Product Overview The Marzocchi GHP3 external gear pump is designed to bridge the gap between standard aluminum pumps and costly heavy-duty piston pumps. By integrating cast iron covers, the GHP3 minimizes body deformation under extreme loads, ensuring the gears maintain precise alignment. This results in maintained volumetric efficiency even at high operating temperatures and pressures.
Technical Advantages:
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Cast Iron Reinforcement: The cast iron flange and cover allow for higher fastening torques and withstand pressure spikes better than all-aluminum pumps.
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Advanced Gear Design: Features a specific 12-tooth gear profile aimed at reducing noise generation and hydraulic pulsation.
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Efficiency: High volumetric and mechanical efficiency due to the pressure-compensated bushing blocks.
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Flexibility: Compatible with a wide range of standard flanges (SAE B, SAE A, European) and shafts (Splined, Tapered, Parallel).
Ideal For:
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Heavy Construction Equipment
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Mining Machinery
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High-Pressure Power Packs
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Forestry Machines
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Waste Management Vehicles
| Specification | Value / Description |
| Product Type | High Pressure Hydraulic Gear Pump |
| Frame Size | Group 3 (GHP3) |
| Displacement Range | 20.0 – 87.0 cm³/rev |
| Max. Continuous Pressure ($P_1$) | 280 bar (Models ≤ 40cc) / 200 bar (Model 135) |
| Max. Peak Pressure ($P_3$) | Up to 320 bar |
| Max. Speed | 3500 rpm (Small displacement) to 2000 rpm (Large displacement) |
| Sealing System | Standard NBR, Optional Viton (V) for high temp |
| Inlet/Outlet | Flanged ports or Threaded ports (BSP/SAE) |
| Mounting | 4-Bolt European, SAE A, SAE B |
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