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CEO: Alan
Email: alan@virostech.com
Phone: +86-15215693689

Sales Manager: Edith
Email: Edith@virostech.com
Phone: +86-15215693689

Papua New Guinea Abrasive Nylon Internal Coil Brush

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Papua New GuineaSpiral Coil Brush

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Product Description

Abrasive Nylon Internal Coil Brush

1. Product Overview

This inner wound spiral coil brush is a modular split spiral cleaning roller, formed by continuous inward spiral winding of circular wire brush slices around a hollow inner sleeve, belonging to the inner winding spiral coil brush series.

Different from outer-wound spiral brushes with outward wrapped bristles and large residue discharge gaps, its brass wire brush slices are tightly wound inward along the inner sleeve axis. All bristle tufts gather toward the central hollow hole, forming an ultra-dense seamless compact cleaning surface with no obvious gaps between spiral layers.

The integrated fixed plastic retaining rings lock each circular wire brush slice firmly to avoid axial sliding during rotation. The hollow central through-hole can be directly sleeved on standard drive shafts of precision processing equipment. The dense inner-wound bristle layout achieves full contact on tiny inner tube walls, precision hardware curved surfaces and mold tiny grooves without missing cleaning blind spots. It is widely purchased by precision tube processing factories, hardware fine polishing workshops, mold maintenance manufacturers, electronic component processing plants and precision mechanical spare parts distributors.

2. Core Competitive Advantages

2.1 Tight Inner Spiral Winding, Zero Dead Zone Precision Cleaning

Brass wire circular brush slices are wound inward tightly along the central sleeve, all wire bristles converge to the central axis with uniform bristle density covering the entire spiral surface. There are no large drainage gaps like outer wound spiral brushes, which makes it perfectly fit tiny inner holes, curved workpieces and narrow mold grooves. During high-speed rotation, dense brass wire uniformly polishes every tiny corner of the workpiece, completely removing fine burrs, surface oxide film, oil stains and tiny rust spots that sparse outer wound brushes cannot clean thoroughly.

2.2 Segmented Circular Brush Slice Lock Structure, Stable Rotation Without Shifting

Each independent circular brass wire brush slice is clamped and fixed by hard plastic retaining rings on both sides, then continuously wound inward into an integrated spiral assembly. The plastic retaining rings have anti-slip inner tooth structure, which tightly holds each brush slice to prevent axial sliding, offset and loose separation under long-term high-speed rotating friction. Compared with single strip wound spiral brushes, this segmented slice structure maintains uniform bristle thickness across the whole roller, avoiding uneven polishing effect caused by partial bristle wear.

2.3 Soft Brass Wire Filament, Anti-Scratch Precision Surface Treatment

We adopt high toughness brass copper wire as standard bristle material for inner wound spiral coil brushes. Compared with rigid steel wire, brass wire has moderate hardness and flexible rebound performance. It can efficiently remove fine rust, oxidation layer and tiny burrs on copper pipes, aluminum tubes, stainless steel precision parts and electroplated workpieces, without scratching or damaging the delicate finished metal surface, perfectly matching high-standard precision polishing requirements of hardware and electronic industries. We also provide stainless steel wire upgrade options for heavy-duty descaling scenarios.

2.4 Split Modular Coil Design, Low-Cost Targeted Replacement

The whole inner wound spiral coil brush is a separate sleeve assembly independent of the drive shaft. When local brass wire slices wear out after long-time precision polishing work, users only need to replace the worn spiral coil sleeve instead of replacing the whole drive shaft roller assembly. The standard hollow inner hole fits most precision equipment drive shafts on the market, enabling tool-free quick disassembly and installation, greatly cutting long-term spare parts procurement costs and shortening production line maintenance downtime.

3. Classified Application Scenarios

Precision Small Tube Internal Polishing

Sleeved on tube processing machine drive shafts, used for inner wall deburring, oxide removal and mirror polishing of thin-walled copper tubes, aluminum alloy tubes, stainless steel capillary tubes; dense inner wound brass wire fully fits tiny tube inner holes to eliminate polishing dead corners.

2. Hardware & Electronic Component Fine Deburring

Remove tiny burrs, electroplating residue and surface rust on miniature stamping parts, connector terminals, watch hardware accessories and precision turning parts; soft brass wire avoids scratching electroplated and polished finished surfaces.

3. Injection & Die-Casting Mold Maintenance Cleaning

Clean tiny residual plastic slag, rust spots and release agent buildup in mold narrow grooves, small cooling holes and complex curved cavities; compact inner wound spiral structure can penetrate deep narrow mold gaps for thorough cleaning.

4. Medical & Food Grade Pipe Inner Wall Descaling

Stainless steel wire inner wound coil brush variant for stainless steel food delivery pipes, medical capillary tubes, removing limescale, protein residue and minor corrosion without leaving metal scratch marks that breed bacteria.

