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LONGGUANG currently has more than 3,000 industrial brush products, covering all industries such as auto parts, mechanical parts, hydraulic parts, etc. Our products are widely used in the polishing, de-rusting, and deburring of metal parts processing; metal sheet, strip cleaning, grinding, descaling; finishing of textile, printing, and dyeing leather products, sanding; dust removal, grinding and coating of paper and artificial boards Glue; cleaning, polishing, deburring of circuit boards; cleaning of glass and LCD substrates; cleaning and descaling of pipes; sealing and dust proofing of furniture, storage, and machinery.
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Our aluminum oxide tapered double spiral tube brush is manufactured from aluminum oxide abrasive nylon and engineered for irregular bore deburring, with key advantages including customizable brush body shape, designed for irregular holes and smoother cutting action.
Also known as AO tapered double spiral tube brush, custom aluminum oxide tapered double spiral tube brush or industrial tube brush. Also referenced as a tapered aluminum oxide abrasive filament internal hole brush : the filament diameter tapers gradually along the core so the brush enters tapered, stepped and necked-in bores without binding, and the metal straight shank chucks directly into machining centers, drill presses and electric drills.
Customizable according to customer requirements – brush body shape and filament profile are fully customizable
Filament Material: Aluminum oxide (AO) abrasive-filled nylon filaments Handle/Stem Material: Steel twisted core with a metal straight shank for secure chucking
What Makes Custom-Shape AO Abrasive Tube Brushes Different?
Standard tube brushes are designed for straight, cylindrical bores. But many precision components feature complex internal geometries – stepped holes with multiple diameters, tapered-bottom blind holes, conical cavities, and other irregular shapes that standard brushes cannot effectively clean or deburr.
Our Double Spiral AO Abrasive Tube Brush – Custom Shape solves this problem. The brush body shape and filament profile are fully customizable to match your exact internal cavity geometry. Whether you need a stepped profile to clean multi-diameter holes, a tapered profile for conical bottoms, or a completely custom shape for unique irregular cavities, we can engineer the brush to fit.
The aluminum oxide (AO) abrasive filaments deliver a smoother cutting action than silicon carbide, making this brush particularly suitable for aluminum alloy and other soft alloy applications where over-cutting or surface scratching must be avoided.
Custom Shape vs. Standard Cylindrical Tube Brush
| Feature | Custom Shape (This Product) | Standard Cylindrical |
|---|---|---|
| Stepped holes | Excellent (custom profile) | Poor (cannot reach all diameters) |
| Tapered-bottom holes | Excellent (tapered profile) | Poor (no bottom contact) |
| Irregular cavities | Fully customizable | Not applicable |
| Filament-to-wall contact | Full contact across all surfaces | Partial or no contact |
| Best for | Complex internal geometries | Straight cylindrical bores |
| Aluminum/soft alloy deburring | Excellent (smoother cutting) | Good |
Comparison with Silicon Carbide (SiC) Abrasive Tube Brush
| Feature | AO Abrasive (This Product) | SiC Abrasive (Standard) |
|---|---|---|
| Hardness | Moderate | High |
| Cutting action | Smooth & stable | Aggressive |
| Best for | Aluminum, brass, soft alloys | Steel, iron, hard metals |
| Surface finish | Excellent (scratch-free) | Good |
| Risk of over-cutting on soft metals | Low | Moderate |
| Automotive applications | Widely used | Widely used |
For applications requiring aggressive cutting on ferrous metals and hardened surfaces, see our standard Double Spiral Silicon Carbide Abrasive Tube Brush .
Key Applications in Detail
Stepped Holes
Components with multiple internal diameters – such as hydraulic valve bodies, engine cylinders, and precision housings – require cleaning and deburring across all bore sections. Our custom-shape brush features a stepped filament profile that contacts each diameter section, ensuring complete surface treatment.
Tapered-Bottom Holes
Conical-bottom blind holes are common in fluid power components and aerospace parts. Standard flat-bottom brushes cannot properly contact the tapered surface. Our custom brush with tapered filament profile matches the cone angle, delivering abrasive action to the entire bottom surface.
Irregular-Shaped Internal Cavities
For completely unique internal geometries – oval bores, D-shaped cavities, or multi-lobed passages – we engineer a brush body and filament profile that precisely matches the cavity shape, ensuring uniform cleaning and deburring across all internal surfaces.
Aluminum Alloy Components
The smoother cutting action of AO abrasive makes this brush ideal for aluminum alloy parts in automotive applications, such as transmission housings, intake manifolds, and cylinder heads, where over-cutting or surface scratching cannot be tolerated.
For Aggressive Cutting on Hard Materials
If your application requires aggressive cutting action on steel, iron, or hardened materials , consider our Double Spiral Silicon Carbide Abrasive Tube Brush .
For non-abrasive internal cleaning with steel wire, see our Single Spiral Steel Tube Brush .
Q1: What kinds of holes is this AO tapered double spiral tube brush designed for?
It is built for irregular internal geometries - stepped holes with multiple diameters, tapered-bottom blind holes, conical cavities and other non-cylindrical internal cavities. Both the brush body shape and the filament profile are fully customizable, so the fill reaches surfaces that a straight cylindrical tube brush cannot contact.
Q2: Why choose aluminum oxide abrasive instead of silicon carbide?
Aluminum oxide has slightly lower hardness than silicon carbide, which produces a smoother, more controlled cutting action with a lower risk of over-cutting. That makes it the better choice for aluminum alloy, brass, copper and other soft alloys, while silicon carbide remains the option for steel, iron and hard metals.
Q3: Which industries use the aluminum oxide tapered double spiral tube brush?
It is widely used in automotive parts manufacturing and machining - engine blocks, transmission housings and aluminum castings - as well as precision aperture grinding, hydraulic valve block cleaning, and deburring of aluminum and soft alloy components in the aerospace and home appliance industries.
Q4: Does the abrasive filament shed during operation?
No. The aluminum oxide grit is bonded into the nylon filament and the bristles do not fall off, so the brush is safe for precision assemblies and critical components. It also delivers a scratch-free surface finish on soft metals.
Q5: Can the brush be matched to my part geometry?
Yes. Brush body shape, filament profile and grit size can all be tailored to your workpiece. Share your workpiece material, internal cavity geometry and equipment details and our engineering team will recommend the correct configuration.
Contact us for technical recommendations, custom sizing, and bulk order quotes. Share your workpiece material, geometry, and equipment details for a prompt engineering review.
Related Products You May Need:
Why Choose Custom-Shape AO Abrasive Tube Brushes?
For manufacturers dealing with complex internal geometries on aluminum and soft alloy components , our custom-shape AO abrasive tube brush delivers:
Customization Available
We offer complete customization of brush body shape, filament profile (stepped, tapered, or irregular), brush diameter, stem length, abrasive grit size, and filament density to match your exact irregular hole cleaning and deburring requirements. Contact us with your part drawing for engineering recommendations.
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