... -saving 3)ISO/CE 4)easy to maintain precision hydraulic four-column plane cutting machine Technical Data Model PG-425PG-435PG ... to lubricate it. Characteristics1.Double oil cylinders,the structure of four precise columns and banlanced connecting rod,so the depth of ... ) Stroke fix handle Excellence of Equipment:1. Two-tank, precision four-column structure of the self balance connecting rod which can ...