In addition to sprockets in clamping bush design and sprockets featuring a bore hole, key way and threaded hole, sprockets for roller chains are also available in a standard pre-drilled design. These are also known as disc wheels and are generally available in simplex, duplex and triplex versions, with any inside dimension and in accordance with the BS and ANSI and ASA standards.
A pre-drilled sprocket needs to be machined before it can be used in a drive. In most cases, these sprockets feature a bore hole, including key way and threaded hole, or a bore for a cylindrical clamping bush or coupling.
Sprocket and sprocket assemblies come in both standard and customised versions.
Choosing a specific design or quality largely depends on the application and the environmental conditions. If the drive needs to fulfil conveying purposes, the type and weight of the product being conveyed are also a key factor. For environments in which the drive is exposed to moisture, sprockets can have a special surface treatment and can be supplied in stainless steel or plastic.
Chain drives are primarily used in the foodstuffs and drug industries, in the agricultural and forestry sector, in the fishing industry, in mechanical engineering and in naval applications.
Important standards for chain drives: ISO 1977, ISO 606, ISO 1275, DIN 8167, DIN 8181, DIN 8188, DIN 8187 and BS 228.
