Vesconite used on a peripheral grinder

A South Africa mining company using peripheral grinders to sharpen steel bits on rock drills contacted us for a replacement solution to high-wear bronze bushings on its grinding machines. This application receives no lubrication and operates under a great deal of dirt and grit, which accelerated wear rates on the bronze bushings. Vesconite bushing were machined and fitted to this application, and have performed superbly for the past two years.

Vesconite bushings on a vertical borer stabiliser rod

A earth-boring company was looking for a durable material to create stabilisers for its borer machines. The machine bores between levels in mines and is capable of boring chutes up to 120m. The drill steel is subject to high levels of grit and rock. The Vesconite stabilisers help align the drill steel, thereby avoiding whip in the drill. Despite the dirty conditions, the new stabilisers required no lubrication between recommended overhaul schedules, and general maintenance and downtime were substantially reduced.

Vesconite used on flask door opening mechanism

Flask doors are opening mechanisms allowing ore to pass through and into a skip situated below. Knuckle pin bushes, used on the door’s opening mechanism, are traditionally made from bronze. In this particular instance, the original bushes were subject to heavy wear and eventual seizure due to dirt and lack of lubrication – accessing these bushes is difficult. Vesconite bushes were retrofitted to the mechanism. External lubrication was no longer required and Vesconite’s remarkable ability to function well in dirt and grit meant that maintenance and replacement schedules were greatly reduced.

Vesconite used as oscillating bearing on filter rakearm

South Africa – A mining company sought a harder-wearing alternative to white metal liners on filter rakearms. These rakearms are used to stir the gold bearing solution at the bottom of the filter and as such are subjected to harsh and dirty conditions. The Vesconite bushings were machined and fitted, with excellent results. Unlike the original white metal bushings, the Vesconite replacements are easy to remove and refit, and offer both far longer life and considerable cost savings.

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