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Marzocchi Gear pump
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Description
Marzocchi Gear Pumps: Models and Specifications
Marzocchi, an Italian brand, offers a comprehensive range of gear pumps with diverse models and specifications to suit industrial, mobile, and specialized hydraulic applications. Below are the main product series, their models, key parameters, and features.
1. GHP Series (High-Pressure Gear Pumps)
Key Features
High pressure resistance, high efficiency, long service life, and optimized gear tooth profile for reduced pulsation and noise. Suitable for construction machinery, industrial hydraulic systems, and agricultural machinery.
Specifications & Models
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar)
|
Speed Range (rpm)
|
Shaft Seal Type
|
Mounting Type
|
Efficiency
|
|---|---|---|---|---|---|---|
|
GHP1A-D-20
|
20
|
250
|
500-3600
|
G (Mechanical Seal)
|
Flange (Type D)
|
92%
|
|
GHP2A-D-40
|
40
|
250
|
500-3600
|
G/L/M
|
Flange (Type D)
|
92%
|
|
GHP3A-D-63
|
63
|
250
|
500-3000
|
G
|
Flange (Type D)
|
91%
|
Upgrade Features: The 2nd generation (2A) optimizes gear tooth profile to reduce pulsation and noise. G-type mechanical seal resists temperature up to 120℃ with a service life exceeding 5000 hours. Magnetic seal (M-type) is optional for zero leakage.
2. GPM Series (Medium-Low Pressure Gear Pumps)
Key Features
Low noise, cost-effectiveness, and compact design. Ideal for lubrication systems, machine tools, and small hydraulic stations.
Specifications & Models
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar)
|
Speed Range (rpm)
|
Shaft Seal Type
|
Mounting Type
|
Efficiency
|
|---|---|---|---|---|---|---|
|
GPM1A-F-10
|
10
|
160
|
800-4000
|
L (Lip Seal)
|
Side Plate (Type F)
|
88%
|
|
GPM2A-F-25
|
25
|
160
|
800-3500
|
L
|
Side Plate (Type F)
|
89%
|
Advantages: L-type lip seal is cost-effective for low-pressure environments. Compact design reduces weight by 30% compared to GHP series. Noise level ≤65 dB(A), suitable for noise-sensitive occasions.
3. GHP-H Series (Ultra-High Pressure Gear Pumps)
Key Features
Ultra-high pressure capacity and high reliability. Applied in injection molding machines, stamping machines, and hydraulic test benches.
Specifications & Models
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar)
|
Speed Range (rpm)
|
Shaft Seal Type
|
Mounting Type
|
Efficiency
|
|---|---|---|---|---|---|---|
|
GHP-H1-D-20
|
20
|
350
|
500-3000
|
G
|
Flange (Type D)
|
90%
|
|
GHP-H2-D-40
|
40
|
350
|
500-2500
|
G
|
Flange (Type D)
|
91%
|
Technical Highlights: Axial clearance compensation technology reduces internal leakage under high pressure. The housing is made of high-strength ductile iron (GGG40), improving impact resistance by 50%. Equipped with a pressure balance valve as standard to prevent overload.
4. GPM-E Series (Energy-Saving Gear Pumps)
Key Features
Low energy consumption and low heat generation. Suitable for energy-saving hydraulic systems and environmental protection equipment.
Specifications & Models
|
Model
|
Displacement (cm³/rev)
|
Max Pressure (bar)
|
Speed Range (rpm)
|
Shaft Seal Type
|
Mounting Type
|
Efficiency
|
|---|---|---|---|---|---|---|
|
GPM-E1-F-16
|
16
|
200
|
800-3500
|
L
|
Side Plate (Type F)
|
90%
|
|
GPM-E2-F-32
|
32
|
200
|
800-3000
|
L
|
Side Plate (Type F)
|
91%
|
Energy-Saving Design: Optimized gear tooth profile increases volumetric efficiency by 5%. Lightweight design reduces starting torque. Compatible with biodegradable hydraulic oil (HEES).
5. ALP Series (Aluminum Gear Pumps)
Key Features
Lightweight aluminum construction, multiple configurations, and wide applicability in both industrial and mobile sectors. Divided into ALP1, ALP2, ALP3, and ALP4 groups for different flow and pressure needs.
Specifications & Models
|
Group
|
Models
|
Displacement Range (cm³/rev)
|
Max Pressure (bar)
|
Max Speed (rpm)
|
Shaft & Flange Features
|
|---|---|---|---|---|---|
|
ALP1
|
ALP1A, ALP1AF, ALP1AQ, ALP1AQN
|
4.5-35.2
|
250
|
4000
|
Rectangular flange; tapered, cylindrical or splined shaft
|
|
ALP2
|
ALP2-D, ALP2-EP, ALP2A-D, ALP2A-MU
|
1.4-13.8
|
250
|
4000
|
Rectangular flange; tapered, cylindrical or splined shaft
|
|
ALP3
|
ALP3, ALP3-FG-KA, ALP3A-FA-KA
|
20-87
|
230
|
3500
|
Rectangular flange; tapered or cylindrical shaft
|
|
ALP4
|
ALP4, ALP4A, ALP4E
|
87-200
|
240
|
2800
|
SAE C flange; cylindrical or splined shaft
|
6. Small-Size Series (0.25-0.5 & 1P)
0.25-0.5 Series (Micro Gear Pumps)
Displacement: 0.19-1.5 cm³/rev; Max continuous pressure: 190-230 bar; Max intermittent pressure: 210-250 bar; Max speed: up to 7000 rpm. Suitable for micro-hydraulic systems.
1P Series
Displacement: 1.4-13.8 cm³/rev; Max continuous pressure: 270 bar; Max intermittent pressure: 290 bar; Max speed: up to 6000 rpm. Common models include 1PD1.6, 1PD2, 1PD5, 1PD3.3GAS, etc.
Selection Recommendations
-
Pressure Requirement: ≤160 bar → GPM Series; 160-250 bar → GHP/ALP Series; ≥250 bar → GHP-H Series.
-
Installation Space: Limited space → GPM Series (side plate mounting); Standard flange requirement → GHP Series.
-
Special Needs: Zero leakage → GHP Series (M-type seal); Energy saving → GPM-E Series; Micro flow → 0.25-0.5 Series.
Additional information
| Material |
Wood |
|---|---|
| Height |
79.5 cm |
| Length |
46.5 cm |
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