About Chain,flexible series of connected links used in various ways, especially for the transmission of motive power, for hoisting (see pulley), and for securing or fastening. Commonly, mechanical energy from a motor or other source applied to a sprocket wheel is conveyed by means of an endless chain to another sprocket wheel for driving a mechanism. Examples of such an arrangement are found in bicycles, motorcycles, and conveyor belts. The chain in this application is so designed that each consecutive link fits over a sprocket, the distance between links being called the pitch. The relative speed of the wheels varies according to their relative circumferences and, thus, the number of sprockets on each. There are several types of chain for the transmission of power. A detachable-link chain has links that are simple rectangles, each with a connecting hook at one end by which it is attached to the next link. A pintle chain has links that are approximately U-shaped. The closed end of each link fits into the open end of the next one; a pin holds the two links together. A block chain consists of metal blocks that are joined together by side plates and pins to form links. A roller chain has links consisting of side plates with hollow cylindrical rollers between them. Pins pass through the rollers and side plates to hold the links together. A silent, or inverted-tooth, chain has links made of toothed metal plates. A number of these links are placed side by side to form a group. Each group is joined to another one by meshing the ends of the links of both groups and inserting a pin there. By repeating the process a chain can be formed. Its width can be varied by varying the number of links in a group. Although not completely silent, this type of chain is quieter than other power transmission chains. The coil chains used in hoists and for locking or fastening purposes are of the open-link type, comprising solid interlocked rings, or of the stud-link type, in which a stud, or bar, across the link keeps the chain from kinking.About Chain, RollerA roller chain is used in power transmission design of all kinds and in many specialized industries. Roller chain configurations include standard, heavy duty, double pitch for light loads, attachment options and many application-specific geometries. There are many styles of chain; those covered in this search form is characterized by ANSI and BS/DIN standard sizes. Mechanical components covers a wide range of items and devices designed to handle, induce, or drive mechanical systems. In almost all cases, these components were manufactured to be part of a greater system, and do not have the ability to function on their own. The mechanical components family includes the following products: bearings and bushings, belts and pulleys, chains and sprockets, clutches and brakes, couplings, collars and universal joints, enclosures, fans and electronic cooling, gears, industrial heaters and heating elements, industrial tools, limit switches, mechanical fasteners, power transmission (mechanical), process equipment, pulleys and belts, seals, solenoids, springs, and switches. Power transmission areas cover the wide spectrum of gears, locknuts, and other couplings that are used to secure shafts or transmit power throughout drive systems. The gears included in this family are bevel, herringbone, worm, helical, hypoid, miter, and spur and strait tooth, as well as the associated gear stocks and blanks. All of these gears are available in both English and metric configurations. Additional members of this family include roller chains, belts and belt pulleys, shaft collars, ratchets and pawls, sprockets, and universal joints. |