woman holding a book
Pulley puller is a term used to describe a category of tools used to install or remove various mechanical pulleys and similar pressed or pressed mechanical parts. While most commonly associated with the removal and installation of automotive pulleys, bearings and gears, pulley puller tools are used in a variety of industrial and consumer applications. Extractors are typically designed to grab and hold round parts that would otherwise have no clear gripping or leverage points. Differing in size, construction and operation, most pulley pullers rely on carefully applied stabilized back pressure to prevent damage to components or surrounding machinery during removal or installation of pulleys, bearings, sprockets or gears.
The need for a pulley puller is often dictated by the lack of strength required to remove or install a part. Many original equipment pulleys, gears, sprockets, and bearings are pressed into place at the factory when a particular machine or machine component is manufactured. Removing these parts by hand is often impossible. As such, a pulley puller makes up for the difference between the strength of hydraulic manufacturing equipment and the strength of a human repair professional. Extractors allow repair personnel to remove or install a spare part previously assembled by powerful equipment, without the need to have additional heavy fabrication equipment available.
Types of pulley pullers include manual jaw pullers, harmonic pullers, hydraulic pullers, pneumatic pullers and various other pulley puller designs for specific machines and other applications. For automotive applications, pullers are often designed to remove or install just a specific part, such as power steering pumps, wheel bearings, or harmonic balancers. In these cases, removing or installing a specific part requires a custom tool to fit in a confined space with limited leverage points.
Universal pulley puller tools are available, but the universal designation primarily refers to multiple automotive manufacturers or machine builders, rather than the ability to use the tool on a variety of pulleys, bearings, or other parts. Alternatively, a Jaw Pulley Puller Set is the most universally adaptable hand pulling tool, offering graduated sizes to accommodate a variety of possible uses. These generic pulley puller tools allow repair professionals to have more universally applicable tools for use in a variety of environments, on a variety of industrial machinery or automotive components.
While the automotive repair industry may be the most common user of pulley puller tools, other industries require similar tools for the maintenance and repair of heavy equipment. To illustrate the wide and varied use of such tools, shipyards use hydraulic pulley puller tools to maintain and repair gears, bearings and pulleys used on commercial ships. Manufacturing facilities such as steel and paper mills use pulley pulleys to maintain and repair assembly and process equipment.