.MARZOCCHI GHP2-D-16
4 week ago
Product details
1. Product Overview
• Brand Background:
MARZOCCHI is a renowned Italian manufacturer of hydraulic components, specializing in high-precision gear pumps, hydraulic motors, and system solutions. Known for low noise and high volumetric efficiency, its products are widely used in industrial automation, machine tools, and injection molding machines.
• Model Positioning:
TheGHP2-D-16belongs to theexternal gear pumpseries, designed for medium-low pressure hydraulic systems (max. pressure 250 bar). It is suitable for conveying lubricating hydraulic oils, mineral oils, or synthetic fluids.
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2. Core Specifications
【表格】
Parameter GHP2-D-16 Specifications
Displacement 16 cm³/rev
Rated Pressure 210 bar (continuous)
Peak Pressure 250 bar (transient)
Speed Range 500–3000 rpm (recommended 1000–2500 rpm)
Flow Range 8–48 L/min (based on speed)
Viscosity Range 10–400 cSt (recommended 30–100 cSt)
Fluid Temperature -20°C to +80°C (short-term up to +100°C)
Weight Approx. 8.2 kg (with flange and shaft)
Port Type SAE J518C 2B (other standards optional)
Seal Type Dual-lip shaft seal + FKM O-ring (chemical-resistant)
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3. Structure & Working Principle
• Design Features:
• Dual Gear Mesh: The driving gear (connected to the shaft) rotates the driven gear, enabling suction and discharge via gear tooth volume changes.
• Axial Clearance Compensation: Floating side plates automatically adjust for thermal expansion and wear, maintaining high volumetric efficiency (≥92%).
• Low-Noise Design: Optimized gear tooth profile (involute + modification) and housing flow path reduce noise to ≤70 dB(A).
• High-Strength Bearings: Double-row angular contact ball bearings support axial and radial loads, extending service life.
• Operating Logic:
1. The drive shaft rotates the driving gear.
2. The gears disengage, creating a vacuum to draw fluid into the suction port.
3. The gears engage, compressing fluid and discharging it through the outlet port.
4. Output flow is proportional to rotational speed, with a pulsation rate ≤5%.
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4. Typical Applications
• Industrial Hydraulics:
• Mold opening/closing and ejection in injection molding and die-casting machines.
• Tool magazine rotation and fixture clamping in CNC machines.
• Ram drive in bending and shearing machines.
• Mobile Hydraulics:
• Hydraulic steering in agricultural machinery (harvesters, sprayers).
• Auxiliary circuits in construction equipment (mini excavators, loaders).
• Special Fluid Handling:
• Lubrication oil circulation systems (compatibility verification required).
• Low-temperature hydraulic systems (requires low-temp shaft seals).
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5. Common Faults & Diagnostics
【表格】
Symptom Possible Causes Solutions
No Output/Low Flow Air ingestion, gear wear, shaft seal leakage Check suction line seals, replace gears/seals
Pressure Fluctuation Excessive gear clearance, contaminated fluid Adjust side plate clearance, replace filter (≤10μm)
Abnormal Noise Bearing failure, improper gear mesh Replace bearings, recalibrate gear center distance
Overheating Excessive speed, inadequate cooling, mismatched viscosity Reduce speed, add cooler, use proper fluid
Shaft Seal Leakage Aged seals, improper installation, pressure overload Replace seals, verify mounting parallelism, limit pressure
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6. Maintenance & Care
• Daily Checks:
• Monitor oil temperature (normal ≤65°C) and noise levels.
• Inspect suction strainer for clogging (clean monthly).
• Periodic Maintenance:
• Every 500 hours: Check for shaft seal leaks, tighten bolts.
• Every 2000 hours: Replace hydraulic oil (ISO VG46 recommended), clean reservoir.
• Every 5000 hours: Disassemble for gear/bearing inspection; replace if worn.
• Long-Term Storage:
• Drain fluid, apply rust inhibitor, and store vertically.
• Manually rotate shaft 3–5 cycles before reuse to ensure no binding.
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Suppliers
Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
3 year
Main Product:
hydraulic motor,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch ,
hydraulic system
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