For five years, Metso Outotec has been serving Borborema quarry with the highest-quality rubber lining. The Metso rubber lining was installed five years ago on two trucks in its fleet and those same linings are still in use. According to a specialist at Borborema, the linings should last for an additional two years, which means the Metso rubber lining is at least four times more durable than the traditional steel linings.
Premature wear of the truck's components when lined with steel
Located 400 kilometers from the state capital of São Paulo, the quarry produces approximately 70 thousand tons of aggregates per month, with the average production varying depending on market demand. The site’s haul trucks have a capacity of 16 m3 and are filled by a 36-ton excavator equipped with a 2.1 m3 bucket.
During the daily operations, drivers don't have to worry about damaging the box and the truck because the Metso rubber lining helps absorb the repeated impact and stress of unloading the heavy abrasive material.
Oswaldo Nogueira Sigolo Filho, Manager of the Borborema quarry, sums up his thoughts on the Metso rubber lining:
“Without the Metso rubber lining, typically the body is first filled with thinner material to form a protective layer for the dump body. Then the truck is loaded with gross rock material. The Metso rubber lining absorbs impact and prevents premature wear of the truck’s components, such as the leaf springs,” he notes.
Sigolo Filho is responsible for monitoring the performance of the equipment and maintaining the centralized data for the entire fleet. According to him, the trucks lined with Metso rubber lining are the smallest trucks in the fleet that are operating in combination with the 36-ton excavators. This makes the shock absorption an essential factor in terms of the work and safety during the loading process.