... of multi-purpose oil hydraulic presse: four column oil hydraulic presse single step,four column oil hydraulic presse teo positons, upright ... five-ton, ten-ton and so on. 2 .This machine be used to presse the rotor axis, the motorcover bearing ... procedures. 3 .This machine uses both hands to start, electro-optical protection, stable property, simplicity of operator security. oil hydraulic machine