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  • Re: 912ULS gearbox installation bolt torque specs.

    by » 4 months ago


    Loctite 648: Retaining compound which is typically used for holding gears and sprockets onto gearbox shafts and rotors on electric motor shafts. Loctite 680: High strength, methacrylate ester acrylic liquid designed for the bonding of cylindrical fitting parts, particularly where low viscosity is required.

    (Reference in photo)

    LOCTITE® 648 is a green, fluorescent, low viscosity, high strength, urethane methacrylate acrylic, anaerobic retaining compound designed for bonding cylindrical fitting parts. It prevents loosening and leakage from shock and vibration. Typical applications include holding gears and sprockets onto gearbox shafts and rotors on electric motor shafts. It provides robust curing performance.

    • Fluorescent
    • Low viscosity
    • High strength
    • Designed for bonding cylindrical fitting parts
    • Offers high temperature performance and oil tolerance
    • Works on active metals (e.g. mild steel) as well as passive substrates such as stainless steel and plated surfaces
    • Tolerates minor surface contaminations from various oils such as cutting, lubrication, anti-corrosion and protection fluids

    LOCTITE® 680 is a green, high strength, methacrylate ester acrylic liquid designed for the bonding of cylindrical fitting parts, particularly where low viscosity is required. The product prevents loosening and leakage from shock and vibration. It provides robust curing performance. It works on active metals (e.g. mild steel) and on passive substrates (e.g. stainless steel and plated surfaces).

    • Low viscosity
    • Provides robust curing performance
    • Offers high temperature performance and oil tolerance
    • Cures when confined in the absence of air between close fitting metal surfaces
    • Certified to ANSI/NSF Standard 61 for use in commercial and residential potable water systems not exceeding +82 °C
    • Tolerates minor surface contaminations from various oils
    37877_2_648 VS 680.jpg (You do not have access to download this file.)

  • Re: 912ULS gearbox installation bolt torque specs.

    by » 4 months ago


    Fascinating to me that there are soooo many different Loctite formulas. I had no idea.  It doesn’t however answer why someone would use 680 instead of the Rotax recommended 648 for this particular job.


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