Material
Aluminum Wheel Core
Metal brush core material
An aluminum wheel core is the machined or formed center of a wire, abrasive or buffing wheel. It is light, so the wheel spins up easily and balances well, and it can be bored to a precise fit. The alloy, the hub section and the anchoring decide how much speed, heat and load it takes.
Datasheet values
- Density
- 2.70 g/cm³
- Common alloys
- 6061, 6063, 6082
- Core diameter
- 20–500 mm
- Use temperature
- up to 150–200°C
- Bore tolerance
- H7/H8 available
What is an aluminum wheel core?
A hub of aluminum, density 2.70 g/cm³, usually a 6000-series alloy such as 6061, 6063 or 6082, about 20–500 mm across, with bores to H7 or H8 tolerance where needed. It holds the fill or media and transmits rotation.
Why aluminum?
Low rotating mass, good machinability and atmospheric corrosion resistance. A light hub reduces the load on spindles and bearings and is easier to balance, which matters on fast deburring, static and polishing wheels. Our 120 mm aluminum oxide cup and 50 mm carbon fiber static wheel both use 6061 hubs.
How hot can it run?
Aluminum itself is suitable well above 200°C, but the brush limit is set by the alloy and temper, the hub section, the fill and its anchoring or adhesive, the bearings, the speed and the atmosphere. In brush assemblies, about 150–200°C is typical.
What about corrosion?
6000-series alloys resist ordinary atmospheres and many wet environments with the right finish, such as anodizing. Strong alkalis and chlorides attack aluminum, and contact with steel or copper alloys can cause galvanic corrosion, so the fill and fasteners are chosen with that in mind.
How do aluminum cores fail?
The wrong alloy, too thin a hub section, galvanic corrosion or running above the wheel’s rated speed. Each is avoided by designing the hub for the speed and load, and by never running a wheel faster than its rating.
What should you tell us?
The wheel diameter, bore and fitting, the tool or machine speed, the fill or media, the temperature and any chemicals, so the alloy, hub section and anchoring are chosen for the duty.
Questions buyers ask about Aluminum Wheel Core
Why use an aluminum hub on a brush wheel?
It is light, so the wheel spins up easily and balances well, and it machines to a precise bore.
Does an aluminum hub corrode?
It resists ordinary atmospheres; strong alkalis, chlorides and contact with dissimilar metals can attack it.
How fast can an aluminum-hub wheel run?
Only up to the wheel's rated speed, which depends on the hub design, the fill and the anchoring.
Where these figures come from
| Property | Published value | Source |
|---|---|---|
| Chemical resistance | Many 6000-series alloys offer useful atmospheric corrosion resistance; direct contact with dissimilar metals can cause galvanic corrosion. | Hydro Retrieved 2026-07-20 |
| Published datasheet figures |
|
Hydro Retrieved 2026-07-20 |
| Hardness and stiffness | Rigid; determined by alloy, temper and geometry rather than the generic aluminum name. | Hydro Retrieved 2026-07-20 |
| Limitations | Wrong alloy, insufficient hub section, galvanic corrosion or an incorrect speed rating can cause failure. | Hydro Retrieved 2026-07-20 |
| Temperature resistance | Suitable above 200°C; filament, adhesive and bearings set the assembly limit. | Hydro Retrieved 2026-07-20 |
| Water resistance | Suitable for many wet environments with the correct alloy and finish, not automatically for strong alkaline or chloride service. | Hydro Retrieved 2026-07-20 |
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We reply to every request within 24 hours, with a quotation or with the questions we need answered first. If the brush can be made on our existing tooling, we make the sample directly. If it needs new tooling, we quote a sample fee and a tooling fee, and the sample fee is credited against the bulk order. Need an NDA first? We sign yours before you send drawings, and the files you send are never shown to other customers.
- MOQ500 pcs for small hand-held brushes, 100 pcs for medium and large ones
- SampleTypically 3–7 days
- ProductionFrom 7 days after sample approval, by size and quantity
- Payment30% deposit and 70% before shipment above US$10,000; smaller orders on agreed terms
“We need a brush to remove wet residue from a stainless steel conveyor, about 800mm wide. The current brush wears quickly. We can send photos.”
“We sell drinkware and need a cleaning brush to include with the product. Quantity around 5,000 pieces.”