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Introduction of HBT Series Small Concrete Pumps 1. Overall hydraulic commutation system: the alternative commutation actions between pumping and S tube distribution doesn& acute;t involve electric signals. Little impact and noise occurs during the commutation,Website:http://www.dowinmachinery.com, so the service lives of the hydraulic pump and valves are evidently lengthened;2. Overall hydraulic system saves the intermediate process of the electric signals. In this way, the reliability of the whole equipment is greatly increased;3. Centralized valve plate: the hydraulic valves of main system are centralized in one valve plate. The number of cross-connected pipelines is reduced, the system gets more compact, at the same time the oil leaking possibility is decreased. Technical data of HBT Series Small Concrete PumpsItemS valve concrete pumpHBT40S-13-45HBT50S-13-55HBT50S-13-56Theoretic concrete delivery volume(m3/h)405050Theoretical concrete delivery pressure(Mpa)131313Hydraulic pressure(Mpa)31.531.531.5Electric motor speed(r/min)148014801480Main oil pumpJapanese KawasakiMain cylinder dia./pole dia*stroke(mm)125/80*1200125/80*1200125/80*1200Diameter of delivery cylinder(mm)200200200Electric motor power(kw)455556Capacity of hydraulic oil tank(L)300300300Hopper capacity(kg)600600600Overall weight(kg)350039004000Maximum pumping distanceVertical(m)180180180Horizontal(m)700700700