Weiler Abrasives — Complete Product Guide
Summary
Weiler Abrasives is a US manufacturer headquartered in Cresco, Pennsylvania, founded in 1900 and operating as the Weiler Abrasives Group. They are not a cutting-tool company. They make wire brushes, flap discs, coated abrasives, bonded abrasives, and abrasive-filled nylon brushes — the category of tooling that lives on angle grinders, bench grinders, and portable die grinders on the shop floor and in the weld bay.
Weiler's core customer is a fabrication shop or structural steel contractor running multiple angle grinders through a shift. Their product lines are designed around weld cleaning, deburring, surface prep before paint or coating, and blending welds flush. The Tiger Disc ceramic flap disc is their most recognized SKU in North American fab shops. They are not the go-to brand for precision grinding or cylindrical grinding — that territory belongs to Norton, Saint-Gobain, and 3M. Weiler owns the space between the CNC machine and the paint booth.
What Weiler is best for
- Weld cleaning and spatter removal — wire wheel brushes (Tiger Paw line) on carbon steel, stainless, and aluminum weldments
- Flap disc grinding and blending — Tiger Disc ceramic flap discs for angle grinder stock removal and blending on structural steel and weld seams
- Deburring without stock removal — Nylox abrasive-filled nylon brushes and Burr-Rx wheels for edges that need burr removal but can't afford dimension change
- Surface prep before coating — coated abrasive flap discs and fiber discs to achieve SSPC or anchor-profile surface finish requirements on steel
- Stainless weld blending — non-contaminating wire brush products specified where cross-contamination with carbon steel is a quality concern
If your shop needs a precision surface grinder wheel or a vitrified-bond grinding wheel for tight-tolerance work, look at Norton or Saint-Gobain. Weiler is for hand-tool and portable-tool finishing operations.
Brand architecture
Tiger Disc (ceramic flap disc — flagship line)
The Tiger Disc is Weiler's best-known product. It's a Type 27 or Type 29 flap disc with ceramic alumina grain on a fiberglass or plastic backing plate. Ceramic grain is self-sharpening under heat and pressure, which means the disc cuts faster and lasts longer than zirconia or aluminum oxide in the same application. Tiger Disc comes in standard and "Tiger Disc Trimmable" variants — the trimmable version lets an operator trim the backing plate with snips to expose fresh abrasive when the outer ring wears down.
Grit range runs roughly 40–120 grit. Type 29 (conical profile) is for aggressive stock removal at an angle; Type 27 (flat) is for blending and finishing closer to flush. Most steel fab shops keep 60-grit Type 29 Tiger Disc at every grinder station as a default.
Tiger Paw (wheel and cup brushes)
Tiger Paw is Weiler's premium wire brush line for angle grinders and bench grinders. Products include knotted-wire cup brushes, crimped-wire wheel brushes, and stringer bead brushes for getting into weld root passes. Knotted wire is more aggressive and lasts longer; crimped wire is less aggressive and conforms to irregular surfaces. Available in carbon steel wire (general fab), stainless steel wire (stainless work and non-contamination requirements), and brass wire (non-sparking environments).
Brush face conditioning before use — running the brush against a sacrificial surface for a few seconds to break in wire ends — noticeably extends service life on all Tiger Paw products.
Nylox (abrasive-filled nylon brushes)
Nylox is Weiler's line of nylon filament brushes with abrasive grain embedded in the nylon. The abrasive works at the filament tip as the brush flexes. This gives you controlled deburring action that follows a part's geometry without removing meaningful stock. Available in silicon carbide and aluminum oxide grain options; grain size is embedded in the filament specification rather than a separate grit number.
These are specified in CNC machine shop deburring cells, aerospace part finishing, and any application where a wire brush would be too aggressive or leave embedded wire fragments.
Burr-Rx (burr removal wheels)
Burr-Rx wheels are a subset of the abrasive-nylon concept, shaped as mounted wheel or disc configurations for bench grinder or die grinder use. Designed specifically for edge deburring on machined parts — particularly drilled holes, milled edges, and cross-holes. The flexible filaments reach into recesses a rigid abrasive can't touch. Not for stock removal. Not for weld cleaning. Strictly edge work.
Coated and bonded abrasives (fiber discs, resin wheels)
Weiler makes standard resin-bond fiber discs (aluminum oxide and zirconia grain) for angle grinders, as well as depressed-center grinding wheels (Type 27 bonded wheels) for heavy stock removal. These are competent mid-tier products, though in this category they compete with a long list of options from 3M, Camel, and Norton. Their differentiation is availability through welding supply distributors who already stock Weiler wire brushes.
Product cheat sheet
| Product line | Tool type | Grain / wire | Primary use |
|---|---|---|---|
| Tiger Disc | Flap disc (T27/T29) | Ceramic alumina, 40–120 grit | Weld blending, stock removal on steel |
| Tiger Paw knotted | Wheel / cup brush | Carbon steel or SS wire | Aggressive weld cleaning, rust removal |
| Tiger Paw crimped | Wheel / cup brush | Carbon steel or SS wire | Light cleaning, paint removal |
| Nylox | Abrasive nylon brush | SiC or AlO in nylon filament | Deburring, surface conditioning |
| Burr-Rx | Nylon wheel / disc | AlO in nylon filament | Edge deburring on machined parts |
| Fiber disc | Backing disc | Zirconia or AlO, 24–120 grit | Aggressive grinding, weld prep |
When to use Weiler vs. alternatives
- vs. 3M Cubitron II flap discs: Cubitron II ceramic grain is arguably the sharpest-cutting abrasive on the market. Weiler Tiger Disc is a credible alternative at a lower price point and is more available through welding supply channels. If you're running production hours on one grinder, Cubitron II may earn its premium. For general fab shop use, Tiger Disc is the default a lot of shops don't question.
- vs. Norton Blaze / Rapid Strip: Norton leads in precision grinding wheels and depressed-center bonded wheels for OD grinding. Weiler doesn't compete on precision grinding. For surface prep and weld cleaning, Norton and Weiler are peers.
- vs. Osborn / Pferd wire brushes: Osborn and Pferd are the other main wire brush brands in North America. Pferd is German-made and tends to be the premium reference for consistency and wire quality. Weiler Tiger Paw competes on price and availability. For stainless or aerospace work where wire contamination is audited, Pferd is worth the premium. For carbon-steel production welding, Tiger Paw holds its own.
- vs. Scotch-Brite (3M surface conditioning): Scotch-Brite non-woven discs are the reference for fine surface conditioning and scratch pattern work. Weiler Nylox fills a different niche — more directional deburring, less uniform scratch blending. They're not the same product used for the same job.
Related articles
- Angle grinder abrasive selection — flap disc vs. fiber disc vs. grinding wheel
- Wire brush selection — crimped vs. knotted, carbon vs. stainless
- Deburring methods — mechanical, abrasive, and thermal
- Weld cleaning and surface prep
- Surface finish and Ra — how abrasive grit maps to finish
Ask 4man
Weiler's product lines are straightforward once you know what operation you're doing. Tell 4man the material, the grinder size, and whether you're cleaning welds, deburring edges, or prepping for coating — it'll point you to the right Weiler product and the grit or wire spec to start with.