Thread: High Lift jack

Is the advertised 4000kg the SWL/WLL or the Guaranteed Breaking Strain GBS, they usually have shear pins designed to shear instead of breaking the gears/cogs whatever and have it fall on you. If the seller can not tell/show you or the product is not stamped with SWL or WLL leave it and go to a Rigging supplier (Blackwoods etc.) and buy a properly Rated SWL kangaroo jack, regards Frank.

I sent an email to the seller asking for info as in my other post, here is their reply so far:
From: Frank stanton [mailto:Frank.Stanton@bigpond.com]
Sent: Monday, 13 August 2012 2:45 AM
To: Service Department
Subject: 4 Ton rated Hi lift Farm Jack 60"


Can you tell me , as you state that this jack described above is Rated at 4 ton (8960lbs.) whether this rating is the Safe Working Load (SWL)/ Working Load Limit (WLL) or is it the Guaranteed Breaking Strain (GBS).

If it is the GBS then I doubt that this Jack has been rated under Australian Standards where the only rating would be the universally accepted SWL or WLL which for safety reasons would be 1/5 of the GBS.

Which is if you advertised as 4 ton the SWL/WWL would be 1792LBS.

Or are you advocating that the user of your jacks should use them to 4 Ton maximum load and that that load is the SWL?WLL, can you please clear this matter up.

If 4 ton is the GBS (destruction point) why would you encourage persons to use your product to destruction, Shackles and other rigging gear are Rated by the Government to protect the end user yet you advise the user to use this item to it’s maximum level with no Safety Factor, Regards Frank.

Hi, Frank,

Thank you very much for your kindly email with technical advice.
We listed all information which was from manufactory.
I will forward your email to the engineer of factory to double check this specification.


Best Regards

John

"Yes, this jack meat Australia standards. Cheers - drsellaus"


I make typos but still not re-assued by this response

My struggling T-max has a compliance plate on the side. Would have trouble trusting it if meet was meat on it as well.

I'm trying to understand whats wrong with your curent jack.
Is it not able to lift your rig or are you strugling to use it?
(They arn't the easiest of tools to use, particularly for winching,don't ask).
I would hate to see you spend good money to end up in the same situation.
I thought I saw a hydraulic high lift advertised somewhere, might be worth lookig into aswell.

Cheers, Kyle.

Hi Kyle
The current jack is strugling or my entire weight is "almost" not enough to lift the last inch or two to get the wheel of the ground. A little more leverage might help or more weight (more beer but swimbo disagrees )
I think/hope a longer and higher capacity hi-lift jack might make it a little easier. Another post on Hi-lifts suggest that a 60 inch is needed off road and given I am very close to the top of the existing 40 inch when on flat ground, I want the extra lenght as well as insurance. Not wanting to or planning to winch with the high lift if I can avoid it.

I have one of those cheap 4wdAction magazine versions of the 48 inch 1050kg hi-lift and I weigh 75kgs. It lifts any one corner of my defender quite easily and I don't have to put a lot of effort into it. I do have to use both hands but that's also part of trying to be safe about the whole process. I do worry that the bottom shear pin looks inadequate though and I've also read that you should never, ever use a pole to slide over the handle to increase your leverage; dangerous move.
I assume by the nature of your query that yours is a relatively new jack in good condition. A safer alternative might be a bottle jack.

I have a genuine Hi-Lift,it is probably 20 yrs old by now,but I still have the original booklet that came with it.It is SWL is 2113.74Kg and the Tested GBS is 3175.14Kg.
It also says that the Handle force required to raise 2113.74Kg is 177lbs at the 34" handle.
What needs to be taken into account,is that you won't be lifting that weight when you are lifting either a corner or side of the vehicle,so applied force required will be reduced as well.
Oh,and I would be steering clear of that 4000Kg thing as well.Looking at it,it isn't as solid as my genuine Hi-Lift

177lbs =80.45kg near the end of the handle; sounds a lot doesn't it but then again that' s basically lifting the whole car off the ground, so if you're only lifting one corner it should be a doddle.