HGP-2A Gear Pump

3 month ago

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4 year

Product details

1. Basic Overview

The HGP-2A is a high-pressure fixed-displacement hydraulic gear pump, a classic horizontal model widely used in construction machinery and compact hydraulic power packs. Featuring a compact footprint and cost-efficient performance, it is commonly paired with various hydraulic power units mentioned earlier, delivering steady pressurized oil for clamping jigs, lifting platforms, mini excavators, loaders and similar equipment.

2. Core Structural Components

1. Pump Housing: High-strength cast iron body with strong deformation resistance for long continuous operation

2. Meshing Gear Pair: High-precision spur/helical gears for low operating noise and stable volumetric efficiency

3. Shaft Seal End Cover: Oil-resistant skeleton oil seal plus wear-resistant bushing to minimize leakage

4. Oil Ports: Standard threaded openings for broad installation compatibility

3. Key Performance Parameters (General Industrial Specs)

Parameter Standard Range Remarks

Rated Working Pressure 16–21MPa Max peak pressure up to 25MPa for short-term use

Displacement Range 2–16mL/r Multiple grades for flexible flow matching

Applicable Rotation Speed 500–3000r/min Matches standard three-phase asynchronous motors

Mounting Type Horizontal flange mounting Fits directly on top of small hydraulic tank lids

Compatible Fluid ISO-standard anti-wear hydraulic oil Recommended operating oil temperature: -10℃~80℃

4. Working Principle

The motor drives the driving gear to rotate and turn the driven gear synchronously. The expanding volume of the suction chamber creates negative pressure to draw hydraulic oil from the tank; oil travels through gear tooth gaps to the pressure chamber, where shrinking volume compresses oil for high-pressure output. A matched relief valve caps the maximum system pressure.

5. Core Advantages

1. Simple, robust structure with few failure points; maintenance limited to seal and filter replacement

2. Compact size ideal for small HGP-series hydraulic power units

3. Vibration-resistant cast iron housing suited for factory and outdoor working conditions

4. Highly interchangeable spare parts, affordable domestic replacement options with ample stock

6. Typical Application Scenarios

Small hydraulic power stations, lifting platforms, machine tool clamping fixtures, forklifts & stackers, agricultural machinery hydraulic circuits, sanitation equipment hydraulic actuators

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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4 year

Main Product: hydraulic motor, gear box , hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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