Your evaluation of brush performance is based how effectively the brush meets the standards you set…for your application…in your process conditions…and within your budget.
That’s why it’s so important to gather information about your situation and needs before suggesting a brush solution. It’s also important to understand that you can change the combination of features to address the various considerations (brush cost, brush performance, brush conditions, etc.). We want to help you prioritize those issues to ensure the brush you select provides the best performance for the best value. A brief look at some common brush problems helps illustrate the value of this approach.
Brush “Chatter” or Vibration
Brush chatter occurs when a brush vibrates, or jumps up and down on the surface rather than maintain a smooth, consistent down pressure. The result is an oscillating pattern across the brushed surface.
With greater downward pressure, the brush may mar the material surface; as the brush lifts up, it may not provide adequate cleaning pressure. In addition, as the vibration becomes more serious, it can damage other parts of the equipment (e.g., excessive wear causes bearings to wear out more quickly). Brush chatter is often caused by a brush that is not in balance. To help avoid this, United Rotary Bush offers a rigorous pre-balance test of your brush shaft and precision dynamic balancing of the finished brush roll. Brush chatter can also be caused by worn bearings or other equipment problems.
Brush Streaks and Surface Marking
There are a number of reasons why a brush will leave streaks or other marks on the brushed surface. For example, the brush may not be operating at the optimal speed or downward pressure for your particular application or in your specific sweeping conditions. There may be issues with your brush design operating. You may need to use a more or less agressive filament. Or perhaps increase the brush density. At United Rotary Brush, you can work with professional brush consultants who offer an in-depth knowledge of brush materials as well as years of experience addressing brush performance issues across a range of applications.
“Shedding” or loss of filament is the most common type of brush failure. Not only does this diminish brush performance and life, it may create process down time and increase costs. Filament breakage may occur if the filament material is not optimal for the application conditions. The type, diameter or trim length of the filament may need to be adjusted. Excess heat will accelerate brush failure. Proper cooling is required to maintian optimal perfect life. The type of construction of your brush may be another issue, depending on your current brush settings or speed as well as process conditions (wet/dry; hot/cold; etc.). With a custom engineered brush, you can select the best core or channel components, choose the optimal filament material, and pick the construction that provides your best level of protection against brush failure.