Product Overview
The ELI3-D-43.2-T0-A-N is a high-performance helical external gear pump from Italy’s Marzocchi Pompe ELIKA® Series. The ELI3 belongs to the Group 3 range of the ELIKA family, with displacements covering 20.4 to 87.1 cm³/rev. Marzocchi Pompe, headquartered in Bologna, Italy, is a globally recognized manufacturer of high-pressure gear pumps and gear motors.
The ELI3-D-43.2-T0-A-N features a patented helical gear tooth profile that reduces system noise and pulsation by up to 75%, achieving an average noise reduction of 15 dB(A) compared to conventional external gear pumps. With its compact construction, small footprint, and superior performance, this pump is the ideal replacement for traditional screw pumps, vane pumps, and internal gear pumps.
Product Line Note:
The original title provided by the user includes both the ELI3 (gear pump) and ALM1 / ALM2 / ALM3 / ALM1A / ALM2A (gear motor) product lines. This detail page focuses on the ELI3-D-43.2-T0-A-N gear pump as the primary product, with complete ALM series gear motor technical specifications provided as supplementary information at the end.
ELI3-D-43.2-T0-A-N: Marzocchi ELIKA® Group 3 helical gear pump, 43.2 cm³/rev displacement
ALM1 / ALM2 / ALM3 / ALM1A / ALM2A: Marzocchi ALM Series aluminum gear motors
Key Interchangeability Advantage: Our ELI3 series gear pumps are manufactured to strict Marzocchi original design specifications, ensuring 100% direct interchangeability with original units. The ELI3 series pumps are perfectly interchangeable with Marzocchi standard gear pumps in the ALP3 and GHP3 series. All mounting interfaces, flange dimensions, shaft configurations, and port positions are identical to the original product – no modifications required. Every pump undergoes 100% factory performance testing under simulated operating conditions (covering rated pressure, peak pressure, and full speed range performance curves), guaranteeing plug-and-play reliability with zero performance deviation.
Model Code Breakdown (based on Marzocchi ELI3 Series designation rules):
ELI3 = ELIKA® Series Group 3 Helical Gear Pump
D = Body type / design code
43.2 = Nominal displacement: 43.2 cm³/rev
T0 = Shaft type / seal configuration
A = Mounting flange specification
N = Seal material: NBR (Nitrile Butadiene Rubber)
Technical Specifications
ELI3-D-43.2-T0-A-N Gear Pump
Product Series: ELIKA® ELI3 Series Helical External Gear Pump
Brand: Marzocchi Pompe (Italy)
Displacement: 43.2 cm³/rev
Maximum Operating Pressure: 260 bar (up to 280 bar per some sources)
Peak Pressure: Up to 300 bar
Rated Speed: 3500 rpm
Minimum Speed: 200 rpm
Theoretical Flow (@1500 rpm): 64.8 L/min
Direction of Rotation: Right-hand (clockwise) , viewed from shaft end
Shaft Type: Tapered 1:8, key width 4 mm
Mounting Flange: European flange, pilot diameter 50.8 mm, 4-bolt fixing centers 128 × 98.5 mm
Seals: NBR (Nitrile Butadiene Rubber)
Housing Material: High-strength aluminum alloy (Group 3)
Noise Characteristics: Average 15 dB(A) lower than conventional gear pumps
Weight: Approx. 6.4 kg
ALM Series Gear Motors (Supplementary Information)
ALM1, ALM2, ALM3, ALM1A, and ALM2A are Marzocchi ALM Series aluminum gear motors.
