Mining equipment operates under extreme loads, and the pin and bush bores at its pivot points wear over time. Common signs that equipment needs line boring include ovalised or elongated bores, loose or sloppy linkages, accelerated pin and bush wear, uneven wear patterns, and bores that no longer meet specification.
When these symptoms appear, leaving the bore unrepaired risks accelerated wear of mating components and potentially serious structural damage. Line boring restores the bore to specification, often on site, returning the component to service without the cost and delay of full replacement.
NLC Engineering carries out mobile line boring across Western Australia with 6 mobile units, prioritising on-site repair to minimise dismantling, transport and downtime. If you suspect worn bores on your equipment, an assessment can determine whether line boring is the right solution.

