Marzocchi gear pump ALP2A-D-22-FG detailed parameters
1. Model Nomenclature Explanation
The model ALP2A-D-22-FG of Marzocchi gear pump follows the uniform naming rule of Marzocchi’s product series, and each code corresponds to specific product characteristics as follows:
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ALP: Product series, indicating the standard pressure external gear pump, which is widely used in medium and low pressure industrial hydraulic systems due to its stable performance and compact structure.
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2A: Size group, representing the specific structural size category of the pump, which determines the basic installation dimensions and maximum displacement range of the pump.
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D: Installation method, standing for flange mounting, which is a common installation form suitable for most industrial equipment installation scenarios”.
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22: Displacement code, corresponding to the theoretical displacement of the pump (detailed parameters are shown in the following table).
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FG: Special options, where “F” means equipped with a pressure limiting valve, and “G” means mechanical seal, which can effectively ensure the sealing performance of the pump and prevent oil leakage under working pressure.
2. Core Technical Parameters
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Parameter Name
|
Specification/Value
|
Unit
|
Description
|
|---|---|---|---|
|
Theoretical Displacement
|
16.0
|
cm³/rev
|
The volume of oil delivered per revolution of the pump shaft under theoretical conditions, which is the core parameter determining the flow rate.
|
|
Maximum Continuous Working Pressure
|
210
|
bar
|
The maximum pressure that the pump can bear continuously during long-term stable operation without damageituen .
|
|
Maximum Intermittent Pressure
|
225
|
bar
|
The maximum pressure that the pump can bear for a short time (intermittent operation) without affecting its service life.
|
|
Peak Pressure
|
240
|
bar
|
The instantaneous maximum pressure that the pump can withstand in extreme working conditions, which cannot be maintained for a long time.
|
|
Maximum Speed
|
2800
|
rpm
|
The maximum rotational speed of the pump shaft allowed during operation; exceeding this speed will cause excessive wear and reduce service life.
|
|
Working Speed Range
|
500 – 2800
|
rpm
|
The optimal rotational speed range for the pump to operate stably, ensuring efficient oil delivery and low noise.
|
|
Flow Rate at 1500 rpm
|
24.0
|
L/min
|
The actual oil delivery flow rate when the pump shaft rotates at 1500 rpm, which is an important reference for matching the hydraulic system.
|
|
Rotation Direction
|
Clockwise (Right-handed)
|
–
|
Standard rotation direction of the pump shaft, which can be customized according to special needs (subject to factory confirmation).
|
|
Pump Body Material
|
Aluminum Alloy
|
–
|
Lightweight, corrosion-resistant, and suitable for medium and low pressure working environments, reducing the overall weight of the equipment.
|
|
Sealing Type
|
Mechanical Seal (G)
|
–
|
Good sealing performance, strong wear resistance, and suitable for long-term high-pressure operation to prevent oil leakage.
|
|
Pressure Protection
|
Equipped with Pressure Limiting Valve (F)
|
–
|
Automatically relieve pressure when the system pressure exceeds the set value, protecting the pump and the entire hydraulic system from damage.
|
3. Structural and Installation Parameters
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Shaft End Specification: Cone 1:8, with tongue 3.15, terminated with M12x1.25 nut; optional parallel keyed or spline shaft end (subject to model configuration).
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Installation Center Distance: 36.5 mm, ensuring accurate installation and alignment with the driving device.
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Mounting Bolt Spacing: 96 x 71.5 mm, standard flange mounting hole spacing, compatible with most standard mounting brackets.
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Suction/Pressure Port Connection: Flange 40 mm; standard thread specifications include M6 (effective depth 13 mm) and M8 (effective depth 17 mm) for auxiliary connections.
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Weight: Approximately 5.0 kg, lightweight design facilitates installation and equipment layout.
4. Standard Accessories and Configuration
The standard configuration of the ALP2A-D-22-FG gear pump includes the following accessories to ensure normal installation and operation:
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Disc tongue (Part No.: 522057)
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M12x1.5 bolt (Part No.: 523016)
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Split elastic rosette (Part No.: 523005)
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Mechanical seal assembly (matching the “G” option)
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Pressure limiting valve (matching the “F” option)
5. Application and Working Conditions
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Application Fields: Suitable for various industrial mechanical hydraulic systems, including machine tools, agricultural machinery, construction machinery, and other equipment that requires stable medium and low pressure oil supply.
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Working Medium: Hydraulic oil conforming to industrial standards; recommended viscosity range: 10 – 400 cSt.
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Working Temperature Range: -20°C to +80°C; avoid working in extreme high or low temperature environments for a long time to prevent damage to seals and pump components.
6. Notes
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The parameters are for reference only; the specific parameters shall be subject to the official product manual or the actual delivered product.
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During installation, ensure the pump is correctly aligned with the driving device to avoid shaft misalignment, which may cause bearing wear and oil leakage.
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Regularly check the oil quality and replace the hydraulic oil according to the working conditions to extend the service life of the pump.
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Do not exceed the maximum pressure and speed limits during operation to prevent irreversible damage to the pump.
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