Cylindrical Brushes, Roller Brushes, Shaped Brushes | Spiral on Core and on Tube

The Spiral Brushes can be coiled and properly fixed at the core that can be consisting of a shaft or a tube, the choice between the two systems is made based on the application and the size of the brush.

Rotation speed, type of strip and sizes

also the type of Strip, constituting the spiral, can be Normal (N) or Stapled (G) based on requirements of density or of rotation speed of the brush. La spiral brush with the normal strip is indicated for peripheral speed not higher than 15 m/sec, while the stapled one can bear speed up to 20 m/sec.
The type of strip and the type of fastening will be appropriately designed by our Technical Office based on the specs of the application.

Bases Used and minimum winding diameter
Base	Type of Strip	Ø Min. Iron	Ø Min. Stainless Steel
5	N = Normal	12	30
10	N = Normal	25	40
6	G = Stapled	28	40
8	G = Stapled	50	60

Building techniques of the cylindrical brushes

Mounting on Core

Technical drawing of cylindrical brush mounted on Core

La brush is mounted directly onto the rotating shaft, the spiral close or distanced, is welded on both ends. The shaft is re-usable and the brush, once worn out, can be re-filled at our factory.

Mounting on a Tube

Technical drawing of cylindrical brush mounted on Tube

The tube can be supplied along with both adapters for shaft-connection and hubs for dragging or bearing.

Mounting for interchangeable brush

Technical drawing of cylindrical brush interchangeable

It is possible to fix a spiral roll brush normal or electric-welded (the closed pitch type only) or a number of single section rings, by movable threaded lock nut at one side only. This makes the replacement much easier.

Mounting on a Flanged Tube

Technical drawing of cylindrical brush mounted on a Flanged Tube

Cylindrical brush mounted on a Flanged Tube

The spiral brush or single section rings can be assembled in a bank between two flanges, firmly blocked by flanging the tube (maximum thickness : 2 mm ). This makes the brush much denser and uniform.

Spirals on Core

Technical drawing with dimensions of full core

Key
A = External Diameter D = External Diameter Shaft LU = Useful Length LT = Total Length	T1, T2 = Shaft Ends S1, S2 = Length Tapered Sections B1, B2 = Diameter Tapered Sections N = Keyway

Spirals on Tube

Technical drawing with dimensions of tube core

Keys
A = External Diameter D = External Diameter Tube LU = Useful Length LT = Total Length	T1, T2 = Tube Ends D1 = Diameter through-hole N = Keyway

Advantages of the Roller Brushes by SIT

technical brush cylindrical prodotta by SIT Tecnospazzole

Spiral brushes are the best you can get both in terms of price and maintenance, and of mechanical yield. The building flexibility allows to obtain combinations between dimensions, density, trim length and type of filament practically infinite, making it possible to perform every type of superficial treatment.

Table: rods and Tubes standard used for spiral brushes
Rods D [mm]	Tubes D [mm]
20	28 x 1,5	114 x 2
30	30 x 1,5	133 x 3
35	42 x 2	159 x 3
40	50 x 1,5	168 x 4
50	60 x 1,5	180 x 2
60	70 x 3	200 x 2
On demand different sizes	80 x 2	220 x 2,5
On demand different sizes	102 x 3

Cylindrical brushes shaped in nylon and synthetic plastic filaments

Cylindrical brushes shaped in abrasive nylon and other filaments by SIT

Shaped Cylindrical Brushes

For special applications and on specific design of the customer, the cylindrical brushes can be shaped with all types of filament: synthetic, natural, metallic, mixed.
Given the particular characteristics of performance depending on the profile of the brush, our technical office will advice on the best brush for the type of profile and the filament to be used.

Request For Quote

Brushes shaped and other technical roller brush by SIT

For every doubt our Technical Office is available to help you select the ideal brush for your application...

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