Submerge stepper motors in mineral oil, good safe freeze spray

[Alex Gibson]

Hi all

Pursuing an odd tangent in my chocolate extrusion process, to neatly enclose everything, make it food safe and to reduce noise, I will be submerging steppers in oil.

I have tried this before, it works, but I wonder if there are reliability or lifetime limiting factors to consider?

Weirdly I understand the steppers themselves can cope even with being run under water that has not been demineralised - it's the driver electronics that would suffer. What I am thinking of is that choice of oil could slightly or drastically shorten lifetime of bearings, (or maybe even improve it?)

Any ideas gratefully received.

Finally have been using non food grade freeze spray from Maplin to control setting - Anywhere local I could get food safe freeze spray please?
Mark (Kleinebre) - do you know anyone who might have it? Realistically I'd need to get it tomorrow which further limits choice... Otherwise I know where I can order online...

Cheers

Alex
Tapped on my mobile phone.

[daprigoo]

What do they use to wrap parts of medical robots in operating theaters?

[Ryan .]

Why? What? Food safe? Olive oil?

Are you making it washdown?

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[Jeremy Poulter]

Have you looked at Peristaltic Pump; https://en.m.wikipedia.org/wiki/Peristaltic_pump? This is normally what you would use to move liquids in a food safe fashion.

Jeremy

[Richard Ibbotson]

For a food grade cooling spray, I can only think of CO2, but rather wasteful. Better with a chilled air solution.

On the oil imersion sounds like you need more snake oil.