Crawler Conveyor

Crawler conveyors are essential components in modern construction machinery, particularly in transporting heavy loads across uneven terrain. Their performance heavily depends on the quality and compatibility of hydraulic systems. In this guide, we’ll help you select the right hydraulic motor, hydraulic pump, and hydraulic fittings and hoses to maximize efficiency, durability, and cost-effectiveness.

Understanding Hydraulic Systems in Crawler Conveyors

Hydraulic systems in crawler conveyors enable consistent, high-force movement across varying ground conditions. They rely on precise, pressure-driven control to manage track movement, conveyor belt operation, and lifting components. The use of high-quality orbital hydraulic motors and gear pumps ensures that even under extreme loads, the machine operates smoothly and efficiently.

Core Hydraulic Components and Their Functions

• Hydraulic Motor: Orbital or cast iron designs are ideal for torque-heavy operations. Displacement ranges from 36–381 cm³/rev and rated pressure ranges from 9 to 17.5 MPa. Motor weights range from 6.5 to 9.5 kg depending on size and casing materials.

• Hydraulic Pump: Gear-type hydraulic pumps made from alloy steel and copper alloy parts provide stable flow and durability. Pressure ratings typically reach 250 bar.

• Hydraulic Fittings and Hoses: Robust rubber hoses and leak-proof fittings made from steel and copper alloys are vital for resisting vibration and ensuring reliable fluid transfer.

Material and Construction Considerations

The harsh environments crawler conveyors operate in require components that can withstand wear, impact, and pressure. Cast iron is preferred for hydraulic motors due to its toughness, while steel and alloy fittings offer excellent anti-corrosive properties. Choose oil-free bearing hydraulic pumps for reduced maintenance and increased lifespan.

Evaluating Key Technical Specifications

• Displacement: Motors with 36–381 cm³/rev are suitable for low to high torque demands.

• Rated Pressure: Motors operate efficiently within 9–17.5 MPa, while pumps can handle up to 250 bar.

• Weight: Lightweight models (6.5–9.5 kg) help reduce machine load and improve mobility.

Matching these parameters with system requirements ensures energy efficiency, reduced wear, and extended service life.

Use Case: Hydraulic Systems in Crawler Conveyors

In a typical crawler conveyor, hydraulic motors provide rotational drive for the tracks and belts, while high-pressure gear pumps maintain fluid circulation. Orbital motors, known for their compact design and high starting torque, are ideal for maintaining traction. Fittings and hoses must be vibration-resistant to handle dynamic motion and prevent leaks in construction zones.

Common Issues and Solutions in Hydraulic Conveyor Systems

Operators often face problems such as:

• Overheating pumps due to excessive pressure buildup

• Seal failure from abrasive particles or high pressure

• Hose cracking or leakage due to vibration and poor material choice

Solution:

• Use oil-free bearing high-pressure pumps for thermal stability

• Choose alloy steel hydraulic fittings for superior sealing and vibration resistance

• Schedule routine maintenance and use contamination-resistant hoses and filters

FAQs: How to Choose a Hydraulic Pump for Excavator or Conveyor?

Q1: How do I select a hydraulic pump for a crawler conveyor?
Choose a gear-type pump rated up to 250 bar. Look for stable flow, compatibility with orbital motors, and corrosion-resistant materials like alloy steel.

Q2: What motor displacement is ideal for crawler conveyors?
Depending on load, select between 36–381 cm³/rev. Higher displacement offers more torque for rugged conditions.

Q3: What hoses and fittings are best?
Use steel or copper alloy fittings with high-pressure rubber hoses. Ensure fittings are compatible with pump pressure and fluid type.

Conclusion: Choosing the Right Hydraulic System for Crawler Conveyors

Hydraulic components are the driving force behind reliable and efficient crawler conveyor systems. From robust hydraulic motors and high-pressure pumps to vibration-resistant fittings and hoses, every element must align with system requirements and environmental challenges.

For optimal results, select materials like cast iron, steel, and copper alloys. Match technical specs—pressure, displacement, and weight—to your application's operational demands. Regular maintenance and high-quality parts reduce breakdowns and extend the machine’s operational life.

Need help choosing hydraulic parts for your crawler conveyors? Contact our experts for tailored recommendations and product support.