Flap Wheel 1" x 1/2" Mounted Aluminum Oxide, Pack of 10
Flap Wheel 1" x 1/2" Mounted Aluminum Oxide, Pack of 10
Available in stock (50000)
The smallest wheel in our mounted line is for the places nothing else reaches: keyways, small bores, threads you need to chase clean, the root of a fillet weld on a bracket, and the inside of tubing around 1" ID. Aluminum oxide cloth flaps on a 1/4" steel shank give a die grinder or rotary tool a conforming abrasive face only 1/2" wide, so you can deburr and blend a narrow feature without touching the surfaces beside it.
We sell them as a pack of 10 in 40 through 320 grit, with a choice of plain 1/4" shank for collets and chucks or 1/4-20 threaded shank for threaded mandrels. Toolmakers, mold polishers, gunsmiths and fabricators doing tight-clearance deburring are the people who reorder this size.
- 1" diameter by 1/2" face reaches grooves, keyways and small bores larger wheels cannot enter
- Aluminum oxide cloth flaps expose fresh grain as they wear, so the cut stays consistent to the end
- Plain 1/4" shank or 1/4-20 threaded shank, both on steel
- Eight grits, 40 to 320, from burr removal to satin pre-polish
- Fits 1/4" collet die grinders, rotary tools, drill chucks and flex shafts
- Pack of 10 keeps a bench stocked; converted in Anaheim, California
Plain shank or 1/4-20 threaded shank: which should you order?
Both mount the same 1" x 1/2" aluminum oxide wheel; the difference is how it attaches to the tool.
- Plain Shank: a straight 1/4" steel shank. Choose it for a die grinder with a 1/4" collet, a rotary tool with a 1/4" collet, a drill chuck or a flex shaft handpiece. This is the right answer for most buyers.
- 1/4-20 Thread Shank: a 1/4-20 threaded stud instead of a straight shank. Choose it if your tool, extension arbor or mandrel has a matching 1/4-20 threaded hole; wheels can then be swapped without loosening a collet. Do not chuck a threaded stud in a collet as a substitute for a plain shank.
Grit choice on a wheel this small is about the burr, not the material. Every grit from 40 to 320 is offered in both shank styles, so buy a coarse and a fine pair for each job rather than trying to make one grit do everything.
Grit guide for deburring and blending small features
| Grit | Use it for | Notes |
|---|---|---|
| 40–60 | Heavy burrs, sharp drilled-hole edges, casting flash in pockets | Light pressure; the flaps do the work |
| 80–100 | General deburring, removing machining marks in a keyway or slot | The everyday starting grit for steel and aluminum |
| 120–180 | Blending the coarse scratch, edge-breaking on finished parts | Stops short of a visible scratch on most steels |
| 240–320 | Satin finish inside bores, pre-polish before compound | Follow with a mini buff and compound if a bright finish is needed |
Step no more than one band at a time. A 60 grit burr removal followed straight by 320 leaves 60 grit scratches under a satin sheen.
What tools does a 1" x 1/2" mounted flap wheel fit?
- Pneumatic and electric die grinders with a 1/4" collet, straight or right-angle. This is where a 1" wheel is happiest because the tool is light and easy to steer inside a part.
- Rotary tools fitted with a 1/4" collet. Standard 1/8" collets will not hold this shank.
- Flex shaft handpieces with a 1/4" collet or chuck, common on polishing and mold benches.
- Electric and cordless drills. Workable, but a drill runs slower than a die grinder, so a 1" wheel cuts gently; step down a grit if you need more bite.
- Threaded mandrels and extension arbors with a 1/4-20 hole, using the threaded shank version.
Seat the shank fully in the collet with only enough overhang to reach the work; a long stick-out on a small wheel invites chatter. Run within the RPM marked on the wheel or your tool's rating, whichever is lower.
How to get the most out of it
- Let the flaps flex. A flap wheel cuts with the tips of flexing cloth flaps. Press hard and the flaps stand up, stop cutting and tear. Light contact, steady movement.
- Keep the flaps trailing. Present the wheel so the edge of the flaps drags across the work rather than digging in. If the wheel grabs or chatters, flip your approach angle.
- Use the face, not the corner. Inside a bore, keep the 1/2" face flat to the wall and move the tool in and out. Riding on the corner of the wheel wears one edge and cuts a groove.
