(317) 638-6431 Arthur C. Newby, Edward C. Fletcher and Glenn Howe, with a $5,000 investment, startedwhat was to become the Diamond > Chain Company by forming The Indianapolis Chain &Stamping Company on December 24, 1890. They took the diamond as theirtrademark because it symbolized perfection and acted as a constantreminder of their endeavor.In its humble beginnings, The Indianapolis Chain &Stamping Company (IC&SC) specialized in bicycle chain. Asone of the first companies in the United States to producebicycle chain, IC&SC prospered, outgrowing its original quar-ters and moving to larger facilities...

inventive, grassroots philosophy it was founded on providing its customerscustomers with a high-quality product possessing the best balancewith high-quality product processing the best of performance, reliabilityprice and delivery that meet or exceed their requirements. If you֒re looking for the best rollerchain for the job, itll pay to take a closerlook at Diamond roller chain. Diamond roller chain may looklike your everyday chain, but upon closer inspection the unique differences that make Diamond chain better become evident. From the strict attention to detail we devote to every chain design,...

Each component of a Diamond chain is engineered and produced with optimum perfor-mance in mind. Exacting specifications cover critical properties of all component parts and assemblies. Diamonds ISO 9001 certification is proof of the fact that ғwe say what we do and do what we say. > (317) 638-6431 Pin > Bushing Roller Link PlateRollerPin Link Plate We produce our Oil Field chains with the same attention to detail that goes into all our products.but additionally these models are subjected to performance testing in accordance with API(American Petroleum Institute) Specification 7F. Only those companies...

bushings and rollers are produced using this method. This isbecause in these sizes horsepower is most often transmitted at higher speeds with relatively low loads. Beginning with 38.10mm pitch, Diamond providessolid rollers because in the majority of applications horsepower is transmitted using higher loads and lower speeds. Under these conditions the integrity of a solid roller is beneficial and therefore, it is provided. There are, of course, exceptions to these standards and depending upon the specific conditions, solid rollers are available either by design or customer request.To most users,...

Extra link plate capacity of Diamond chain is a result of detail to pitch hole preparation and of shot peening external surfaces. > Extra roller/bushing capacity of Diamondchain is a result of formed bushings and rollers which have more perfect roundnessand grain structure orientation. Roller Chain Horsepower Ratings Per ANSI Standards B29.1. > HORSEPOWER If your application is one which exceeds the ANSI Horsepower ratings, please contact Diamond for suggestions or recommendations. >

The two pins and one link plate are furnished assembled. Thestandard coverplate is designed for a slip-fit on the pins. It is held in place by a flat spring-steel lock, split at one end topermit installation in grooves at the end of each pin. Press-fitcoverplates are also available and are recommended for heavy duty applications. > The two pins and one link plate are furnished assembled. The coverplate may be either press-fit or slip-fit on the pins. Press-fit connecting links are recom-mended for heavy duty applications. Press-fit coverplates are standard on multiple strand oil field chains....

O-rings keep lubrication in and contaminants out. Special bushings, having very uniform wall thickness, are precisely heat-treated to obtain an optimum balance of strength, wear resistance and toughness. The bushings are extended beyond the roller link plates. This feature helps theO-ring stay in position and provides maximum pin support, resulting in greater bearing area for the pin. Pins are made from a special alloy steel and are hardened and centerless ground. Rigid quality standards ensure precise hardness control for high wear resistance and toughness. > 14 size="-1">

Assembly:While it is possible to purchase base chain or attachment components and construct an attachment chain, it isstrongly recommended that chains be ordered and assembled at the factory to ensure the proper fit and alignment of all parts along with any length or matching requirements.Manufacturing Length Tolerance:ANSI defines the permissible length of an assembled section of roller chain. The allowable length tolerances vary from model to model and are also affected by the chains construction, i.e., with or without attachments.As an example, the assembled length tolerance for an ANSI one...