Estimating bearing life is crucial for determining the suitability of the selected bearing alloy for a specific application.

It’s important to note that these calculations are based on laboratory test results that simulate the conditions the bearing will face. However, certain factors, such as the presence of abrasive particles, cannot be fully replicated in a lab setting. Therefore, lifetime warranties are not provided unless explicitly stated in writing after receiving written confirmation of all application data.

Type of Load

Self-lubricating bronze solid lubricant bearings perform optimally under steady, unidirectional loads, which help reduce fatigue stress and effectively increase load capacity. This allows for the use of smaller bearings and/or extended bearing life. Bearing performance under dynamic loads, which decrease load capacity, also depends on the material’s fatigue resistance.

Shaft and Bearing Motion

Self-lubricating bronze solid lubricant bearings perform excellent when stationary against a rotating or oscillating mating surface. In this setup, the arc of contact increases as wear progresses, reducing contact pressure and extending bearing life. Conversely, if the mating material is stationary, the arc of contact decreases with wear, increasing contact pressure and shortening bearing life.

Chemical Products and Corrosion

Self-lubricating bronze solid lubricant bearings can offer guidance regarding the chemical compatibility of the bearings. Whenever possible, it is recommended that chemical resistance be confirmed through testing. Corrosion resistance largely depends on the lubricant, bearing, and mating surface materials. Graphite-based plugs should not be used when electrolytic corrosion occurs, such as in high-humidity atmospheres or submerged equipment. In such cases, PTFE-based plugs are recommended.