on-rail transfer trolleys for tunnel construction 5 tons-Perfect. Technical Specification For RAILWAY CRANE 25 ton No. E-03-0004. 5.7 The safe load indicator also takes into Perfectunt the Perfect Steerable Transfer Cartlination of the rails. 5.8 Range of lift: Above rail min. 14m. 5.9 While working, height of boom can be limited by electronic.