Flap Wheel 2-1/2" x 1" Mounted Aluminum Oxide, Pack of 10
Flap Wheel 2-1/2" x 1" Mounted Aluminum Oxide, Pack of 10
Available in stock (50000)
Longer flaps change how a flap wheel behaves. At 2-1/2" diameter the cloth flaps are long enough to wrap a tube, lay softly over a weld and keep cutting evenly for a long time, and the extra circumference means the wheel does useful work at the speed of a drill or a slow electric die grinder. The 1" face is wide enough for surfaces and narrow enough to steer.
Aluminum oxide cloth flaps on a plain 1/4" steel shank, sold as a pack of 10 in one grit from 40 to 320. Pipe and tube fabricators, tank and vessel shops, trailer and equipment builders, and woodturners working larger bowls choose this size when a 2" wheel wears too fast and a 3" wheel is too much for the tool.
- 2-1/2" diameter: longer flaps for a softer, cooler cut and more life per wheel than a 2"
- Cuts well at drill and slow die grinder speeds; ideal where a fast tool is not wanted
- Aluminum oxide cloth flaps expose fresh grain as they wear
- Plain 1/4" shank fits drill chucks, 1/4" collet die grinders and flex shafts
- 40 to 320 grit: scale and weld blending through satin finishing
- Pack of 10, converted in Anaheim, California; case pricing on request
Which grit should you choose for tube, plate and weldments?
The 2-1/2" x 1" is supplied on the plain shank only, a straight 1/4" steel shank for chucks and collets. If you need a 1/4-20 threaded shank, choose the 2" x 1" or 3" x 1" wheel. Grit is the choice to make here.
- 40 and 60 grit: heavy scale, rust, paint and spatter on pipe, angle and plate; rough castings. Fast, cool cutting with the long flaps, but a coarse scratch to refine.
- 80 and 100 grit: blending weld toes on tube and plate, removing hard-wheel marks, first pass on aluminum and brass. The working grits for fabrication.
- 120 and 180 grit: refining the blend before paint or powder coat; brushed finish on mild steel; pre-finish on stainless.
- 240 and 320 grit: satin finishing stainless and aluminum tube, pre-polish before compound, finish sanding on large turned bowls and furniture parts.
Grit guide for blending and finishing at drill speeds
| Grit | Use it for | Notes |
|---|---|---|
| 40–60 | Scale, rust, paint, spatter, castings | Refine with 80–120 before coating |
| 80–100 | Weld toes on tube and plate, grinder marks | The fabrication working grits |
| 120–180 | Pre-paint refinement, brushed steel | 180 under most coatings |
| 240–320 | Satin stainless and aluminum, pre-polish, wood | Light pressure keeps stainless bright |
What tools does a 2-1/2" x 1" mounted flap wheel fit?
- Electric and cordless drills. The 2-1/2" diameter makes this size a natural drill wheel: plenty of cutting speed at the tips without the RPM of a die grinder. A common choice for site work and maintenance.
- Electric die grinders with speed control and slower air die grinders, fitted with a 1/4" collet. Set the speed down; a 2-1/2" wheel is rated well below a small wheel.
- Right-angle die grinders with a 1/4" collet, for laying the face onto flat plate and the outside of tube.
- Flex shaft handpieces with a 1/4" chuck or collet, for long finishing sessions.
- Drill presses, bringing small parts to the wheel for repetitive deburring and finishing.
Chuck the shank as deep as possible and keep stick-out short; a larger wheel on a long stick-out whips. Always run within the RPM marked on the wheel or the tool's rating, whichever is lower. A full-speed air die grinder is likely to exceed the rating of a 2-1/2" wheel; check before you pull the trigger.
How to get the most out of it
- Check the speed first. The larger the wheel, the lower its speed rating. Match the tool to the RPM marked on the wheel; if the tool cannot be slowed to that speed, use a drill or a smaller wheel.
- Let the long flaps work. Light pressure; the tips should brush the surface, not fold flat. The extra flap length on a 2-1/2" wheel makes it more forgiving than a 1" wheel, but it still tears if leaned on.
- Keep the flaps trailing. Move the tool so the flap tips drag across the work. If it climbs a tube or grabs an edge, reverse direction.
- Wrap the tube. On pipe and tubing, run along the length with the face wrapped over the curve and overlap each pass by about half; the long flaps follow the radius without leaving flats.
- Blend welds lengthwise. Travel along the weld with the wheel tilted so the face rides the toe. Crossing the weld leaves a visible scratch pattern.
