How Often Should Rotary Drums Be Trained? After that, drums require routine training as they experience normal wear and tear, which causes the drum to fall out of proper float over time. When to Conduct Drum Trainingĭrums are trained after initial installation of the unit as part of the start-up process. In addition to damaging the tire and thrust roller, improper float also impacts the mechanical stability of the unit, which is critical to the overall longevity of the drum and its many components problems that start in the base have a compounding effect on all components, escalating over time as the drum becomes more and more out of balance, putting undue strain on all components. And while very slight thrust roller contact is permissible, anything more has the potential to cause significant wear on both the tire and the thrust roller, as it puts the tire in high-pressure contact with the thrust roller. If a drum is not properly floating between thrust rollers, it is subsequently pushing too hard uphill or downhill. Thrust rollers are positioned on both sides of the tire at each pier, ensuring that the drum cannot drift longitudinally in either direction.Ī drum riding too hard against any thrust roller is not only a sign that the drum is not floating properly, but may also indicate that the drum has fallen out of alignment and may require drum realignment by a professional.ģD Rendering showing how thrust rollers rest on both sides of the tire to prevent the drum from drifting longitudinally Why Drum Training is ImportantĪlong with alignment, achieving the proper drum float is a key aspect of the drum’s mechanical stability. This aspect of positioning is known as drum float, as the goal is to get the drum to “float” properly between thrust rollers without riding too hard on the uphill or downhill thrust roller. ![]() Training is closely related to rotary drum alignment, but instead of focusing on trunnion wheel positioning and alignment, centers around achieving the proper positioning of the drum between thrust rollers. One essential tool in any rotary drum maintenance program is maintaining proper drum float through a practice known as drum training training the drum after installation and routinely throughout the equipment’s life will minimize wear on load-bearing components and help prevent unnecessary damage to the unit. An adequate preventative maintenance plan is a major contributing factor to maximizing the service life of a rotary drum, be it a dryer, cooler, kiln, or granulator.ĭespite being a rugged piece of equipment, rotary drums require a careful balance of load on mechanical components in order to maintain mechanical stability and minimize wear.
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