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Brush Operating Pressures

Employ light working pressure. The “tips” of the wire or filament do the work. Every attempt should be made to avoid a wiping action, for example, working on the sides of the wire or filament.

The wiping action creates additional heat and wire fatigue, thus reducing brush life, with little increase in cleaning or deburring action.

Whenever possible the full face of the brush should contact the work piece. Applying work to the edge or side of the brush will develop a wiping action, thus shortening brush life.

Correct Pressure
Too Much Pressure

Trim Length

Trim length refers to the length of the fill material that extends beyond the brush back/face plates. While a short trim means a stiff, fast-cutting brush, a long trim gives a brush added flexibility that enables it to make better contact with irregular surfaces.

Face Width

Face width divides into “working width” and  “clamping width”. Working width refers to the contact surface of the brush on the work piece. Maximum working width is influenced by the rotational speed of the brush during operation. Working width is measured by pressing the fill material slightly together. 

Clamping width of the brush measures the distance between the clamping adapters and normally differs from the working width.

Fill Density

The fill material density is determined by the number of wire tips per surface unit. High fill material density is the basis for optimal performance and life expectancy of brushes. 

Brushes with low fill material density have a greater flexibility and are ideal for the treatment of strongly profiled surfaces. If the brush diameter stays the same, the fill material density can be influenced by the measure of the brush body.