Hydraulic systems form the backbone of reliability and efficiency in aggregate production plants. DRG Crusher's engineering team provides in-depth technical analysis of these critical systems.

1. Hydraulic Component Engineering

  • High-Pressure Pumps:

    • 350 bar operating pressure rating

    • Axial piston variable displacement pumps

    • 200-500 l/min flow capacity

  • Hydraulic Cylinders:

    ParameterJaw CrusherCone CrusherImpact Crusher
    Diameter160-200 mm120-150 mm180-220 mm
    Stroke400-600 mm300-450 mm500-800 mm
    Force50-80 ton30-50 ton70-100 ton

2. Circuit Design Principles

  • Flow Control Technology:

    • Proportional valves (±2% accuracy)

    • Flow dividers/combiners

    • 3 micron filtration

  • Pressure Management:

    • Two-stage pressure relief valves

    • Shock absorbers for load damping

    • 500 psi safety margin

3. Performance Optimization

  • Energy Efficiency Metrics:

    • 25-30% savings with variable pumps

    • Accumulator energy recovery

    • 0.8-1.2 liters oil/ton consumption

  • Maintenance Protocols:

    IntervalProceduresEquipment Needed
    DailyOil level checkSight glass
    WeeklyFilter inspectionPressure gauge
    MonthlyOil analysisSpectrometer

4. Case Studies

  • Limestone Crushing Plant:

    • 400 l/min flow rate

    • 280 bar operating pressure

    • Zero hydraulic failures in 3 years

  • Granite Quarry:

    • 500 l/min flow

    • 320 bar peak pressure

    • 98% system efficiency