Finishing tough stainless steel usually means cycling through multiple grit steps on the CNC, which eats up cycle time. First-gen finishing brushes often hit a wall on fine surface peaks, while standard nylon brushes tend to smear or gum up under pressure.
Shop floor tests showed a much cleaner route with our newly developed Gen-2 ceramic fiber brush. Instead of abrasive grains glued to nylon, thousands of pure ceramic micro-fibers act as continuous self-sharpening cutting tips. We redesigned the fiber structure and tip wear so it cuts noticeably sharper and holds its edge far longer than the previous version.
Here are the exact machining parameters from the latest test runs:
Brush Spec: Gen-2 Ceramic Fiber Disc Brush (35 mm OD, resin-injected base)
Spindle Speed: 8,000 RPM (around 14.7 m/s rim speed) — Hits the sweet spot where fiber tips shave cleanly instead of rubbing.
Feed Rate: 4 mm/s — Gives the brush enough overlapping time to level tool marks down flat.
Cut Depth: 1.0 mm — Keeps bristles stiff enough to cut without bending out of shape or smearing.
Coolant: Flooded — Flushes out metal chips so they don't pack between fibers, keeping heat low.
Roughness: Dropped from Ra 1.6–3.2 µm down to Ra 0.2–0.4 µm (one run went from Ra 1.6 straight to Ra 0.3 µm) — Noticeably cleaner finish than Gen-1.
For plants running automated cells, the takeaway is simple: moving to the Gen-2 ceramic fiber brush lets you skip multi-stage polishing lines entirely, hitting Ra 0.3 µm right on the spindle.
Shanghai Longguang Industrial Brush Co., Ltd, an industrial brush manufacturer, established in 2004 in Shanghai China. With continuous development, it has established a number of subsidiaries and has advanced production equipment and supporting production technology. In order to meet the high quality and stability requirements of our customers, Longguang has continuously introduced high-advanced brushing equipment.
