Bearings for Mining Trucks: Three Technologies in a Single Vehicle

Every Section of the Truck Has Its Own Set of Demands

A mining haul truck does not subject every suspension and steering point to the same type of load. For that reason, when RBC Bearings engineers spherical bearing solutions for this equipment, it does not rely on a single technology throughout the truck. Instead, it applies three different bearing technologies, each selected for the specific demands of a particular application. For Panhard rods and drag links, where the primary challenge is maintaining lubrication under repeated angular movement, RBC recommends its QuadLube technology—a lubrication groove system that delivers more lubricant directly to the bearing's load zone. In the struts and steering linkage, where components must withstand both continuous lubrication demands and severe impacts from rough terrain, QuadLube is combined with ImpactTuff, a ductile-core technology engineered to absorb shock loads without fracturing. The nose cone main body pivot also utilizes QuadLube technology. Meanwhile, the body lift cylinders, where preventing abrasive particles and contamination is the primary concern, are equipped with SpreadLock seals—a dual-lip sealing system designed to keep contaminants out while retaining lubricant inside the bearing. This application-specific approach—matching each bearing technology to the unique operating conditions of a particular location on the truck rather than using a one-size-fits-all solution—is the same engineering philosophy we apply at BIOSA when recommending bearings and sealing solutions for heavy equipment. Not every point on a machine faces the same operating challenges, and treating them as if they do often leads to premature failures and costly unplanned downtime. RBC is recognized as a market leader in the innovation and design of spherical plain bearings for the mining industry, offering replacement bearings that match original equipment specifications or upgraded versions engineered to extend component service life. In a mining operation, where haul truck availability directly affects productivity, performance, and profitability, selecting a bearing that falls short of the specific requirements of each application can result in the downtime of an entire mining operation.