Mobile Screening Plants

Mobile screening plants are critical in mining, construction, and recycling applications—sorting and separating materials efficiently on site. To keep these machines running smoothly, they rely heavily on robust and reliable hydraulic systems. This guide explains how to choose the right hydraulic motors, pumps, valves, cylinders, coolers, and fittings for optimal performance.

The Role of Hydraulic Systems in Mobile Screening Plants

Hydraulics drive critical operations such as conveyor belt motion, screen deck vibration, chassis positioning, and more. A properly designed system ensures smooth, high-torque performance with low noise and thermal stability. Hydraulic motors and gear pumps provide motion, while heat exchangers manage temperature under continuous load.

Core Hydraulic Components for Screening Operations

• Hydraulic Motors:Available in brake-type and high-torque designs with cast iron housings. Displacement range: 30–200 cm³/rev. Operating pressure up to 300 bar. Speed: 200–400 rpm.

• Hydraulic Pumps: High-pressure gear pumps with alloy steel or aluminum alloy bodies. Light-duty and stable-flow models available.

• Hydraulic Valves: Directional control and multi-way valves offer flexible fluid routing. Used to control multiple screens and conveyors from one system.

• Hydraulic Cylinders: Steel piston-type and pull-rod oil cylinders handle screen deck adjustments and chassis lifting. Bore diameter: 40–250 mm.

• Hydraulic Heat Exchangers: Essential for systems running long hours. Flow range: 150–350 L/min. Electrical models operate at 220V for efficient cooling.

• Hoses and Fittings: Rubber and steel wire-wound hydraulic hoses withstand pressure surges and vibration. Coupled with high-seal steel fittings for leak-proof operation.

Material and Structural Design Considerations

Hydraulic systems in mobile screening plants face extreme vibration, dust, and temperature fluctuations. Components built from cast iron, steel, and aluminum alloys offer corrosion resistance and structural integrity. For example, aluminum alloy pumps reduce overall system weight, while cast iron motors enhance durability in high-load conditions.

Low-noise motor designs are also preferred for urban construction zones and enclosed workspaces.

Key Performance Specifications to Match

• Displacement: 30–200 cm³/rev allows adaptation to screen size and torque needs.

• Max Pressure: Motors rated up to 300 bar; pumps up to 250 bar.

• Speed Range: Hydraulic motors optimized for 200–400 rpm screening speeds.

• Cylinder Bore: 40–250 mm to support heavy-duty screen deck movement.

• Flow Rate for Cooler: 150–350 L/min; Voltage: 220V for electrically powered cooling units.

Choosing parts with the right technical range is essential to avoid system strain, overheating, or mechanical failure.

Hydraulic Use in Mobile Screening Systems

In mobile screening plants, high-torque brake motors manage feeder and conveyor belt movement. Multi-way valves allow operators to divert power between components efficiently. Piston-type hydraulic cylinders lift and level the plant for on-site setup. A reliable hydraulic oil cooler ensures that even under extended runtime, oil temperatures stay within safe operating limits.

Preventing Hydraulic Failures in Screening Plants

• Use low-noise hydraulic motors to reduce wear and overheating

• Apply high-pressure gear pumps made with alloy steel for consistent flow

• Choose wire-wound rubber hoses for high vibration resistance

• Install oil coolers with 220V input to maintain system temperature

Proper material choice and timely component replacement are critical for avoiding leaks, pressure loss, and downtime.

FAQs: Choosing the Right Hydraulic Components

Q1: What is the ideal motor type for mobile screening plants?
Hydraulic brake motors with high torque and cast iron bodies are best suited for heavy loads and continuous operation.

Q2: How to size a hydraulic pump?
Consider flow requirements and match with system pressure. For screening operations, 250 bar high-pressure pumps made of aluminum or alloy steel are preferred.

Q3: How to prevent hydraulic overheating?
Use oil coolers rated at 150–350 L/min and ensure proper ventilation. Electric models (220V) are ideal for mobile use.

Q4: Which hoses should be used?
Select steel wire wound hydraulic oil pipes and rubber hoses designed for vibration resistance and pressure endurance.

Conclusion: Reliable Hydraulics for Mobile Screening Plants

Choosing the right hydraulic components for mobile screening equipment ensures better efficiency, safety, and equipment longevity. From cast iron hydraulic motors to directional control valves and oil cooling systems, every part must be built for the demands of the job site.

Focus on key parameters like displacement, pressure, and temperature regulation. Invest in material quality and structural durability to prevent failure and reduce maintenance.

Looking to upgrade your mobile screening plant's hydraulic system? Reach out to our technical team for product consultation and tailored solutions.