Free Spiral Brushes | Spiral Strip

The spiral brush consists of a Spiral Strip with a defined inner diameter, which can be supplied and assembled on a body properly fixed, or as spare part to be assembled by the customer. The coils of the spiral brush may be wound up closed to or distanced., The fill density of the brushing surface or thickness may be compared to the winding pitch or to the number of coils wound onto a body.

Maximum and Minimum sizes achievable

Technical drawing and sizes of free spiral technical brush

Minimum and Maximum Size
	Min. [mm]	Max [mm]
External Diameter [A]	40	800
Internal Diameter [D]	12	500
Length [L]	5	4800
Pitch (density) [P]	5	70

Density, Juxtaposition and Orientation of the Coils of Filament

Coils have a density that can be High, Medium, Low. The value of Pitch "P" can vary

Diagram of Free spiral at maximum density (closed coils)

Maximum Density (close coils)

Medium Density

Low Density

Left Handed Winding

Right Handed Winding

Winding Converging or Diverging to the Center

Electric-welded spiral brush by SIT Tecnospazzole manufacturer of industrial brushes

Electric-welded Spirals

Electric-welded Spirals are spiral brushes wound up closed, welded at their inside in order to realize a single cylindrical module. Thus it is possible to assembly more modules in order to obtain the length requested; moreover modules become easily interchangeable. Available with different diameters, filaments and trim length.

Static and Dynamic Balancing of the Spiral Brushes

The Dynamic balancing of the brushes it is indispensable to improve the performance the surfacesal treatment and to avoid stress to the brushing machine.
it is recommended to perform dynamic balancing for all brushes mounted onto an arbor and get exploited at high rotating speed. SIT can realize the dynamic balancing and issue the relative certificate

User preparing a roller brush for the phase of Balancing

Cylindrical brush in abrasive nylon during the dynamic balancing

Computer showing the values of Balancing of a brush SIT Tecnospazzole

Contact or Request For Quote

Free Spiral Brushes custom made for the customer by SIT Tecnospazzole

For every doubt our Technical Office is available to help you select the ideal brush (Pitch, Density, Length and Material) for your application...

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