Working Principle

• Gear pumps utilize meshing gears to generate hydraulic flow and transfer power.

• The gears, typically spur gears or helical gears, are housed within a tightly fitted casing or housing.

• As the gears rotate, fluid is drawn into the pump's inlet side, carried around the gears' meshing teeth, and expelled through the pump's outlet.

Key Features and

Design Variations

• Gear pumps are compact, lightweight, and known for their simplicity and reliability.

• They can handle a wide range of viscosities, from thin oils to more viscous fluids.

• Gear pumps are available in various design variations, including external gear pumps and internal gear pumps.

• External gear pumps consist of two external gears meshing together, while internal gear pumps use an external gear and an internal gear.

• External gear pumps offer higher efficiency, while internal gear pumps provide smoother and more precise flow.

Advantages of

Gear Pumps

• High volumetric efficiency: Gear pumps deliver a consistent flow rate with high volumetric efficiency, ensuring reliable performance.

• Compact and lightweight: Gear pumps offer a compact design, making them suitable for applications with limited space and weight restrictions.

• Reliability: With fewer moving parts, gear pumps provide reliable operation and minimal maintenance requirements.

• Cost-effective: Gear pumps are generally cost-effective compared to other types of hydraulic pumps, making them a popular choice in various industries.

Common Applications

Gear pumps are used in numerous industries, including:

• Automotive: Power steering systems, automatic transmissions, and engine lubrication.

• Industrial: Machine tools, hydraulic presses, injection molding machines, and conveyor systems.

• Construction: Excavators, loaders, cranes, and material handling equipment.

• Agriculture: Tractors, combine harvesters, irrigation systems, and forestry machinery.