Brief Introduction   OLH series double girder overhead crane is designed in compliance with FEM manufacture standard, the reasonable structure, high intensity performance and stability features minimize crane deadweight and offer extremely good operation even morden constructed workshop , thanks to the optimized structure make it easy to assemble where is effectively reduce workshop construction costs. This series crane stands in line with the world main stream.   Advantage   1. Low dead weight- FEA technology designed box section, reasonable structure, sound stress requirements via analyzing. 2. High working intensity geared motor to main lifting, lifetime lubricative gear box, overheating protection, sound mechanical performance. 3. Electromagnetic brake along with adjustable brake disc device, extremely low maintenance rate, effective working life which should not less than 1 million times operation. 4.Trinity drive units outfit to C.T & L.T  part, VVVF speed control and closed gear transmission, low  noise. 5. Modular designed electric cabinet, world class  sub-vendor for electrical component supply, anti-phase dislocation, default phase and over current protect. 6. Shorterzing treat hook apply to anti-fray material, effectively protect hook shell rubbing from wire rope, 360° horizontal & 180° vertical rotating, making operation easily. 7. Full sets of limit switches effect while hoisting, C.T and L.T reach to limits, make sure crane each mechanism, each time operation safe.