On May 17, Sany Group's "Digital Intelligence Drive·Smart Future" themed Digital Hydraulic Systems and Components Technology Launch Ceremony grandly commenced at the "4th Changsha International Construction Equipment Exhibition".
The four core technological innovations - digital hydraulic valves, digital hydraulic motors, digital cylinders, and digital controllers - have been successfully applied in over 20 high-end scenarios including cranes, boom pump trucks, excavators, rotary drilling rigs, new energy mining equipment, and high-precision machine tools. Their key performance indicators surpass international counterparts, drawing continuous admiration from attending clients.
At the event, Dr. Zhai Likui, Deputy General Manager and R&D Director of Hytek, unveiled the technological achievements of digital hydraulic valves: featuring OBE-integrated electro-hydraulic pilot stages with multi-bus protocol support, achieving <0.5% position closed-loop control accuracy, <2% flow hysteresis accuracy, and <70ms step response time - fully matching international benchmark product performance. Simultaneously, Hytek exhibited its HA6VM115 digital variable displacement motor and HA2FM28 digital fixed displacement motor on-site.
PC12 Digital Multi-Section Valve
Load-sensing pressure compensation, general-purpose valve
Operating Pressure: ≥40 MPa
Flow Capacity: ≥140 L/min
Bus Control: J1939/CANopen compliant
Hysteresis: ≤2%
Response Time: ≤200 ms
HA6VM Digital Motor
Maximum Speed: 5,600 rpm
Rated Pressure: 40 MPa
Volumetric Efficiency: >95%
Minimum Stable Speed: 25 r/min @ 35 MPa
Start-up Response Time: ≤20 ms
Displacement Closed-loop Control: <2% hysteresis
Integrated Features:Controller、Operational status monitoring、Fault diagnosis
HA2FM Digital Motor
Maximum Speed: 4,500 rpm
Rated Pressure: 40 MPa
Volumetric Efficiency: >95%
Minimum Stable Speed: 50 r/min @ 38.5 MPa
Integrated Features:Controller、Operational status monitoring、Fault diagnosis
