Shimano SG-8R31 Right lock nut

SHIMANO SG-8R31 Right Lock Nut for Nexus 8-Speed Hubs | Genuine Spare Part

Ensure the flawless performance and longevity of your bicycle´s drivetrain with the genuine SHIMANO SG-8R31 Right Lock Nut. This essential spare part is specifically engineered for maintaining and repairing Shimano´s sophisticated internal gear hubs, providing the precision and reliability that the brand is known for. As a critical component in the hub assembly, this right-side lock nut plays a vital role in securing the internal mechanics, ensuring your rides are smooth, efficient, and trouble-free. By choosing an authentic Shimano part, you are investing in the original factory specifications, guaranteeing a perfect fit and restoring your hub to its optimal working condition.

Key Benefits:

* Restore Peak Performance: Replace a worn or lost lock nut to eliminate excess play in the hub assembly. This restores the crisp, smooth operation of your Nexus internal gear hub, ensuring precise shifting and efficient power transfer.
* Guaranteed Compatibility and Fit: Engineered by Shimano for Shimano, this SG-8R31 lock nut guarantees a perfect, hassle-free fit on compatible Nexus 8-speed hubs. Avoid the risks associated with generic parts and trust the component designed specifically for your system.
* Essential for Proper Maintenance: Whether you are performing a complete hub overhaul, a routine service, or simply adjusting the bearing preload, this lock nut is an indispensable part for completing the job correctly and professionally.

Main Features:

* Authentic Shimano Spare Part: Manufactured to the highest standards of quality and precision, ensuring it meets the exact tolerances required for complex internal gear hub systems.
* Integral to Bearing Adjustment: Functions as the final securing element for the hub´s bearing assembly. It locks the cone in place after adjustment, maintaining the perfect bearing preload for minimal friction and maximum stability.
* Robust Construction: Built to withstand the rotational forces and environmental exposures experienced within a bicycle hub, offering long-lasting and reliable service.

Cones and Bearing Assembly:

The SHIMANO SG-8R31 Right Lock Nut is a crucial partner to the hub´s right-side cone. The primary function of the cone is to provide the inner race for the hub´s ball bearings and to allow for the precise adjustment of bearing preload. Once the cone is threaded to the perfect position—tight enough to eliminate wobble but loose enough to allow free rotation—this lock nut is tightened against it. This action locks the cone securely in place, preventing it from vibrating loose during riding and thereby preserving the critical bearing setting. Proper installation of this lock nut is fundamental to the health and performance of the hub´s cones and bearings.

Technical Specifications:

* Product: SHIMANO SG-8R31 Right Lock Nut
* Shimano Part Number (Y-Code): Y33S98210
* Category: Spare Parts
* Subcategory: Hubs
* Primary Compatibility: Shimano Nexus 8-Speed Internal Gear Hubs . Always consult the official dealer´s manual for your specific hub model to confirm compatibility.
* Position: Right Side (Drive Side)

Additional Component Information:

Shimano.

Right Cone Shim.

W.

Seal F.

Sg-8R25.

Country Of Origin:- Jp