This may sound like it's out there but let me explain, what temperature is considered "safe" for maximum oil extraction? There are many different types of professional oil extractors on the market, generally what temperature range do they work at?

The reason I ask is I've done a hot water soak and also the ball in dry sweep methods before with solid results and I want to take that to the next level. I have a Sous Vide immersion cooker that can be set to an exact temperature in whole degrees, (it works amazing for reheating a perfectly rare piece of left over prime rib by the way.) It wasn't too expensive and the food never actually contacts the water so there isn't a risk of contamination or anything, plus if it works this will become my oil extractor and I'll buy the top shelf one for cooking (the first one was mostly a trial purchase.)

I know it sounds off the wall but my cheapness knows no bounds! Thanks in advance for any input.

What is the risk though? The Jayhawk extractor uses heated water to extract oil so how exactly is this different? I think in many specialty hobbies we tell ourselves the only way to achieve something is by buying a specialty product from a retailer in our exact hobby.

I spent over 10 years in the reefing hobby, if you think bowling is expensive or exclusive you have no idea what you are talking about. In that hobby many of us figured out hacks so to speak to not only make the hobby cheaper but also better for those involved. I am simply looking to do the same in this new hobby of mine.

risk is you make it to hot and ruin your ball
my only point

Right, that is the whole point of my OP, what is considered the "safe temp." I want to replicate the Jayhawk system without the ultra-sonic portion which I'm not sure is anything other than marketing.

Used a food dehydrator to make mine and have zero issues.

The document from Brunswick that use to be available on innovatives website recommend not exceeding 150 degrees. It also stated most dont warranty for exceeding 125 degrees.

I'd stick with 100-125.  I Typically do 125, and it has no issue getting oil out of the ball.

I have a NuBall extractor and use 135*, does the job without damaging the ball.  --  JohnP

As far as I have learned, the main danger from heat (besides cracking the ball) is that at around 150 degrees Fahrenheit, the plasticizer, which, I believe, is the catalyst that makes urethane into resin, starts to come out of the ball.

Different manufacturers specify different heat limits. You can check on the ball box and see this for Brunswick and Storm as part of the warranty. I believe Storm specifies 125 degrees, and Brunswick specifies 140 degrees. (That could be reversed; check a box.)

I have a NuBall oven and it has a range of 105 to 155. I know the manufacturer/designer and he and his team check every oven to insure that the temp specified on the device is within 2 - 3 degrees.

I have a NuBall extractor and use 135*, does the job without damaging the ball.  --  JohnP

The NuBall unit's temperature gauge goes up to 145 degrees but shows 135 degrees in red letters.

Motiv's standard warranty suggests not exposing their bowling balls to a temperature beyond 125 degrees which may be a bit conservative. I use 125 degrees for the Sting, but like John, I go to 135 degrees for non-Motiv balls without any damage.

I have a NuBall extractor and use 135*, does the job without damaging the ball.  --  JohnP

I use a DIY copy of the NuBall extractor that I made (my cost about $75) with a digital thermometer inserted to constantly monitor the temperature. I typically de-oil at 130* and it works extremely well.  Have never had any problems running at that temperature.