... long time bearing polyurethane materials buffer, Crane traveling limit switch, Voltage lower protection function, Emergency stop system, current ... about 100 micronsTechnical Data Lifting capacity (T)1,2,3,5,10T16,20TSpan(M)7.5-22.5MCrane travelling ... cage typeTaper Squirrel-cage typeWork dutyA3-A5Power supply380V 50HZ three phaseWheel diameter270mm370mmWidth of trail37-70mm37-70mm Indoor single girder ...