HPL HPLP HPG Series Multiple HPGPA336D21G7G6B00 HPGPA336D21G7G6B00 Aluminium Gear Pumps and Motors

1. Technical parameters:
Displacement: According to the characteristics of the HPG series, the displacement of this pump may be around 36cm³/rev.
Operating pressure: The maximum operating pressure can reach 300bar.
Outlet pressure: The maximum outlet pressure is 5bar.
Fluid viscosity: The short-term minimum viscosity is 10mm²/s, and the maximum viscosity is 1000mm²/s.
Fluid temperature: The fluid temperature must not exceed 80°C.
Gear type: Helical gear.
Pump body material: The pump body is made of aluminum, and the components are made of cast iron.2. Working Principle:
The HPGPA336D21G7G6B00 gear pump belongs to the category of external gear pumps. Inside the pump housing, there is a helical gear meshing externally. The front and rear end faces of the gear are sealed by end covers, forming multiple sealed working chambers between the pump housing, end covers and the grooves of each gear tooth. When the driving gear drives the driven gear to rotate, the teeth on the suction chamber side gradually disengage from meshing, the volume of the sealed working chamber increases, the pressure drops, and the oil is sucked from the oil tank and fills the tooth grooves. As the gears rotate, the oil is carried to the oil pressure chamber. The teeth on the side of the oil pressure chamber gradually engage, the volume of the sealed working chamber decreases, the oil is squeezed out, and the pressure rises, thus achieving the oil suction and oil pressure processes.

3. Product Features and Advantages:
Low noise: Equipped with helical teeth and undergoing special surface treatment, it can significantly reduce oil flow and hydraulic pulsation, resulting in low operating noise. It is suitable for applications with noise requirements.
Modular design: The aluminum and cast iron components adopt a modular design, allowing multiple components of different units, series and displacements to be combined into multi-stage pumps. Various accessories suitable for other series can also be installed, facilitating configuration based on actual needs.
Versatility: Aluminum or cast iron flanges can be selected. It can be combined with belt drive or equipped with external brackets. Pressure and directional control valves can also be provided to meet the needs of various working conditions.

4. Usage functions and purposes:
As a power component of the hydraulic system, it converts mechanical energy into hydraulic energy, provides pressure oil for the hydraulic system, and drives the operation of hydraulic actuating components such as hydraulic cylinders and hydraulic motors. It is mainly used in hydraulic systems in the industrial field, such as the hydraulic transmission of machine tools, presses and other equipment, and can also be used in the hydraulic systems of some mobile equipment with lower noise requirements.

5. Applicable machines and scenarios:
It is applicable to all kinds of mechanical equipment that require hydraulic power and have certain noise requirements, such as precision machine tools, textile machinery, packaging machinery, etc. It is widely applied in industrial production workshops, automated production lines and other scenarios.

6. Similar models:
Other models in the HPG series, such as the HPGPA2 series and HPGPA4 series pumps, have similar working principles and structures, but they differ in parameters such as displacement and pressure.

7. Precautions for Use
Before starting: Ensure that the pump and motor are not stuck or rotate inflexibly, that all components are firmly connected, and that the amount of lubricating oil (grease) is appropriate. Install an oil filter with a filtration accuracy of 80-100μm on the suction pipe and an oil filter with a filtration accuracy of no less than 25μm on the return pipe. Regularly clean or replace them. Before starting, oil and air should be injected to prevent the pump from running dry.
During operation: Do not close the discharge valve to avoid damaging the pump or pipeline, or even burning out the motor. Keep track of the pump’s operation at all times by methods such as “listening to the sound, checking the instruments and feeling the temperature”, and ensure that all parts are well lubricated. The continuous working temperature of the pump shall not exceed 80℃, and the instantaneous working temperature shall not exceed 120℃.
Maintenance: Regularly inspect gears, bearings, seals and other components for wear and aging, and replace them in a timely manner. When conducting maintenance or replacing parts, the machine must be shut down, power cut off, and safety measures taken.