The biggest feature of a claw jack is that it can use the lower side support to lift heavy objects on the chassis, which traditional jacks cannot achieve. However, the support load of a claw jack has a requirement, which is that it must be half of the rated load of the jack, otherwise it will bring safety hazards. Why is this?

Regarding the issue of the attachment load of claw jacks, it is necessary to consider one of its stress modes. During the attachment lifting process, the entire hydraulic system is subjected to enormous pressure, as well as mechanical stress under the lever structure. This stress state is much greater than the load at the vertical load-bearing point. If it bears the same load as the top support, the attachment will face the risk of fracture. Therefore, the rated load of claw jacks is strictly regulated to be much lower than the load of the entire jack.

That's why the maximum load of the attached jack must be half of that of the top jack. If you want to learn more about claw jacks, you can always follow the official website of Guanhang.