DAIKIN variable piston pump V50SA2BRX-20, V70C22RHX-60 parameters and applications
DAIKIN variable piston pump V50SA2BRX-20 and V70C22RHX-60 parameter and application analysis
- Comparison of core parameters
Parameter V50SA2BRX-20 V70C22RHX-60
Displacement is about 50 cm3/rev (typical value), about 70 cm3/rev (typical value)
Rated pressure 280 bar (peak 350 bar) 280 bar (peak 350 bar)
Volumetric efficiency ≥95% ≥95%
Control method Pressure compensation control (identification “A”) composite control (identification “C”, flow and pressure synergy)
Structural characteristics Swash plate axial plunger design, spherical oil distribution structure single-stage swash plate design, cast iron pump body impact resistance
Noise level full pressure range ≤65 dB (A) Full pressure range ≤65 dB(A)
The power loss of oil temperature control is small, the oil temperature rise is reduced by 30%, the power loss is small, and the oil temperature rise is reduced by 30%
The direction of rotation supports two-way reversible clockwise rotation (identification “R”)
Applicable flow range, medium and small flow (about 50 cm3/rev), medium and large flow (about 70 cm3/rev) - Detailed technical characteristics
V50SA2BRX-20
Pressure compensation control: automatically matches the load requirements, reduces reactive power loss, and has significant energy-saving effect. It is suitable for constant pressure scenarios (such as injection molding machine mold closing unit).
Modular design: the replacement cycle of the filter element is up to 2000 hours, which is convenient for maintenance and reduces downtime costs.
Compact structure: support customization of the direction of the oil port (such as the “X” logo on the side of the oil port), and adapt to equipment with limited space.
V70C22RHX-60
Composite control: The flow rate and pressure are adjusted in concert, the response speed is fast, and it adapts to dynamic load changes (such as the composite action of construction machinery).
Strong impact resistance: cast iron pump body and key components of wear-resistant materials, suitable for high vibration environments (such as ship deck machinery).
Long-life design: the life of key components is extended to 12,000 hours (such as ceramic plunger assembly) to reduce the frequency of replacement. - Typical application scenarios
V50SA2BRX-20
Precision manufacturing: hydraulic system of CNC machine tools (high-precision feed), automated production line fixtures (reduce positioning errors).
Plastic molding: mold closing unit of injection molding machine (to reduce burrs), wall thickness control of blow molding machine (constant pressure oil supply).
Energy-saving scenarios: energy-consumption optimization projects for hydraulic systems (such as the transformation of energy-saving hydraulic stations).
V70C22RHX-60
Construction machinery: excavator hydraulic drive (composite action coordination), crane luffing mechanism (large flow oil supply).
Ship system: steering gear hydraulic station (corrosion resistance design), anchor drive device (high pressure control).
Metallurgical equipment: hydraulic system of high-pressure rolling mill (dynamic load response), vibration of crystallizer of continuous caster (flow adjustment). - Selection decision-making recommendations
Priority is given to V50SA2BRX-20 scenes
The application is mainly based on energy saving and constant pressure requirements (such as injection molding machines and precision machine tools).
Equipment with limited space or the direction of the oil port needs to be customized.
Scenarios with limited budgets and high requirements for maintenance convenience.
Priority is given to the scene of V70C22RHX-60
It needs to deal with high-pressure shocks and changeable loads (such as excavator hydraulic systems and ship power).
Dynamic load changes frequently (such as the need for coordination of composite actions).
High vibration or corrosive environments (such as metallurgical equipment, marine platforms).
Maintenance requirements：
The viscosity of the oil must be maintained at 10-400mm2/s, and the cleanliness level reaches ISO 4406 18/16/13.
When installing, the flow rate of the oil suction port should be <1.2m/s to avoid the efficiency degradation caused by the phenomenon of cavitation.