- Mind the speed. A small wheel tolerates higher RPM than a large one, but stay within the marked rating of the wheel and the tool. Excess speed shreds flaps and glazes aluminum oxide.
- Run dry. These are dry-use cloth wheels. Blow chips out of the flaps with air rather than dunking the wheel.
- Finish in sequence. Coarse to break the burr, medium to blend, fine for the final scratch. Change wheels; do not try to press harder with a worn one.
Use it for / don't use it for
Use it for
- Deburring keyways, slots, cross-drilled holes and small bores in steel, stainless and aluminum
- Blending the toe of a small fillet weld where a grinding wheel would gouge
- Cleaning casting flash, scale and rust out of pockets and recesses
- Satin finishing the inside of tubing and fittings around 1" ID
- Softening sharp edges on small machined parts before plating or anodizing
- Detail work on wood turnings, carvings and plastic or composite parts
Don't use it for
- Heavy stock removal or grinding a weld flush; use a flap disc or a coarse belt
- Cutting or notching; a flap wheel is not a cut-off wheel
- Flat panels or long tube exteriors, where a 2" or 3" wheel with a wider face works faster
- Rotary tools with only a 1/8" collet
- Running past the RPM marked on the wheel
Specifications
| Size | 1" diameter x 1/2" face width |
|---|---|
| Abrasive grain | Aluminum oxide on cloth flaps |
| Construction | Radially arranged cloth flaps, mounted on a steel shank |
| Shank options | Plain 1/4" shank or 1/4-20 threaded shank |
| Grits offered | 40, 60, 80, 100, 120, 180, 240, 320 |
| Pack quantity | 10 wheels of one grit and shank style |
| Wet or dry | Dry |
| Speed | Stay within the RPM marked on the wheel or your tool's rating |
| Also available | Mounted flap wheels 1" to 3" diameter; unmounted 6" to 12" with arbor holes |
| Converted in | Anaheim, California |
Frequently asked questions
Will a 1" x 1/2" flap wheel fit a standard rotary tool?
Only if the rotary tool has a 1/4" collet or chuck. The 1" x 1/2" wheel is mounted on a 1/4" steel shank, which is the die grinder standard; the 1/8" collet supplied with many hobby rotary tools will not hold it. Most rotary tool makers sell a 1/4" collet or keyless chuck as an accessory.
What is the 1/4-20 thread shank for?
The 1/4-20 thread shank version has a threaded stud in place of the straight shank. It screws into a mandrel, extension arbor or tool spindle with a 1/4-20 tapped hole, which lets you change wheels without opening a collet. If your tool uses a collet or a drill chuck, order the plain shank instead.
Which grit should I start with for deburring a drilled hole in steel?
Start at 80 grit for a typical drilled or machined burr in steel or stainless. Use 40 or 60 only for heavy burrs or casting flash, then move to 120 or 180 to blend the edge. If the part will be plated or must look finished, end at 240 or 320 for a uniform satin edge.
How much pressure should I use with a 1" flap wheel?
Very little. The 1" x 1/2" wheel cuts with the tips of flexing aluminum oxide flaps, and pressing hard stands the flaps up so they rub instead of cut, then tears them off. Keep the wheel moving with light contact and let speed and grit do the work. If it will not cut, step down a grit rather than pushing.
Can I use it inside tubing?
Yes, that is one of its main jobs. A 1" diameter wheel with a 1/2" face will work inside fittings and tubing around 1" inside diameter and slightly larger, cleaning weld color, scale or burrs. Keep the face flat to the wall and stroke in and out so you do not cut a ring in one spot.
How fast should I run it?
Run within the RPM marked on the wheel or your tool's rated speed, whichever is lower. Smaller wheels tolerate higher speed than larger ones, but a die grinder run flat out on a worn wheel throws flaps. On a drill the speed is lower and the cut gentler, which suits fine grits and satin finishing.
Are there quantity prices on the 10-pack?
Yes. Each pack contains 10 wheels of a single grit and shank style. Orders over $200 ship free, unused wheels in original packaging can be returned within 30 days, and case pricing for production shops is available by calling 714-646-3299 or emailing sales@maverickabrasives.com.
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