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Author Topic: Aluminum Jacks  (Read 2605 times)
Lin
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« on: December 04, 2014, 03:34:22 PM »

I was at a friends house and noticed some large bottle jacks he said he no longer used.  When I went to lift one to check it out, it was really relatively light weight and appeared to be made of aluminum.  He said they were air jacks rated at 20 ton.  Does anyone have experience with something similar?
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eagle19952
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« Reply #1 on: December 04, 2014, 03:44:51 PM »

Those are horrible little beasts....I'll take them out of circulation just to be a nice guy.... Grin Angry Grin
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Donald PH
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brmax
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« Reply #2 on: December 04, 2014, 04:02:04 PM »

eagle I would hate for you to have to lug them both let me help, just trying to help a fella out.
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« Reply #3 on: December 04, 2014, 04:10:01 PM »

I have 2 -30 ton but they are not air over hydraulic mine need a hydraulic supply one of my super buys I thought were air operated hydraulic jacks  Angry but they are easy to move around 
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Lin
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« Reply #4 on: December 07, 2014, 03:55:29 PM »

These are pictures of one of the jacks.  The name is worn off, so I haven't been able to find anything online about them.  He says they are hydraulic/air and rated at 20 tons, but I suspect they are pneumatic since I can't find any port for fluid.  Also, the pistons are hollow, so I question whether they are really good for 20 ton.  When hooked up, the two of them can be operated simultaneously be one foot pedal for up and down.  Any clues?



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eagle19952
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« Reply #5 on: December 07, 2014, 08:53:12 PM »

not what I was thinking.... Angry
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Donald PH
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Lee Bradley
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« Reply #6 on: December 07, 2014, 09:09:58 PM »

I have a set of those that came with an alignment machine. They are air operated and mine have a valve for each jack.  Great for quick lifts setting up the alignment equipment and they are easy to handle in the pit; about 8 or 10 pounds.
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Lin
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« Reply #7 on: December 07, 2014, 09:24:59 PM »

Lee, that makes perfect sense since they are a pair and were both controlled with one foot peddle.  Do you know who the manufacturer is and what the lift rating is.  I don't think they are near the 20 tons he thinks they are.
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digesterman
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« Reply #8 on: December 08, 2014, 06:06:24 AM »

Those are not 20 ton jacks if only air, no way, do the math on available air pressure and cylinder size


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Lee
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luvrbus
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« Reply #9 on: December 08, 2014, 06:27:42 AM »

Aren't those the old 4,000#(2000#ea) jacks from a Hunter alignment machine from the 60's before they went to the swing out jacks ? I remember using those if you didn't pin those they leaked off big time and you had to start over  
« Last Edit: December 08, 2014, 06:35:03 AM by luvrbus » Logged

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Lin
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« Reply #10 on: December 08, 2014, 08:46:19 AM »

That could be it.  I have no knowledge of the Hunter alignment system, but these have to be pinned to stay up.  I guess there is no free lunch here; you don't get a 20 ton jack that only weighs 10 pounds.
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Jim Eh.
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« Reply #11 on: December 08, 2014, 09:35:43 AM »

No "jack" is really safe (air or hydraulic). The load should always be supported with a stand or mechanical lock/pin.
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Jim Eh.
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