33.3ml/R Variable Displacement Piston Pump For Wet Spraying Machine

Product Description

Highland Wet spraying machine hydraulic piston pumps connect additional pumps

Highland Hydraulic piston pumps product description:

Hydraulic piston pumps features:

• Series 20 axial piston variable displacement pumps are well engineered and easy to handle.
• Bearings of variable axial piston pumps are all tapered roller bearing, which can load heavy external axial forces.
• Hydraulic pumps can be connected with other additional pumps.
• When hydraulic pumps operated mechanically, the Servo displacement can control and keep the angle of swash plate and pump displacement.
• Upon release of the control handle, swash plate return to zero position automatically and the flow reduces to zero.

Hydraulic piston pumps technical specification:

Hydraulic pumps advantages and usage:

Because the piston pump has high pressure, compact structure, high efficiency and convenient flow adjustment, it can be used in systems that require high pressure, large flow, and high power and in occasions where the flow needs to be adjusted, such as agricultural machinery, construction machinery, mining and metallurgical machinery, and shipbuilding industry etc other wide range of applications.

Customers should determine the following requirements before ordering:

1. Hydraulic pump and motor displacements.

2. Rotation direction of hydraulic pump.

3. Hydraulic shaft type and shaft teeth quantity.

4. Control mode.

5. Usage of hydraulic pump motor.

6. Send label or pictures as more as possible

Tags: hydraulic piston pumps, 20 series hydraulic pumps, HPV30 hydraulic pumps

Application / Project Evidence

Concrete Mixer Truck Variable Piston Pump Project

For a concrete mixer truck application in Saudi Arabia, the HPV30-MA-R-21 is documented within a hydraulic pump project.

Project details:

• Project — Variable Piston Pump for Saudi Arabia
• Manufacturer — Shandong Highland Hydraulic Seiko Co., Ltd.
• Pump model — HPV30-MA-R-21
• Quantity — 20 units
• Application — Concrete Mixer Trucks
• Hydraulic circuit — Closed Circuit Hydraulic System
• Maximum displacement — 30 mL/rev
• Rated working pressure — 35 MPa
• Maximum transient pressure — 42 MPa
• Continuous working pressure — 30 MPa
• Maximum continuous working speed — 3500 r/min

The project documentation is backed by product technical parameters, engineering drawings and a factory performance test report for the HPV30-MA-R-21.

This project reference illustrates the documented application of the HPV30 series in concrete mixer truck equipment, giving customers application-specific technical evidence when evaluating the pump for similar hydraulic systems.

Factory Performance Testing

A factory performance test is carried out on the HPV30-MA-R-21 closed-loop axial piston pump prior to shipment, checking its main operating behaviour under controlled conditions.

This unit was tested on September 17, 2025 at 27.3°C; its rated displacement was 30 mL/rev, rated pressure 35 MPa and maximum pressure 42 MPa.

Measurements recorded during the test comprised pump speed, outlet pressure, flow, displacement, input torque, input power, output power, overall and volumetric efficiency. The report identifies the model as HPV30-MA-R-21 and includes a unique component number for traceability.

Such testing supplies product-specific operating data to application engineers and customers, beyond nominal catalogue specifications alone.

Recorded Test Data

The results captured during factory performance testing of the HPV30-MA-R-21 pump are shown below.

Conditions of the test:

• Test temperature — 27.3°C
• Rated displacement — 30 mL/rev
• Rated pressure — 35 MPa
• Max pressure — 42 MPa
• Max speed — 3500 r/min
• Charge pressure — 1.4 MPa
• Charge flow — 9.8 L/min

Source: HPV30-MA-R-21 factory test report, component No. 02509170203007.

Engineering Drawing

Dimensioned engineering drawings are provided for the HPV30-MA-R-21 closed-loop axial piston pump.

These drawings give the dimensional and interface data needed for system integration — overall mounting dimensions, shaft and spline specifications, hydraulic ports, leakage ports, pressure test ports, control-handle dimensions and control positions.

Rotation direction and the matching pressure-port arrangement for clockwise and counterclockwise operation are also shown.

The main interface data are:

• Model: HPV30-MA-R-21
• Rated displacement: 30 mL/rev
• Main pressure ports: A and B
• Leakage ports: L1 and L2
• Suction port: S
• Pressure/test port: M
• Control: Manual / Electric Proportional Servo / Hydraulic Servo
• Shaft spline options per selected model
• SAE-related control and shaft dimensions

Hydraulic system designers can use the drawings to confirm mounting, shaft connection, port arrangement and installation requirements before placing an order.

Quality Control & Inspection

Before shipment, quality control of the HPV30-MA-R-21 covers product configuration, dimensional requirements and hydraulic performance.

The factory test record for the tested unit states the manufacturer, component model, component number, rated displacement, rated pressure, maximum pressure and test temperature; performance inspection covers operating speed, pressure, flow, displacement, input torque, input power, output power, overall efficiency and volumetric efficiency.

Dimensional and interface information for the pump body, hydraulic ports, leakage ports, shaft spline and control mechanism is provided in the engineering documentation.

Together, the configuration records, engineering documentation and recorded performance data give traceable technical evidence for the hydraulic pump supplied.

Technical Documents

Technical documentation is available to support product evaluation, hydraulic system design and installation planning for the HPV30-MA-R-21.

Available technical information includes:

• HPV30-MA-R-21 Technical Parameters
• Factory Performance Test Report
• Engineering Drawing
• Mounting and Overall Dimensions
• Hydraulic Port Configuration
• Input Shaft and Spline Specifications
• Control Handle and Servo Control Information
• Rotation Direction Configuration
• HPV Series Technical Parameter Table
• Model Selection Information

The HPV30-MA-R-21 technical documentation specifies a maximum displacement of 30 mL/rev, rated working pressure of 35 MPa, maximum transient working pressure of 42 MPa, continuous working pressure of 30 MPa and a minimum continuous operating speed of 500 r/min.

For engineering evaluation, customers can request the applicable technical documents and product-specific test information from Highland.

Engineering Team

Highland provides engineering support for hydraulic pump selection, configuration and system integration.

For the HPV series, engineering support can cover displacement selection, pressure and speed requirements, control configuration, rotation direction, shaft and mounting interfaces, hydraulic port configuration and application-specific requirements.

For the HPV30-MA-R-21, the available engineering documentation defines the pump displacement, operating pressure, speed range, torque and power characteristics, control options, shaft spline information, port configuration and installation dimensions.

Customers can provide their machine operating conditions and hydraulic system requirements to receive technical guidance on the appropriate HPV series configuration.