Often used for applications that desire the hinge to be hidden, piano hinges are never fully hidden; as a result, the effect of a truly hidden door cannot be actualized with this type of hinge. Read More…
Marlboro Manufacturing, Inc.Alliance, OH | 330-935-2445
We take our customer evaluations as our only measure of success. If our customers are not happy, we are not happy! We will work with you until we find the right hinges solution for you.$$$
S & D Products, Inc.Bartlett, IL | 800-989-6365
We are here to provide you with any hinge you could ever possibly need! We are the hinge specialists committed to bringing you a level of customer service that is unmatched by the competition.$$$
Hardware Mfg.St. Louis, MO | 314-436-0432
Hardware Mfg. supplies stock inventory parts in addition to creating custom components for OEM and resellers. We work with a number of different industries such as agriculture, drug tablet, livestock, truck equipment, conveyors, and more.$$$
Jefco ManufacturingFort Lauderdale, FL | 800-684-4643
Jefco Mfg. has been a leader in the industry for over 40 years. With our experienced engineering and production team coupled with cutting edge technology, Jefco produces quality products for the Industrial, Marine, Aerospace, Defense, and Medical industries. We work closely with customers to meet/exceed their needs and design specs. Jefco has the ability to produce practically any design in any Mat. gauge, pin size, width, or length, in a variety of materials including Carbon fiber and Titanium.$$$
S & S Hinge CompanyBloomingdale, IL | 800-332-1227
Since 1932, the S & S Hinge Company has been providing customers with the best-quality continuous hinges possible. We have accomplished this by implementing a Lean manufacturing strategy that allows our company to do more with less.$$$
Sierra Pacific Engineering & Products (SPEP)Long Beach, CA | 800-433-5554
Our company is the true hinges expert. We own over 50 patents for fasteners and we are completely ISO 9000 certified. Our products are made with the customer in mind, and we take your requests as requirements for service.$$$
If the hinge is intended to be seen, such as on a piano, a brass piano hinge or stainless steel piano hinge is used; they are also used for many other aesthetic applications. The common piano hinge is made with aluminum; however, for heavy duty piano hinge applications such as tool boxes, electronic enclosures, barn doors, fire truck compartments, storm doors and ATM machines, materials such as brass, galvanized steel and stainless steel are often used. Most commonly used in structural applications, continuous piano hinges serve wide-ranging industries such as furniture, construction, marine, automotive, appliance and electronics.
A piano hinge is one of the two most common types of recessed hinge; recessed hinges require the wood, or other materials, to be removed to allow the hinge to be mortised, or bored, into the material. A piano hinge consists of two flat independent leaves; the interior of the leaves are curled into alternating "knuckles" that fit into one another and are secured by a pin that runs the entire length of the joint.
Knuckles in the two leaves are fabricated so that there is a gap, or "end play," between each knuckle and between knuckles and leaves. This allows the hinge to swing freely without rubbing against itself and causing friction. Most piano hinge manufacturers provide piano hinges without holes; however slotted piano hinges are also available.
Piano hinges without holes allow for custom hole drilling for its specific application or spot welding, which is the process of creating an overlapping joint by welding at small points. Slotted piano hinges have their benefits as well, as they allow for precision alignments. Once the slots, or holes, have been determined, close-spaced fasteners are used to connect both leaves of the hinge to the objects that they are trying to connect.
Piano hinges are most commonly made through the extrusion process; although roll forming and stamping are also possible. However, since piano hinges are longer than other hinges, the extrusion process works best because extrusion increases the tensile strength of the piano hinge, or object being extruded.