Cup Brushes

A cup brush is used in light and medium duty applications to clean flat or irregular surfaces as well as bevel buffing. There are several manufacturing styles for cup brushes. A traditional cup brush just has steel wires extending from it in a circle all the way around the head. For more heavy duty uses, cup brushes are made with a series of spiraled steel wires that are more like thick cables.

Cup Brushes – Spiral Brushes, Inc.

Miniature cup brushes connected to a long arm are also made to clean hard to reach areas or components. The mounting portion of cup brush usually has a threaded hole or a stem that can be fitted into a drill head or some other rotation machine.

A cup brush with a threaded nut is usually designed specifically for use with an angle grinder for smooth and efficient operation. Most power tools that are used with cup brushes have varying speeds to help control the operation of the brush.

Cup Brushes – Spiral Brushes, Inc.

Cup brushes are very common in the welding industry where they are used along with other steel brushes to put the finishing touches on metal products.

A cup brush can be used to smooth out newly welded joints and get a product ready for paint. Welding professionals are always careful to make sure no flammable chemicals or other materials are present when they use a steel brush because the friction at high speeds creates a wave of sparks.