5. Jewelry & Ornament Surface Bright Polishing

Polish silver ornaments, copper jewelry and alloy craft surface oxidation and scratch marks; brass wire provides soft grinding power to restore metal luster without damaging delicate jewelry patterns.

4. Complete Technical Specification Table

Parameter	Standard Stock Options	Custom Supported Range
Spiral Winding Type	Inner Wound Compact Spiral Coil Brush	Custom winding tightness adjustable
Retaining Ring Material	Hard Wear-Resistant Plastic Ring	Nylon reinforced anti-break ring (heavy load upgrade)
Bristle Raw Material	Brass Copper Wire Filament	304 Stainless Steel Wire, Nylon Filament
Standard Outer Diameter of Coil Brush	40mm / 65mm / 90mm	25mm – 130mm customized outer size
Standard Coil Total Length	200mm / 450mm / 700mm	100mm – 1200mm adjustable total length
Inner Sleeve Central Aperture	16mm / 20mm / 25mm	Custom inner hole diameter matching precision equipment drive shaft
Standard Spiral Winding Pitch	8mm / 12mm	5mm – 18mm custom compact pitch
Working Temperature Range	-10℃ ~ 100℃	High temperature resistant wire option for hot mold cleaning

5. Bulk Customization Support for B2B Buyers

Inner Spiral Winding Customization: Adjust inner winding tightness, spiral pitch and bristle density according to workpiece hole size and polishing precision requirements; ultra-compact narrow pitch design for micro-capillary cleaning.
Size Personalization: Customize coil outer diameter, total spiral length, inner sleeve aperture and plastic retaining ring thickness to perfectly match your precision equipment drive shaft installation drawings.
Bristle Customization: Switch between brass wire, stainless steel wire and nylon filament; adjust wire thickness to control polishing fineness, hybrid wire layout available for dual fine polishing & heavy descaling demands.
OEM Branding: Laser engrave private brand logos on plastic retaining rings for precision machinery OEM factories and industrial brush spare parts distributors.
Special Functional Upgrades: Food-grade polished brass wire variant for food pipeline cleaning; anti-static brass wire configuration for electronic dust-free workshop component polishing equipment.

6. Why Choose Our Inner Wound Spiral Coil Brushes?

Factory direct wholesale supply without intermediate dealers, tiered volume discount policies for precision tube processing factories, mold maintenance engineering contractors and electronic component production line manufacturers.
Strict multi-stage pre-shipment quality inspection: wire bristle pull-out resistance test, inner spiral winding tightness aging test, plastic retaining ring impact resistance test, workpiece scratch-free polishing effect test.
Sufficient inventory of mainstream standard inner wound spiral coil brush sizes, fast delivery within 5~7 working days for urgent bulk orders.
Professional engineering technical team: free structural matching scheme guidance after receiving your precision equipment model, drive shaft dimension drawings and workpiece polishing precision requirements.
Global sea & air logistics shipping solutions, complete product material safety test reports and ISO9001 factory qualification documents for overseas precision machinery importers and government industrial equipment tender projects.

7. Frequently Asked Questions

Q1: What is the core difference between inner wound spiral coil brush and outer wound spiral coil brush?

A1: Inner wound spiral coil brush winds circular wire brush slices inward along the inner sleeve, with ultra-dense compact bristle arrangement and no large gaps, specially designed for precision fine polishing, tiny inner hole cleaning and delicate workpiece surface treatment. Outer wound spiral coil brush wraps bristle strips outward with natural large spiral gaps for automatic large metal filings and residue discharge, mainly used for heavy-duty pipe descaling, conveyor anti-clog sweeping and thick rust removal workpieces.

Q2: Will the plastic retaining ring crack or deform during long-time high-speed rotation?

A2: Our plastic retaining ring adopts thickened high-toughness engineering nylon integrated injection molding, with strong compression and impact resistance. Under normal continuous rotating polishing working conditions, no cracking or deformation occurs within 8~12 months of service life. For high-speed heavy-load polishing equipment, we also provide reinforced fiber-filled retaining ring upgrade options.

Q3: Can I customize the inner sleeve aperture size to sleeve onto my existing precision processing equipment drive shaft?

A3: Yes, we fully support customized inner sleeve central hole sizes to match all standard and non-standard precision drive shafts. You only need to provide the diameter parameters of your equipment drive shaft, and our technical team will produce matching inner wound spiral coil brushes, and can provide free small sample coils for polishing effect and size verification before mass production.

Q4: Do you support large tender bulk orders for precision hardware industrial park procurement projects?

A4: We provide exclusive tender preferential pricing, complete ISO factory certification, metal wire material safety test reports and stable mass production delivery schedules for precision tube processing factories, mold maintenance service companies and industrial equipment tender procurement clients. Contact our sales team to get a formal detailed quotation.

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Lianxin Brush Industry

CEO : Alan

Sales Manager: Edith

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