Grease

[Jimbobla]

Tom-Pac, TP 2598. Cartridges only. Check it out.

[LTB]

ho, I just took that one :

https://www.eevad.com/fr/3658-graisse-alimentaire-tube-95g.html

Max temp seems a little low, but it works better than M li's so far : don't become hard.

[hankua]

Tom-Pac, TP 2598. Cartridges only. Check it out.

This could very well be what comes with the Huky.

[Jimbobla]

It's not completely clear like his is. It is, as far as I can ascertain, the correct product for this application. I am using it, after spending a bit of money on incorrect products, and it does work.

[SusanJoM]

Hey, Jimbobla, are you greasing the front and the back bearings? 
What are you using to get the grease into the bearing holder? 

[Jimbobla]

Reusing Mr Li's syringe. That rear bearing is tough, but while the motor runs I just get it close and then work it in with a toothpick. Not the best method probably, but it does get the job done.

[hankua]

Jim
Where were you able to locate this product in the US?

[Jimbobla]

Tom-Pac.com

[Brent]

I've been looking around on the web for food safe bearing lube.  I have to get some new lube because mine has turned to a very thick gel. I've noticed that most of the higher temp, food grade lubricants seem to be made from one of three things. The Tompac stuff is polyalphaolefin based, then there's PTFE based lubes (IIRC that's teflon) and there's also molybdenum. 

I listed these two (links below) because Loctite products are usually easily available in North America at least. This other one, Superlube is available at Home Dept, so again,  should be available in the US & Canada. (European and Asian countries surely have equivalent products) Both are teflon based. What do you guys n gals think? Safe for our application?
My only concern is that teflon releases unhealthy vapors above 500F I believe it is.    I don't think those bearings get to that temp though, do they? The Superlube does say it's approved for food "incidental food contact" and the others I listed are food grade.
If it's pasty, like a grease, I wonder how easy it would be to squirt into the bearings though. That back bearing is not easy to get at. I assume to really get at it, one would have to take the motor off.

https://www.homedepot.ca/en/home/p.3-oz-tube-synthetic-grease-with-syncolon-ptfe.1000735868.html   

https://www.acklandsgrainger.com/en/product/LCT39341 

I believe this one is molybdenum based. Listing it just as an example

https://www.acklandsgrainger.com/en/product/DOW44MED400GM



 

[SusanJoM]

Would this work?
https://www.amazon.com/Corning-Molykote-Compound-5-3oz-150grams/dp/B002WDU1J8

I've used it to lubricate the piston of a lever machine, but haven't used it on the HUKY.


Edit after reading the next post:  The 111 is only rated to 400 degrees.  . 

[Jimbobla]

https://www.dowcorning.com/content/publishedlit/80-3256.pdf
 This is their selection guide. I didn't see anything meeting my temperature requirements, which I place well over 500 F. So far I am very pleased with the Tom-PAC which is very cost competitive compared to other high heat gels. Theirs was my third product to try, and the other 2 didn't work out. I found out quickly that they wouldn't stand up to the heat and would wash out in short order. Anyone trying other products please post the results. My two wash outs were Super Lube High Temp E.P. Grease and CRC Synthetic Food Grade Grease.

[Brent]

Susan, I just checked the temp rating info for the Molykote 111. It's rated to 450F.   If the bearings are exposed to well over 500F, as Jim says, then it may not work well. I don't know.

I didn't know the bearings get that hot.  The Tompac stuff Jim mentioned is rated to 750F.   Looks like it's a Canadian company.
Jim, it says it comes in 400 gram cartridges (smallest size) Is that the same size as a tube of caulking?  Do you just squeeze a bit into the syringe with a caulking gun, or what?

I have no personal experience with this, but it's what Coffee Tec sells for bearings It's rated to 830F. It's a little cheaper too. (Maybe a search will turn up other places that sell it)  Doesn't say whether it's food grade though.  Is that important?  Do the bearings actually come in contact with the beans, or are their vapors?
http://www.coffeetec.com/Moly_Grease_for_high_temp_uses_p/21-husk-moly%20grease.htm

[Jimbobla]

I use a cheap plastic Cajun Injector without the tip on. I pack it into that and then the end will fit into the syringe to fill. The HTS-2 looks like it might wash out above 500 f. Leaving behind a film. No personal experience though. I doubt those commercial roasters have the temperature range isssues that I personally run into, which is that sometimes I will get excursions when empty above 500 F. Even without those excursions I like that I am operating well below the limits of the gel.

[hankua]

Thanks Jim!

Found this grease available in Taiwan, thus it could be what's supplied OE.

Amazon has curved tip glue syringes, perfect for grease; tip can be snipped off as well. In a pinch one could stop by a local roaster and get the syringe filled up.