Separators

About

A Kukko Separator for Pulling is one of the most reliable tools you can use when you need to remove tight-fitting components from a shaft without damaging the part, the shaft, or the surrounding assembly. Within Bearing King’s product collections, Kukko separators are a go-to solution for engineers, mechanics, and maintenance teams who regularly deal with stubborn bearings, inner races, sleeves, and similar parts that offer very little space to grip. When a bearing or race is fitted tightly and sits flush against a shoulder, standard puller arms can struggle to find a safe purchase behind it. That’s where a separator (also known as a bearing splitter) becomes essential. The separator jaws slide into place behind the component and create a secure “ledge” for pulling. This makes extraction far more controlled, especially in workshop and industrial environments where precision matters. What is a Kukko separator used for? A Kukko Separator for Pulling is designed to engage behind components that are press-fitted or seized onto shafts. Typical applications include: Ball bearings and roller bearings Inner races (especially those left behind after bearing failure) Sleeves, collars, and spacers Pulleys and sprockets (where suitable access exists) Tight-fitting parts that sit close to the housing or shaft shoulder In short: if it’s stuck on a shaft and you can’t get conventional puller claws behind it, a separator is often the safest next step. How it works: wedge-shaped jaws for secure grip Kukko separators are known for their precise engineering, and the key feature is the sharp, wedge-shaped edges of the separator jaws. These edges are designed to slip behind the part to be removed and gradually “bite” into position as the separator is tightened. As the jaws close evenly, they form a secure grip behind the component, allowing you to pull it off its seat without levering or hammering. This wedge action is particularly helpful for: Non-destructive bearing removal , where yo