Self-lubricating bearings touch nearly every piece of equipment in the lumber industry; from the track road arms of timber harvesters (download PDF), to the kilns used to dry-finish boards used in housing construction and other applications. Composite bearings offer durability and reliability, but more importantly for an industry dependent on fragile ecosystems, they protect the environment from the oil spillover that seeps into the ground when metal bearings are greased in the field.