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Mounted Flap Wheel Manufacturer
Rex manufactures mounted flap wheels for deburring, sanding and pre-polish preparation in bores, pipe interiors, contours and tight spaces. Five abrasives are available: aluminum oxide, calcined aluminum oxide, zirconia, silicon carbide and ceramic. Sizes and shank diameters can be customized, with OEM private label and volume supply.
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- Mounted Flap Wheels
Where They Are Used
Use mounted flap wheels where a larger disc cannot reach:
- Deburring pipe interiors and holes
- Contours, radii and mold cavities
- Local finishing on molds and parts
- Tight areas around welds
How to Choose the Size
A mounted flap wheel is specified by three dimensions:
- Wheel diameter: choose it by the bore size or the space to be sanded; the wheel has to fit
- Wheel width: a wider contact face works faster; a narrower one is more flexible
- Shank diameter: match it to the collet of your die grinder or drill; 6 mm and 1/4 in are common
Available sizes are confirmed by Rex when quoting.
Speed and Overhang: The Key Safety Point
The maximum speed of a mounted flap wheel depends on how far the shank extends from the collet: the longer the overhang, the lower the permitted speed.
- Follow the maximum speed and overhang marked on the product
- Insert as much of the shank into the collet as possible to reduce overhang
- Smaller wheel diameters need higher speeds to reach a suitable surface speed
- If you notice clear vibration after start-up, stop the tool at once and check it
Coated abrasives for the European market follow the EN 13743 safety standard, which sets clear marking requirements.
5 Abrasives
Sizes, hole types and grit ranges are confirmed by Rex when quoting.
Aluminum oxide
general purpose for steel, wood and plastic
Calcined aluminum oxide
sharper, longer life
Zirconia
stainless steel and alloy steel
Silicon carbide
non-ferrous metals and non-metals
Ceramic
hard-to-grind materials and heavy-load work
Mounted Flap Wheels vs. Mounted Points vs. Flap Discs
| Mounted Flap Wheels | Mounted Points (Bonded) | Flap Discs | |
|---|---|---|---|
| Best for | Bores, contours, tight spaces | Bores, mold cavities | Flat surfaces, welds |
| Finish | Smooth; sands and blends | Fast removal, rough finish | Smooth |
| Flexibility | High; conforms to shapes | None | Medium |
| Tool | Die grinder, drill | Die grinder | Angle grinder |
Shank Options
- Plain (smooth) shank 6 mm and 1/4 in (6.35 mm) are common; clamps directly in the collet
- Other shank types (such as threaded shank): specify them in your inquiry; Rex confirms when quoting
Grit
- P40–P60 deburring, flash removal, light grinding
- P80–P120 blending, edge finishing, surface cleaning
- P150–P240 fine sanding, pre-polish preparation
- Above P240 refining before final finishing
Industries
Mold making and machining
deburring cavities and hole edges
Stainless steel pipe and fabrication
sanding pipe interiors, finishing around welds
Automotive parts
internal sanding of castings and valve bodies
Woodworking
sanding contours and carved parts
Rex's Production Process
01. Cloth slitting
slitting into narrow strips of consistent flap width
02. Flap stacking
arranging a set number of flaps into a wheel
03. Gluing
bonding the flaps to the core
04. Curing
drying to cure the bond
05. Inspection
checking shank concentricity, flap retention and balance
06. Packing
bulk or retail packaging
Why Rex for Mounted Flap Wheels
5 abrasives
covering everything from general-purpose to hard-to-grind materials
Shank inspection
concentricity and flap retention are checked to reduce vibration and flap loss
Order together with flap discs
same flap-stacking process, so you can combine both product lines in one purchase
Tool Brands: Retail Kits
Mounted flap wheels work well as mixed kits for tool stores and e-commerce:
- Mixed-size kits: several wheel diameters in one box for different bore sizes
- Mixed-grit kits: coarse, medium and fine in one box, from deburring to fine sanding
- Packaging: blister card, plastic case or color box, printed with your brand and barcode
Tell Rex your sales channel and price point, and Rex will recommend size and grit combinations.
Products Often Bought With Mounted Flap Wheels
Flap Discs
Same flap-stacking process; one handles flat surfaces, the other handles bores
Sandpaper and emery cloth
Hand finishing in tight spots
Strip discs (shaft-mounted)
Surface cleaning on a die grinder or drill
What to Include in Your RFQ
- Wheel diameter × width × shank diameter
- Abrasive and grit
- Workpiece and area to be processed (for example, bore diameter)
- Packaging and quantity
MOQ, lead time and pricing are confirmed by Rex’s sales team when quoting.
Frequently Asked Questions
We work systematically to integrate corporate responsibility in our core business and make our expertise available for the benefit of the societies where we operate.
Can I use mounted flap wheels with a drill?
Yes, but drills usually run slower, so they work less efficiently than a die grinder. For small wheel diameters, a die grinder is recommended.
Can you pack them under our brand?
Yes. Labels, barcodes and retail packaging can all be customized.
Are 6 mm and 1/4 in shanks interchangeable?
No. 6 mm and 6.35 mm collets are different. Choose the shank to match your tool’s collet.
Can we test samples first?
Yes. Samples are made before volume production, and the sample policy is confirmed when quoting.
Advanced Coated Abrasive Factory in China
Get a Quote
Send the product, size, grit and quantity, plus any sample photos or drawings. Rex’s sales team will reply with a quote and a sample plan.