- Run dry, clear with air. Paint, galvanizing and aluminum load the flaps; blow the wheel out and reduce pressure.
- Move up one grit at a time and retire a wheel when the flaps are short and stiff, not before.
Use it for / don't use it for
Use it for
- Blending weld toes and grinder marks on tube frames, trailers, gates, racks and equipment
- Satin finishing stainless and aluminum tube, rail and bar
- Cleaning rust, scale and paint from pipe, angle, channel and plate
- Finishing the inside of tubing, tanks, drums and housings from about 2-1/2" ID up
- Deburring plate edges and large machined parts
- Finish sanding large turned bowls, platters and curved furniture components
Don't use it for
- Full-speed air die grinders that exceed the RPM marked on the wheel
- Grinding welds flush or heavy stock removal; use a flap disc or a belt
- Cutting or notching
- Grooves, keyways and tight inside corners; use a 1/2" wide wheel
- Bores under about 2-1/2", where the flaps cannot flex
- Threaded 1/4-20 mandrels; this size is plain shank only
Specifications
| Size | 2-1/2" diameter x 1" face width |
|---|---|
| Abrasive grain | Aluminum oxide on cloth flaps |
| Construction | Radially arranged cloth flaps on a hub, mounted on a steel shank |
| Shank | Plain 1/4" shank (not offered threaded in this size) |
| Grits offered | 40, 60, 80, 100, 120, 180, 240, 320 |
| Pack quantity | 10 wheels of one grit |
| Wet or dry | Dry |
| Speed | Within the RPM marked on the wheel or the tool's rating; lower than smaller wheels |
| Also available | 2" x 1" and 3" x 1" (plain or 1/4-20 threaded); 6" to 12" unmounted |
| Converted in | Anaheim, California |
Frequently asked questions
Why choose a 2-1/2" flap wheel instead of a 2" or 3"?
The 2-1/2" x 1" sits between them on purpose. It has noticeably longer flaps than a 2" wheel, so it runs cooler, wraps tube better and lasts longer, while staying lighter and easier to control on a drill or small die grinder than a 3" wheel. It is the size for tube and plate fabricators who work mostly with a drill.
Is the 2-1/2" x 1" available with a 1/4-20 threaded shank?
No. This size is stocked on the plain 1/4" steel shank only, which fits drill chucks, 1/4" collets and flex shaft handpieces. If you run threaded mandrels or extension arbors, the 2" x 1" and 3" x 1" mounted wheels are both offered with a 1/4-20 thread shank.
Can I run a 2-1/2" flap wheel on an air die grinder?
Only if the die grinder can be run at or below the RPM marked on the wheel. Many small air die grinders spin far faster than a 2-1/2" wheel is rated for, which throws flaps. A drill, a variable-speed electric die grinder turned down, or a flex shaft is the safer tool for this diameter.
What size tubing and tanks can it finish inside?
From about 2-1/2" inside diameter upward. In tubing, drums and tanks the long flaps lay against the wall and the 1" face finishes a band per pass; stroke in and out and rotate the part or the tool so the finish stays even. For smaller tubing step down to a 2" or 1-1/2" wheel.
Will it discolor stainless steel?
Not if you keep pressure light and the wheel moving. Heat tint on stainless comes from dwelling and pressing, which stands the flaps up and rubs instead of cuts. The long flaps of a 2-1/2" wheel run cooler than a small wheel, and drill speeds help further. Use 180 to 320 grit for the final satin pass in one direction.
Does it work on large wooden bowls and platters?
Yes. Woodturners use it in a drill or flex shaft to fair curves and remove tool marks on bowls and platters that are too large for a small wheel to cover evenly. Start at 80 or 120, finish at 180 to 320, keep the wheel moving and pressure light to avoid dishing or burning dense species.
How is the 10-pack sold?
Each pack contains 10 wheels of one grit on the plain 1/4" shank. Orders over $200 ship free, unused wheels in original packaging can be returned within 30 days, and case pricing for fabrication and maintenance shops is available by calling 714-646-3299 or emailing sales@maverickabrasives.com.
Related products and guides
- All flap wheels, mounted and unmounted
- 2" x 1" Mounted Aluminum Oxide Flap Wheels, pack of 10 (plain or threaded shank)
- 3" x 1" Mounted Aluminum Oxide Flap Wheels, pack of 10 (plain or threaded shank)
- 8" x 1" Unmounted Flap Wheels for bench grinders and polishing lathes
- Custom sanding belts made to order in about 3 days
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