Rod Brushes e Circular Disc Brushes



Brush diameter
Type in Abrasive Nylon, coded AY or AD, are indicated with the nominal working diameter, so the actual diameter is larger as they are designed to work in compression or oversize compared to the bore.
Other types (stainless steel, steel, brass, nylon, bristle) coded A, S, C, B, N, H, Butterfly are indicated with the actual diameter of the brush. Any increase in diameter compared to the hole to be worked on must be calculated based on the application. Generally, an increase of around 20% compared to the diameter is recommended.
In the case of working on threads, the brush diameter should be equal to the maximum diameter of the thread. Therefore, if using Abrasive Nylon, verify the actual diameter and not the nominal one.
For example, for an M8 stainless steel thread, you should choose a brush like 85S312, and for Abrasive Nylon, a brush like 85AY281. The brushes 81A and 85S already have a medium-soft filament up to a diameter of 12.7mm. For larger diameters, the recommended stainless steel brushes are Butterfly or the models 85Sx and 85Sxx with fine and extra-fine wire.


Circular disc brushes are often an excellent tool for deburring operations, both manual and with CNC or robots, if the correct choice of diameter and filament is made. For use on CNC, we suggest models C and CY and CG (Ceramics) with adapter stems UA1 and UA4, which allow the installation of two brushes side by side to achieve a higher density of filaments. They can be used on external or internal surfaces or complex surfaces. The working pressure depends on various factors such as the type of operation, the material being worked, the brush diameter, etc. In case of doubts, consult our technicians.


The cross-sectional diameter of the abrasive nylon bristles varies depending on the grit, below are some examples: