250mm PBT Glass Edge Disc Brush

A 250mm PBT Glass Edge Disc Brush is a rotary disc brush mounted on a driven spindle in glass processing equipment. It contacts the edge of glass panels, sheets, or cut shapes to remove debris left by cutting, grinding, and polishing steps. The working element is a ring of PBT filaments anchored around a stainless-steel disc core. As the disc rotates, the filaments sweep across the edge and the surfaces immediately adjacent to it, carrying away dust, slurry, oil film, and loose fines.

The brush can run wet or dry. On lines with coolant or rinse water, the PBT filaments stay stiff and the stainless core resists corrosion. The quick-change coupling allows fast replacement when filaments wear. The disc is not a heavy grinding or polishing tool; it is a final cleaning and light deburring device that works after the grinding and polishing stages, before the glass moves to coating, lamination, or inspection.

The values below are typical for the 250mm platform. Filament diameter, trim length, disc thickness, and coupling interface are selected during project review to match the actual machine and cleaning step.

• Glass edge cleaning after grinding and polishing: removes swarf, slurry, and abrasive particles that remain on edges before coating or lamination.
• Pre-coating preparation: removes dust, oil film, and fingerprints from glass edges and near-edge surfaces on architectural or automotive glass.
• Deburring and edge blending: softens micro-chips and sharp edges on freshly cut or ground glass, reducing handling damage and improving safety.
• In-line inspection cleaning: ensures optical inspection systems see clean edges, reducing false rejects.
• Bevel and shaped edge processing: works on straight edges, bevels, and gentle curves when the machine guides the brush along the profile.

Start with the machine interface. The quick-change coupling must match the spindle or arbor on your line. Measure the mounting dimensions before ordering; a mismatch stops the line.

Check the edge geometry. The 250mm diameter covers typical glass edge thicknesses and allows contact without interfering with adjacent surfaces or machine guards. For tight curves, a smaller diameter disc or a cup brush may conform better. Confirm the minimum radius of any curved edges you need to clean.

Select the filament for the residue. Thinner filaments, 0.15–0.25mm, work for light dust and polishing residue removal. Thicker filaments, 0.30–0.50mm, handle deburring and heavier contamination. PBT is the default because it is tough, low in water absorption, and does not scratch uncoated glass. If the glass has a delicate coating, consider a softer nylon filament.

Set trim length and density. Shorter trim and higher density give firmer, more aggressive contact. Longer trim and lower density provide a softer wipe that conforms to slight edge irregularities. Choose based on whether the step is cleaning or deburring.

Consider wet or dry operation. PBT and the stainless disc handle both conditions. If the line uses coolant, the disc material and filament must be compatible with that chemistry. Specify the coolant type during selection.

When to use a different brush. If cleaning deep interior channels or holes, use a cup brush or end brush. If the residue is heavy mineral scale or silicone contamination, a wire brush or abrasive-impregnated filament brush may be required. For large flat surfaces rather than edges, a roller brush is more efficient. If the glass is extremely delicate and even PBT contact could mar it, a natural bristle brush may be the safer choice.

The 250mm disc is a platform, not a fixed part. We can adjust the following to fit your line and process:

• Diameter: other sizes such as 200mm or 300mm, or a custom diameter for a specific machine.
• Disc core: diameter, thickness, material — AISI 304 or 316 stainless steel, aluminum for lower rotating mass, or engineered plastic for lightweight applications.
• Filament: PBT standard; nylon PA6.12, polypropylene, abrasive-impregnated PBT, or other options. Filament diameter, trim length, and density are selected to meet the cleaning aggressiveness needed.
• Coupling: quick-change style, bolt circle, taper, keyway, or a custom machine interface. We can match your existing spindle or arbor.
• Balancing: dynamic balancing to the RPM you specify for high-speed lines.
• Color, marking, and packaging: custom color, pad print, laser marking, or project-specific packing.

If your project requires documentation, inspection, or third-party testing, we can support those requirements during the customization process.