Thank you for the reply. Will check out the link.
Yes the part with the T bar handle. Its kind of like a bench vice screw https://www.benchcrafted.com/classic But with a flange bearing and a sleeve over the screw. What made me think it was shop bought is the finish to the inside cover where it goes through the plate it just looks too well made.
I was wondering if you could get just the mechanical part of an electric linear actuator. I would think its maybe made in China (close / easy to source if you live in Russia)
The rating is over 300kg pulling force (winding it in) or at least thats what the crane scale goes up to.
The nearest thing I have found so far is a screw jack for Cement Mixer Chute Hoist Jack. But its nowhere near as refined.