WHEELS Mfg Sleeve for BB Bearing Extractor Cup

This sleeve acts as a receiver cup for sealed bearing extraction. It provides a stable, precise surface to support the bearing housing while you press it out, preventing damage to the surrounding frame or component.

This sleeve is designed with a 39mm inner diameter and a 52mm outer diameter. You should measure the outer diameter of your bearing or the housing you are servicing to ensure it matches these dimensions before purchasing.

No, this is a standalone adapter sleeve. It features a 0.5-inch through-hole, which allows it to slide onto most standard threaded rod press handles you likely already own.

It is designed to be compatible with standard sealed bearing extraction systems that utilize a threaded rod. As long as your extractor rod fits the 0.5-inch through-hole and the sleeve diameter matches your bearing size, it should integrate seamlessly.

Aluminum is used to provide a balance of durability and surface protection. It is strong enough to handle the pressure of bearing extraction while being softer than the steel or carbon fiber of your bike frame, which helps prevent accidental marring or scratching during the process.