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 divides into “Working Width” and “Clamping Width”.
Working Width (also called the Brush Face) refers to the contact surface of the brush on the work piece. The 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.
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.