Rubber Conveyor Belt Brush

A Rubber Conveyor Belt Brush is a transverse-mounted sweeping brush built around a rubber base extrusion and a continuous row of synthetic filaments. It is installed above or below the belt at a point where material has already started to cling or fall: behind the head pulley, on the return run, at transfer points, or across a web path. As the belt moves, the filament tips sweep the surface and loosen the film, crumbs, powder, or sticky layer that would otherwise travel back under the conveyor.

The rubber base is what makes this brush different from a plain metal-backed strip brush. It flexes enough to follow normal belt movement, yet holds the fill in a stable, evenly spaced row. The rubber also acts as a resilient mounting element: when the belt passes a splice, seam, or minor irregularity, the base compresses slightly instead of transmitting the impact into the frame. The result is a brush that can stay engaged with the belt without being rigid enough to cause wear or chatter.

This is a sweeping tool, not a scraper. A rubber conveyor belt brush is intended for fine, loose, soft, or sticky material that a hard scraper would either miss or smear across the belt. It works best as a continuous contact cleaner on dry or lightly damp belts. For heavy crusted deposits, hard scale, or material frozen to the belt, a precleaner or scraper should normally run ahead of the brush, with the brush used as the finishing contact.

All values can be adjusted to the conveyor frame, belt width, residue type, and installation clearance. The brush can be supplied as a straight transverse strip or as a rotating cylinder where the application calls for driven contact.

• Food processing conveyors that carry flour, crumbs, sugar, seasoning, or sticky product film on flat or troughed belts, where carryback collects under the return rollers.
• Packaging lines where labels, film fragments, tape pieces, and carton dust drift onto belts and transfer points and need continuous removal.
• Wood, panel, and board production where sawdust, chips, and fibers cling to belt surfaces and machine guides.
• Agriculture and grain handling where fine dust, chaff, and fibrous material build up on conveyor belts and rollers.
• Recycling and sorting lines where film, labels, paper scraps, and light sticky material wrap around pulleys if not swept off.
• General material handling where sticky carryback from minerals, powders, or processed product causes premature roller and bearing failure.

Measure the belt and mounting clearance first. The brush working width must cover the full contact surface of the belt plus the specified edge overlap. Check the transverse rail position and available height above the belt; trim length is selected so the filaments reach the belt without bottoming against the support channel. A brush that is too long or too wide will interfere with the frame, while one that is too short leaves an uncleaned center strip.

Match the filament to the residue and operating environment. Polypropylene is the standard choice for wet or chemically exposed lines because it does not absorb water and resists many cleaning agents. Nylon PA6 or PA6.6 is stiffer and more abrasion-resistant, which suits dry, fibrous, or slightly abrasive carryback. If the belt carries hot product, oil, or aggressive washdown chemicals, specify the exact conditions so the correct nylon grade or a project-specific fill can be selected.

Set contact pressure, not just contact. Radial engagement of 2–10 mm controls how far the filament tips bend into the belt. Too little engagement leaves residue in the texture of the belt cover. Too much engagement increases drag, accelerates filament tip wear, and can overheat the drive if multiple brushes are installed. Start at the low end of the range, inspect the belt after one shift, and increase only as needed.

Consider the rubber compound for the environment. Standard natural/SBR rubber works for normal indoor service. EPDM holds up better outdoors and in higher-temperature or washdown areas. If frequent oil contact is expected, specify an oil-resistant compound rather than relying on standard rubber.

Decide between a stationary strip and a driven roller. A stationary rubber-backed strip is the lowest-maintenance choice for most return-run and transfer-point cleaning. A cylindrical roller brush with a shaft is used where the belt surface needs a more aggressive sweeping action, where the brush must be driven, or where the installation rotates the brush for even filament wear.

Use the right cleaning combination. If the belt carries baked-on, crusted, or hard material, install a scraper or precleaner ahead of this brush. The rubber conveyor belt brush is the finishing sweep for loose and sticky residue, not the primary removal tool for heavy buildup. If the residue contains metal particles, use magnetic separation rather than relying on brush contact.

Rubber conveyor belt brushes are built to the conveyor rather than picked off the shelf. For a custom configuration, provide the belt width, belt surface material, operating speed, residue type, washdown or chemical exposure, temperature, available mounting clearance, and a drawing or photo of the installation point.

• Working width and segmentation — continuous strips from 100 mm up to 3000 mm, or multiple shorter sections with end gaps for long conveyors and easier handling.
• Rubber base profile — flat back, channel, clamp-in, or a custom extrusion shape that matches the existing mounting rail.
• Filament material and density — PP, PA6, or PA6.6 in fine, medium, or high fill density, depending on the residue and belt texture.
• Trim length and face angle — straight, angled, or beveled filament face so the brush suits the direction of belt travel and available height.
• Cylinder option — core diameter, shaft diameter, bearing interfaces, and overall diameter when a driven or idler roller brush is required.
• Color and identification — custom base or filament color for zone marking, replacement tracking, or safety visibility.
• Packaging — bulk lengths, individually wrapped segments, or project-specific packing for multi-site delivery.

We can also support your project with material documentation, inspection plans, and third-party testing where the application or customer specification requires it.