Chain, group of links, usually of metal, joined together to create a flexible connector 
for various purposes, such as holding, pulling, hoisting, hauling, conveying, and transmitting power.
The easiest and oldest kind of chain is the coil chain, which is made from straight metal bars that are bent to an oval shape, looped together, and welded shut. These bars were traditionally manufactured from wrought iron, but chains made of metal have gained favour in recent years. This type of chain was traditionally used in slings, cranes, and power shovels, but it has partly been changed by cable or wire rope. On some hoists, coil chains run on unique pulleys with recesses in which the chain suits. A variant of the coil chain may be the stud-hyperlink chain, each of whose links has a bar or stud across its inside width. These studs add weight, keep carefully the chain from fouling or kinking, and assist in preventing deformation; stud-hyperlink chains are preferred for use as anchor and cable chains on ships.
A silent chain is essentially an assemblage of equipment racks, each with two the teeth, pivotally connected to form a closed chain. The links are pin-connected, flat steel plates with straight the teeth. Silent chains are quieter than roller chains, can operate at higher speeds, and can transmit more load for the same width.
Silent chain is composed of stacked rows of toned, tooth shaped driving links that mesh with sprockets having compatible tooth spaces. Silent chains contain instruction links to maintain appropriate monitoring on sprockets. Spacers and washers could also within some silent chain constructions. The silent chain can be held with each other by riveted pins located in each chain joint. All silent chains have these basic features but there are many different styles, designs, and configurations.
Silent chain is utilized in both power transmission and conveying applications. It is important to identify the application when contemplating purchasing silent chain. Silent chain is available center guided, part guided or with two middle guides. It is available with single pin or two pin joints. It is necessary to note the pitch and width when determining silent chain, and also the build type. Silent chains are found in a variety of demanding industrial and automotive applications, particularly those industries requiring high speeds and quiet operation.
Silent chain, or inverted-tooth chain, is usually a type of chain with teeth shaped upon its links to activate with one’s teeth in the sprockets. Silent chains drives are not truly silent. The links in a silent chain drive, however, engage with the sprocket the teeth with little effect or sliding, and consequently a silent chain creates less vibrations and sound than additional chains. The quantity of noise generated by a silent chain drive depends of many elements including sprocket size, rate, lubrication, load, and drive support. A link belt silent chain contains removable links joined by rivets or interlocking tabs. These chains offer the advantage of set up without dismantling drive components, reducing inventory, and raising temperature ranges.
Pitch
A silent chain’s pitch is generally expressed in ins; the most typical are .375 in, .500 in, .750 in, 1.000 in, 1.500 in, and 2.000 in. Chain pitch can be dependant on measuring distance over the consecutive pin heads and dividing by three. Width can be used to express how big is a silent chain including: width over heads (the utmost chain width, measured across the ‘headed’ pins), width over links (the measurement across link plates, excluding pin heads or washers), width between manuals (measured between guide plates; used just with side instruction silent chains), and nominal width (not a measurement, but an approximation of chain sized for catalogs).
Applications
Silent chain can be utilized in a variety of power transmission and conveying applications. When found in power tranny applications, silent chains are able to transmit loads at speeds in excess of other styles of chains and belts. In addition, silent chain drives transmit power more efficiently and with less noise and vibration. Silent chains are also used in conveying applications because their conveying surface area is long lasting, resistant to high temperature, is flat, and nonslip. Silent chains from different manufactures are different in design; parts should not be used interchangeably.