BB-UN72-E Sealed Cartridge Bottom Bracket 111 68 Square Taper Axle.

Brand: Shimano. Threads appear intact and both crank bolts washers are included; no original packaging. Spins smooth by hand as noted, with no grinding felt.

part #: bbun72 prices

• $20.00-$59.00

specifications ribicycl:

• brand: Shimano
• mpn: Bb-un72-e
• part type: Cartridge Bottom Bracket
• set includes: Bottom Bracket
• spindle type: Square Taper Jis
• shell width: 68 Mm
• material: Aluminum, Steel
• color: Silver
• compatible bike type: Universal
• item length: 111 Mm

offer ribicycl:

• quantity: 1
• best offers: True
• started: November 23, 2025
• sold: 0
• availability: In Stock
• options: Ship-to-home

returns ribicycl:

• paid by: Seller
• time: 60 Days
• method: Money back
• policy: Returns Accepted

shipping ribicycl:

• type: Fixed
• service: USPS Ground Advantage, USPS Priority Mail, FedEx Ground / FedEx Home Delivery
• carrier: USPS, FedEx
• cost: $9.97
• class: Standard, Expedited
• transit: 5-9 Days

seller ribicycl:

• rating: 100.0%
• # reviews: 27830
• city: Neenah, Wisconsin

general ribicycl:

• Cycling > Bicycle Components Parts > Bottom Brackets
• condition: Used

payments ribicycl:

• credit card: Mastercard
• other
• wallet: Paypal

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