Where there is a significant investment in the core, we can replace the brush and if needed repair the core, both to a “like new” condition. In house we manufacture simple to complex tight tolerance cores with dynamic balancing.
Mounted brushes allow different densities by adjusting the “pitch or turns per ft.”
A coil brush with a large pitch, or few turns per ft. can resemble an auger, where a coil brush with a small pitch or many turns per ft. will give you the greatest density. On on a high density coil brush the turns of the brush may not even be visible.
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14 Turns Per Ft.
As shown left hand helix.
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28 Turns Per Ft.
As shown left hand helix.
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32 Turns Per Ft.
As shown left hand helix.
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For information on brushes that are not permanently mounted to a core see:
Loose Coil Brush