The Tange-Seiki LN-7922 is a traditional square-taper cartridge bottom bracket designed for frames with standard threaded shells. It is compatible with JIS square-taper cranksets, making it a dependable choice for road, city, touring and fixed-gear bicycles.

Sealed Cartridge Bearing System: This bottom bracket uses a sealed cartridge bearing unit that protects the internals from dirt, moisture and road grime. The enclosed design delivers smooth rotation and consistent performance with minimal maintenance.

Durable and Lightweight Construction: Built with a strong alloy body and threaded cups, the LN-7922 balances durability with reduced weight. The square-taper spindle is engineered to provide reliable stiffness and long service life under everyday riding conditions.

Wide Compatibility for Everyday Builds: Designed to work with commonly used threaded frames and cranksets, this bottom bracket is ideal for restorations, commuter bikes and practical performance builds where reliability is more important than complexity.

The LN-7922 offers smooth operation, easy installation and long-term dependability, making it a trusted solution for riders who prefer proven square-taper systems.

Features

• JIS Square-Taper Compatibility: Designed to work seamlessly with JIS square-taper cranksets used on road, city, touring and fixed-gear bikes.
• Sealed Cartridge Bearing System: Enclosed cartridge bearings protect against dirt and moisture, ensuring smooth rotation with minimal maintenance.
• CNC-Machined Cr-Mo Axle: Fully CNC-machined hollow chromoly axle delivers dependable stiffness, strength and long service life.
• Lightweight Alloy Construction: Light alloy body and aluminium cups balance durability with reduced overall weight.
• Proven Everyday Reliability: Ideal for restorations and commuter builds where simplicity, durability and consistency matter most.

Specifications

• Product Type: Cartridge Bottom Bracket
• Bearing Type: Sealed Cartridge Bearing
• Intended Use: Road, City, Touring, Fixed-Gear Bicycles
• Axle Interface: Square Taper
• Standard: JIS
• Axle Material: Cr-Mo Hollow Axle (CNC Machined)
• Cup Material: Aluminium
• Shell Type: Threaded
• Thread Standard: English BSA
• Thread Specification: 1.37 x 24T
• Shell Width: 68 mm
• Size: 68x107 mm, 68x118 mm