Detailed Information:

1. Axle Design:

   • This bottom bracket axle uses a square taper interface, a common system for ensuring a tight fit between the crank arms and the bottom bracket spindle. It offers good durability and strong power transfer, making it suitable for a variety of cycling needs.

2. Bolt Style:

   • The bolt-style attachment for the crank arms allows for a more secure and straightforward installation compared to the nut style. This design is easier to maintain and provides a reliable connection between the axle and the crank arms.

3. Dimensions:

   • Left Side: 30.5mm
   • Center: 52mm
   • Right Side: 30.5mm
   • These balanced dimensions help maintain proper crank spacing and chainline alignment for bicycles using a 113mm bottom bracket.

4. Axle Length:

   • The primary axle length is 113mm, a size frequently used in road bikes, hybrid bikes, and some mountain bikes. This length provides the right balance between crank clearance and chainline efficiency.
   • The overall length including bolt heads is 134mm, ensuring the axle extends adequately through the crank arms for secure bolting.

5. Material:

   • Made from high-strength steel, this axle is built to withstand rigorous forces during pedaling. Steel is the preferred material for bottom bracket spindles due to its durability and resistance to deformation under stress.

6. Color:

   • The axle is finished in black, which not only adds to its aesthetic appeal but also offers an additional layer of protection against corrosion and wear.

7. Compatibility:

   • The 113mm axle is widely compatible with many road bikes, track bikes, and commuter bikes. Its length and bolt style make it suitable for frames that need a slightly wider bottom bracket than the narrowest available options (e.g., 108mm), while still maintaining a tight chainline.

8. Application:

   • The 113mm length is often found in bikes that require a balance between crank arm spacing and chain alignment, particularly in road and hybrid bikes. It is also compatible with bikes using the square taper crankset system, which is popular in many types of bicycles.

9. Axle Length and Chainline:

   • The left and right lengths of 30.5mm each, combined with a 52mm center, provide optimal crank arm spacing for a proper chainline. This design helps ensure that the crankset aligns correctly with the rear cassette or freewheel, preventing issues with shifting or chain rubbing.

Brand:

• AltaLine: AltaLine is known for producing reliable, high-quality bicycle components. Their bottom bracket axles, including this 113mm version, are designed for strength, durability, and ease of installation, making them a trusted brand among cyclists and bike mechanics.

Benefits:

• Durability: Made from high-strength steel, this axle offers long-lasting performance and resistance to wear and deformation under heavy pedaling forces.
• Corrosion Resistance: The black finish provides additional protection against rust, extending the axle's life, especially in harsh weather or moisture-prone environments.
• Compatibility: Its 113mm length makes it versatile and suitable for a wide range of bike types, particularly road and hybrid models requiring a moderately wide bottom bracket setup.
• Bolt-Style Design: The bolt-style attachment allows for easier installation and maintenance, ensuring a secure fit for the crank arms.

Ideal For:

• Road Bikes: The 113mm length is commonly used in road bikes for proper crank arm spacing and efficient chainline.
• Hybrid/Commuter Bikes: This axle is a good fit for hybrid or commuter bikes where strength and reliability are needed for daily use.
• Track Bikes: Its bolt-style square taper design is also suitable for track bikes where durability and a tight chainline are essential.