Precision Surface Finishing: The Essential Guide to Honing Brushes
In high-precision engineering, the quality of an internal bore can determine the lifespan of a machine. Whether it’s an engine cylinder or a hydraulic valve, achieving a perfect surface finish is critical. This is where the Honing Brush (also known as a flexible cylinder hone or ball brush) becomes an essential tool in your manufacturing arsenal.
At Shanghai Longguang Industrial Brush, we specialize in providing high-performance honing solutions that ensure cross-hatched surface patterns and burr-free bores.
What is a Honing Brush?
A Honing Brush is a resilient, flexible finishing tool featuring abrasive globules (balls) bonded to the ends of flexible nylon filaments. Unlike rigid honing stones, the flexible nature of a honing brush allows it to:
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Self-center: Automatically aligns with the bore axis.
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Self-compensate: Applies even pressure across irregular or slightly out-of-round surfaces.
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Create a Cross-Hatch Pattern: Ideal for oil retention in cylinders.
Top Industrial Applications
1. Automotive Engine Reconditioning
Honing brushes are the industry standard for deglazing cylinder walls. By creating a fine cross-hatch finish, they allow piston rings to seat properly and ensure optimal lubrication, extending engine life.
2. Hydraulic and Pneumatic Cylinders
For hydraulic systems, internal burrs can damage seals and lead to leaks. Our honing brushes remove micro-burrs from ports and intersections, ensuring smooth piston movement.
3. Aerospace Precision Parts
In aerospace, where tolerances are exceptionally tight, honing brushes provide a controlled way to improve surface roughness (Ra) without altering the base material's dimensions.
4. General Pipe and Tube Cleaning
From removing rust to smoothing out interior weld seams, these brushes are versatile tools for maintenance and repair across various industries.
Technical Specifications: SC 120# Series
Choosing the correct diameter is vital. We recommend choosing a brush slightly larger than your bore diameter (approximately 10% larger) to provide the necessary tension.
Below are the specifications for our Standard SC 120# (Silicon Carbide) series:
| Part Number | Brush Dia (A) mm | Working Length (B) mm | Shaft Dia (C) mm | Total Length (D) mm |
| QS1240004 | 4 | 40 | 1.8 | 200 |
| QS1250006 | 6 | 50 | 2.2 | 200 |
| QS1250010 | 10 | 50 | 3.3 | 200 |
| QS1250020 | 20 | 60 | 4.1 | 200 |
| QS1270030 | 30 | 70 | 5.2 | 200 |
| QS1270040 | 40 | 70 | 6.0 | 200 |
| QS1270060 | 60 | 70 | 6.5 | 200 |
| QS1280080 | 80 | 80 | 8.0 | 300 |
| QS1280105 | 105 | 80 | 8.0 | 300 |
Note: Custom sizes and different grit levels (e.g., AO Aluminum Oxide) are available upon request.
Why Choose LG Honing Brushes?
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Uniform Finish: Our bonding process ensures that abrasive balls stay attached even under high-speed rotation, providing a consistent finish across thousands of parts.
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Flexible Stem Design: The twisted wire stem provides the perfect balance of rigidity for power and flexibility for contour following.
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Efficiency: Can be used with handheld drills, drill presses, or CNC machines, making them easy to integrate into existing workflows.
Conclusion
A high-quality Honing Brush is more than just a cleaning tool—it is a precision instrument for surface refinement. By choosing Shanghai Longguang, you gain access to decades of expertise in industrial brush manufacturing.
Optimize your internal finishing today. Explore our Honing Brush Collection or contact us for professional technical support.