Lagging is generally used on drive pulleys which are usually located on the dirty side on the belt. It is used to increase the co-efficient of friction on the belt to the pulley. Four kinds of lagging are rubber, vulcanized, bolted, and ceramic.

We provide rubber lagging which is applied to pulley shells in order to improve the friction between the pulley and the belt. Conveyor drive pulleys are often supplied with diamond grooved lagging.

‘Diamond grooved lagging’ refers to the pattern in the lagging and this pattern, like with vehicle tyres, and enhances the grip or friction even if the belt surface is dirty.

A number of variations to diamond-grooved lagging are available including for example, chevron-lagging. ‘Plain’ lagging can also be applied to pulley shells as indicated adjacent.

The application procedure is much the same as with diamond grooved lagging however, the pattern is absent.
Plain lagging is applied to pulleys which are not drive pulleys for example tail pulleys, take-up pulleys, etc. but which require good traction between belt and pulley for improved belt tracking capability.

This is especially the case where the belt surface is expected to be dirty or wet, which reduces friction and can result in less ‘control’ over the belt’s behaviour.

Rubber lagging is a relatively ‘soft’ liner (usually approximately 40 to 60 shores) which is resilient to wear but at the same time offers good traction. As such rubber lagging does not damage the belt however its operational life is limited and pulleys must be re-lagged on a routine maintenance program.

Rubber lagging material is manufactured in standard widths in either ‘plain’ or ‘diamond grooved’ pattern and is vulcanized to the pulley shell to prevent the lagging from peeling off of the shell.