ALM1 Series (Group 1)
Displacement Range: 1.4 – 13.8 cm³/rev
Maximum Pressure: 270 bar
Maximum Speed: 5000 rpm
Housing Material: High-strength extruded aluminum
Gear Material: Case-hardened and tempered alloy steel
ALM2 Series (Group 2)
Displacement Range: 4.5 – 40 cm³/rev
Maximum Pressure: 270 bar
Maximum Speed: 4000 rpm
Housing Material: High-strength extruded aluminum
ALM3 Series (Group 3)
Displacement Range: 20 – 87 cm³/rev
Maximum Pressure: 250 bar
Maximum Speed: 3500 rpm
Housing Material: High-strength extruded aluminum
ALM1A / ALM2A
ALM1A and ALM2A are specific configuration variants of the ALM series
Continuous Operating Pressure: Up to 2450 psi (approx. 169 bar)
Peak Pressure: Up to 270 bar
Maximum Speed: 5000 rpm
Key Technical Advantages
1. Patented Helical Gear Design for Ultra-Low Noise and Low Pulsation
The ELI3 Series features Marzocchi’s patented helical gear tooth profile with a unique tooth shape design (eliminating oil trapping), significantly reducing pressure pulsation and system vibration. The ELIKA pump achieves an average noise reduction of 15 dB(A) compared to conventional external gear pumps, with lower frequency and more pleasant sound characteristics.
2. High-Strength Aluminum Housing for Lightweight High Power Density
Manufactured with Group 3 high-strength aluminum housing, delivering substantial weight reduction (only 6.4 kg) while maintaining structural integrity. The ALM series gear motors similarly feature high-strength extruded aluminum bodies with case-hardened and tempered special alloy steel gears, ensuring high mechanical efficiency and wear resistance.
3. Optimized Internal Structure for High Efficiency and Long Service Life
Optimized pump structure minimizes internal leakage, ensuring high efficiency under all operating conditions. The axial compensation system dramatically reduces internal leakage, improving durability and overall efficiency. The ELIKA pump is particularly suitable for low-speed, high-pressure operating conditions.
4. Wide Displacement and Pressure Coverage
The ELI3 Series covers displacements from 20.4 to 87.1 cm³/rev with maximum operating pressures up to 300 bar. The ALM Series gear motors cover displacements from 1.4 to 87 cm³/rev, pressures up to 270 bar, and speeds up to 5000 rpm. The extensive range ensures precise matching to diverse application requirements.
5. Flexible Configuration and Multi-Pump Combination Capability
The ELI3 Series supports single, tandem, and multiple pump combinations. The ALM Series motors offer a variety of flange, shaft, and port configurations with compatibility for special fluids and harsh environments.
Application Areas
Injection Molding Machinery: Hydraulic systems for injection molding and rubber injection machines
Presses and Stamping Equipment: Hydraulic presses, stamping machines
Material Handling Equipment: Forklifts, stackers, telehandlers
Construction Equipment: Mini excavators, loaders
Agricultural Machinery: Combine harvesters, tractors, sprayers
Wind Power: Wind turbine gearbox lubrication and hydraulic systems
Industrial Machine Tools: Machine tool hydraulic transmission and control systems
Marine Engineering: Marine hydraulic systems
Mobile and Industrial Hydraulics: General mobile equipment and industrial hydraulic applications
Expert Maintenance Tips
1. Pre-Installation Checks
ELI3 Series pumps have a fixed rotation direction (this model is right-hand/clockwise) – verify matches system drive direction before installation.
Check shaft type (tapered 1:8, key width 4 mm) precisely matches coupling.
Confirm mounting flange specification (European flange, pilot diameter 50.8 mm, 4-bolt fixing centers 128 × 98.5 mm).
2. First Start-Up & Oil Priming
Prime the pump housing with clean hydraulic oil before first start-up; ensure suction line is fully filled – never run dry.
Special attention should be given to suction line design to avoid turbulence and air ingestion.
Maintain operating temperature within -20°C to +80°C.
3. Filtration & Fluid Cleanliness
Maintain fluid cleanliness at ISO 4406 class 20/18/15 or better.
As operating pressure increases and system complexity grows, filtration requirements should be correspondingly raised.
4. Operating Monitoring
If abnormal noise or pressure fluctuation occurs, first check suction lines for leakage or blockage.
Regularly check torque on pump and piping connection bolts to prevent loosening from vibration.
Maximum operating pressure must not exceed 260 bar (continuous) or 300 bar (peak).
5. ALM Gear Motor Special Considerations
ALM Series gear motors are bidirectional or unidirectional motors – verify rotation direction before installation.
ALM1A / ALM2A are specific configuration variants – confirm the complete model suffix during selection.
