Internal Extractors

About

A Kukko Internal Extractor is a specialist tool designed for one job: removing internal-fitted components cleanly, safely, and with minimal risk of damage. Within Bearing King’s product collections, internal extraction tools like Kukko are trusted by maintenance engineers, fitters, and workshop teams who regularly deal with bearings and bushes seated inside housings. When parts are tight, recessed, or fitted close to a shoulder at the back of a bore, an internal extractor becomes the difference between a controlled removal and a time-consuming battle with improvised methods. What is a Kukko Internal Extractor used for? A Kukko Internal Extractor is built for extracting components that are pressed into a housing or bore and cannot be gripped from the outside. Typical parts include: Ball bearings Ball bearing outer races Bearing cups and sleeves Bushes and plain bearings Bearing rings and liners Seized or closely fitted components set deep in a housing The key advantage is reach and grip. Even when a bearing sits “closely up to the back of the housing”, an internal extractor can expand behind the component, lock into place, and pull it out in a controlled way. This is especially useful on gearboxes, motors, pumps, fan housings, and industrial drive systems where the bearing is recessed and access is limited. Why internal extraction matters Removing a bearing or race from a housing is often where damage happens. If you try to drift it out with a punch, you risk marking the bore, ovalising the housing, or cracking the seat—especially on softer materials like aluminium. If you apply uneven force, components can jam or cock sideways, making extraction harder and potentially ruining parts that were otherwise serviceable. Using a Kukko Internal Extractor helps avoid these problems by providing: Secure internal grip behind the component Even pulling force to reduce binding and distortion Cleaner removal with less risk of scoring the housing Faster dismantling compared to mak