When you need to preserve a gearbox, what is your best solution for rust protection? How do you remove rust that is already there? With our rust protection products, you can tackle the challenges in a simple and effective way.
Rust removal - the hard way...
Before preservation, it is important to remove all internal rust so that corrosion does not continue to worsen during the downtime. Dismantling the gearbox for better access to each part would be too time-consuming and labour-intensive. The good thing is that you don't have to do that.
...and the easy way!
Instead, you can fill the gearbox with a solution of VpCI®-422, a bio-based rust inhibitor, and alternately soak and rotate the gears. Once the rust is removed, the VpCI-422 can be drained and replaced with VpCI®-414 for neutralisation and protection against flash rust. Preservation can then continue with any of the following options:
Gearbox preservation - the hard way...
One method of preserving a gearbox is to fill it to the brim with oil, in the hope that it will create a barrier against oxidation. Unfortunately, this method can be both expensive and generate an excessive amount of hazardous waste. In addition, the top part of the gearbox (where condensation is most likely to occur) is left unprotected.
...and the easy way!
A better option is to add a smaller amount of M-531 or M-535 HV (for ashless systems) in the gearbox oil. The additives contain vapour-phase corrosion inhibitors that protect metal surfaces both above and below the liquid level, eliminating the need to fill the entire gearbox with oil.
Save resources, preserve the gearbox effectively
Gearboxes can be more difficult to restore and preserve than other industrial equipment, but this method makes the job much easier. Please contact our product manager Mats Gunnemyr if you need help or advice on gearbox preservation.
