Used in a diverse range of environments from workbenches in garages to landing gear
on aircraft, caster wheels are versatile rolling devices that may be used to effectively support a load. Typically, casters contain a single wheel that is housed within a frame and are often used on the bottom of furniture and heavy machinery to allow them to roll smoothly across the floor. This allows for heavier objects to be moved with ease when they are too heavy to lift, or could otherwise cause undue strain on the person carrying them. They may be made of metal, plastic, wood, or other materials for varying capability and resistance to environmental factors. With an array of uses, there are many different types of caster wheels available, the most common of which are described below.
Plate Casters: As the most common type, plate casters are characterized by their flat, square-shaped mounting surface. Often, they will have four holes, one on each corner of the mounting device, that are used to secure the plate caster to an object. To install, bolts or screws can be used for a permanent hold. Aside from providing easy installation, the square shape of these casters has excellent weight distribution so they are often preferred for larger loads.