The Ultimate Guide to Steel Wire End Brushes: Applications, Benefits, and Specifications
In the world of industrial surface preparation, precision and power are paramount. Whether you are working in automotive manufacturing, aerospace, or heavy metal fabrication, the Steel Wire End Brush is an indispensable tool. These compact yet aggressive brushes are designed to reach where others cannot, providing a clean, burr-free finish on complex parts.
In this guide, we will explore why the Steel Wire End Brush from Shanghai Longguang Industrial Brush is the preferred choice for professionals and provide a detailed look at its technical specifications.
What is a Steel Wire End Brush?
A steel wire end brush, often referred to as a "pen brush," features a high-density bundle of wire filaments secured in a metal cup with a shank. Unlike wheel brushes that clean from the side, end brushes are designed to work on their tips. This makes them ideal for:
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Cleaning the bottoms of blind holes.
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Polishing recessed areas or inner corners.
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Removing slag and carbon buildup from valves and cylinders.
Key Application Scenarios
1. Automotive and Engine Maintenance
In automotive manufacturing, these brushes are used to clean carbon deposits from cylinder heads and valves. Their small diameter allows them to enter tight spaces without damaging the surrounding metal.
2. Weld Preparation and Cleaning
Before welding, surfaces must be free of rust and scale. After welding, the end brush is perfect for removing slag and discoloration from the weld bead, especially in T-joints or corners.
3. Precision Deburring
After CNC machining, many metal parts have small "burrs" or sharp edges. Using a 0.15mm or 0.22mm wire end brush ensures these edges are smoothed without altering the part's overall dimensions.
4. Mold and Die Polishing
Industrial molds often require deep cleaning to remove residue from the casting process. The concentrated action of an end brush ensures every crevice is reached.
Technical Specifications & Data
Choosing the right brush requires understanding dimensions and wire types. Below is the standard series data for our 0.22mm Copper Plated Steel Wire End Brushes.
| Part Number | Diameter (A) mm | Trim Length (B) mm | Shaft Diameter (C) mm | Shaft Length (D) mm | Total Length (E) mm |
| BT222010 | 10 | 20 | 6 | 18 | 58 |
| BT222512 | 12 | 25 | 6 | 21 | 66.5 |
| BT222514 | 14 | 25 | 6 | 17 | 67 |
| BT222516 | 16 | 25 | 6 | 23 | 75 |
| BT222518 | 18 | 25 | 6 | 23 | 71 |
| BT223020 | 20 | 30 | 6 | 22 | 75 |
| BT223025 | 25 | 30 | 6 | 20 | 77 |
| BT223029 | 29 | 30 | 6 | 18 | 78 |
Material Customization Options
Depending on your specific environment (e.g., wet vs. dry, stainless vs. carbon steel), we offer various filament types:
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Copper-Plated Steel Wire: Provides high tensile strength and rust resistance.
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Stainless Steel Wire: Ideal for preventing "after-rust" on stainless steel workpieces.
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Multi-strand Twisted Wire: For heavy-duty, ultra-aggressive material removal.
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Wire Diameters: Standard options include 0.15mm, 0.22mm, and 0.3mm.
Why Choose Shanghai Longguang?
At Shanghai Longguang Industrial Brush, we combine over 3,000 product varieties with precision engineering. Our steel wire end brushes are built for:
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High-Speed Durability: Designed to withstand high RPMs without filament loss.
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Customization: We can adjust the trim length, shaft size, and wire density to meet your specific industrial needs.
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Global Quality: Manufactured in Shanghai and exported worldwide, our products meet the rigorous standards of the automotive and hydraulic industries.
Conclusion
The right Steel Wire End Brush can significantly reduce labor time and improve the quality of your surface finishing. Whether you need a standard 10mm brush for light cleaning or a customized 29mm brush for heavy deburring, we have the solution.
Ready to optimize your production line? View our full Steel Wire End Brush collection here or contact our technical team for a custom quote.

