Hinges are simple mechanical devices that are used to join two things together while simultaneously allowing them to move independently of each other. The most common example of a hinge is a door hinge.
Hinges come in a variety of designs, sizes, and build materials. They are most commonly made of a metal or alloy, though the size and design of the hinge depend on the weight and size of the door in question. Hinges are fixed to objects using screws or a strong adhesive.
RS Components stocks hinges of all styles, including butt hinges, adjustable door hinges, and piano hinges. We carry small plastic hinges for light cabinets all the way up to heavy-duty hinges for industrial purposes.
Door hinges typically consist of two plates, also called leaves, that are joined together by interlocking knuckles and a pin to keep them in place. Leaves are mounted on the door and the frame or jamb, then lined up so that the knuckles interlock with each other. Finally, to unite the two leaves together, slide a pin down through the knuckles and lock them into place.
The size and weight of the door dictate how many door hinges are needed and what size they need to be. Lightweight doors on cabinets may only need one central hinge to facilitate opening and closing, whereas heavier doors might require multiple hinges to support the door's weight. Many prefer to use adjustable door hinges because, over time, some frames or doors may warp or change shape due to their environment.
Some door hinges also serve secondary purposes, such as locking an open door into place or forcing it closed automatically. Locking hinges help doors remain open and prevent them from closing, which is helpful when transporting items through the door.
Heavy, metal doors require a heavy-duty hinge that can support the weight of the door. Stainless steel hinges are a popular type of heavy-duty hinge because they are both durable and anti-corrosive. Facilities that work with extreme temperatures may find that stainless steel hinges are necessary for all doors.