Power Hammer build video (29:07) by SteelCraft
This was my first big project, and first video of this type, so don't be mad about music
Ram weight: 80Lb,
Dies are made out of 50x50x100 [mm] C45 (1045) steel, quenched in water,
Motor: 3 phasic (380V) 1410 rpm, 1,5kW (2hp)
I put whole machine on wooden base and 22 [mm] thick rubber mat because of thin floor in my workshop. After 2 years of using, nothing bad happened.
In build video you can clearly see shaking of hammer, I simply put to much counterweight, after reduction, runs smoothly.
The only change I want to make is to mount a stronger spring.