Air operated oil gun

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Poloris
Posts: 6
Joined: Fri Jul 09, 2021 8:17 am

Air operated oil gun

Post by Poloris »

I have just finished modifying a air operated grease gun to lubricate my new to me late 70s Ruhla mill.
The mill has a combination of grease style nipples and large zerk nipples.
My trusty Reilang oiler, which I use for my lathe was not suitable for any of these.
So I started with a quality grease gun and modified it.
I replaced the fill nipple with a Schrader valve but retained the vacuum breaker then I added a 8mm pick up hose with a inline non-return valve.
The barrel of the gun was plugged and sealed with silver solder.
Air pressure between 40 and 90 PSI is the guns recommended working pressure. I was sure I didn't need 6000 psi of oil pressure, so I added a requlator to reduce the inlet air pressure to 40 PSI.
I'm not sure its necessary but a few pumps from my bike pump through the sharader valve pressurizes the gun and its primed in no time, the non-return valve makes sure it stays primed.
Amazon has some zerk accessory kits, NPT fittings not the BSP fitting we use in Australia, but they completed the gun.
I cut a short lenght of 5mm/ 3/16 fuel hose and fitted it over a needle grease outlet, it works fine for the zerk fittings
Yes it was expensive, but its fun to use.
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87932
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87932
Attachments
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87934
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87934
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87930
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87930
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87931
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87931
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87929
https://www.chaski.org/homemachinist/download/file.php?mode=view&id=87929
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Bill Shields
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Joined: Fri Dec 21, 2007 4:57 am
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Re: Air operated oil gun

Post by Bill Shields »

The never ending joys of east German machinery
Too many things going on to bother listing them.
armscor 1
Posts: 311
Joined: Sun Jun 12, 2016 3:12 am
Location: Philippines

Re: Air operated oil gun

Post by armscor 1 »

G'Day Mate, nice job.
Aussie living in Philippines.
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