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  • Ratings Standard Delivery: £4.99
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  • Q 1. What are Osborn Bore Brushes used for?

    A. They are designed for:
    Internal surface finishing
    Deburring, polishing, and honing cylindrical bores or tubes
    Cleaning and preparing surfaces for coating or welding
    Removing rust, scale, or residue from valve seats, bushings, or pipes

  • Q 2. What materials are these brushes made from?

    A. Abrasive nylon filament embedded with SiC (Silicon Carbide) grit
    Grit types: 120 or 180 (depending on aggressiveness required)
    Stainless steel wire shank

  • Q 3. Can I use these brushes with power tools?

    A. Yes, most come with a 3mm–7mm shaft designed for:
    Hand drills
    Flexible shafts
    CNC machining centers (if RPM range is within limit)
     Always check the recommended maximum RPM.

  • Q 4. How do I select the correct bore brush?

    A. Use these selection points:
    Requirement : Brush Feature
    Light polishing : Grit 180
    Aggressive deburring : Grit 120
    Bore size match : Choose a brush with diameter range slightly under the bore ID
    Deep or long bore : Opt for longer bristle and shaft (200mm here)

  • Q 5. Can I use these brushes on plastic or aluminium bores?

    A. Yes, but:
    Use higher grit (180) for soft materials
    Avoid high pressure or RPM that could overheat or gouge surfaces

  • Q 6. What industries commonly use these bore brushes?

    A. Automotive & aerospace workshops
    Hydraulic and pneumatic component maintenance
    Metal fabrication & machining
    Tool and die shops
    Valve and cylinder manufacturers

  • Q 1. What’s the difference between Grit 120 and Grit 180?

    A. Grit 120: Coarser, removes more material faster
    Grit 180: Finer, produces a smoother surface finish

  • Q 2. What does the brush diameter range mean (e.g., Ø24–27mm)?

    A. The brush is optimized for bores or holes within that diameter range. It ensures effective brushing without excessive wear or insufficient contact.

  • Q 3. What’s the recommended speed (RPM)?

    A. Generally, between 600–1,200 RPM is ideal
    Do not exceed 2,500 RPM to prevent overheating or filament damage

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