Main technical characteristic of hydraulic excavator 1250-7

○ Cummins diesel engine ， water cooled, direct injection, turbo-charged and after cooled, Electric control, it satisfies the emission requirement of Europe standard, grade Ⅱ - Ⅲ
○ Control of constant power of single pump, limited power of three pumps for reasonable distribution of electromotor power
○ Starting with zero displacement so as to reduce the moment of resistance at starting
○ Technique with pressure cut to protect hydraulic system and reduce the system heat
○ Secondary overloading for swing and normal closed brake for swing and travel ensure smoothly brake
○ Integrated oil& water cooler with compact conformation
○ The working attachment realized automatic level crowding with bucket to increase the bucket filling factor
○ Attachment designed by CAD, case shape and casting-welding structure realizing the high strength
○ Automatic central lubrication two pumps of system by control of micro-electronics to save daily lubrication
○ Better reliability with Parker hose &seals and Busak+Shamban cylinder seals
○ The Technique with disassembled undercarriage which is advanced to transport the machine quickly
○ Nitrogen dash control is the exclusive technology in domestic with a long cushion stroke and excellent shock absorbing capacity
○ LCD displayer, electronic monitoring & alarm, trouble record system
○ Cab with fixed elevation and integrated is provided with large tri-dimensional ventilation, fresh air circulation, large capacity air condition without fluorine
○ The operator’s cab with the wide vision field and the streamlined appearance, matching the decoration and function with human nature, and offering the working environment in a car.


Main Technology Data of Hydraulic Excavator 1250-7