Welding hydraulic jack extension screw

[RatsepAndre]

Hi.

I have come up with a solution that requires welding a metal arm to the extension screw of a bottle hydraulic jack. I was wondering what type of steel it is generally made of and if it is possible to weld it. It has to hold strong though.

Thanks in advance

 

[MintJulep]

Probably not going to work out the way you imagine.

Make a nut of known material and attach your arm to that.

 

[Jboggs]

I agree with MintJulep. Welding to the jack screw is in most cases a recipe for failure. I like the idea of fabricating a welded nut and attaching it to the screw.

 

[Ron]

Drill and tap the saddle plate on top of the extension screw. Attach a weldable plate with countersunk screws. Weld the metal arm to that.

 

[racookpe1978]

the extension screw of a hydraulic jack ... rotates to make the final height adjustment before pumping up the hydraulic pressure. I seriously doubt your application - which you have NOT provided any information about!!!! - will tolerate that rotation as the jack goes up and down linearly.

 

[Tmoose]

As others said, not much useful info yet.
Among my questions is, arm out the side (cantilever load, tending to tip over the jack) or an extension of the "extension screw", which to my ear would not be an arm .

 

[ornerynorsk]

I have personally done this, although not recommended, as others have said. It's generally a plain, low carbon steel if it's a china product. US or European products could be heat treated med carbon or alloy steels. You need to take the screw out and remove any o-rings before welding.

All this being said, can you use a vise grip plier, and weld a control rod toit instead? That way, you are only ruining a $10 tool instead of the whole jack.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[Duwe6]

IF you do it: Preheat to about 350°F ['sizzle spit/water'], do not let piece cool off until welding is done; then raise heat to about 600°F and cool inside insulation. Weld with E309 SMAW 'stick' rod.

 

[RatsepAndre]

Lot's of useful feedback here. I appreciate. Also i apologize for not providing enough relative information. For now i have found another solution for my problem though.

Thank You!