35Mpa Tandem Hydraulic Pumps Large Self-Propelled Flat Transporter HPV70-70

Product Description

Highland Grass mower machines double hydraulic pumps easy to maintain

Highland Double hydraulic pumps basic information: 

Highland hydraulic could produce double hydraulic pumps, three throw pump and quadruple pump.

Highland Double hydraulic pumps consist of two single pumps mounted on a common drive shaft. Hydraulically, the two pumps operate independently of one another. The larger pump of the combination is situated at the shaft end (the drive side). With equal frame sizes, the pump with the larger displacement is situated at the drive side.

Highland double hydraulic pumps main features:

1. Variable displacement axial piston pump.

2. Maximize performance, efficiency.

3. Rated working pressure of 35MPa.

4. Working pressure reach 42Mpa at transient. 

5. Wide range of displacements from 30-130cc/r

6. Fast control response.

7. Low noise.

8. Long lifespan.

9. Easy to install.

10. Easy to maintain. 

Hydraulic usage of Highland tandem hydraulic pumps:

Highland tandem hydraulic pump is generally used in hydraulic transmission system, especially widely used in high-power hydraulic transmission system, such as construction machinery, agricultural machinery equipment, coal mining industry, oil exploration, aerospace industry and shipbuilding industry.

Highland company service: 

Quality service

One to one service, can provide design and installation solutions;

Online service for quick response and consultation;

Solve difficult after-sales problems;

Lightning supply

Regular single product supply for immediate delivery, batch can be quickly shipped according to customer demand;

Commitment to warranty hydraulic pump and hydraulic motor within one year;

Provide personalized and customized services according to customer needs;

Hydraulic oil notice of Highland tandem hydraulic pumps:

The service life of Highland tandem pump is related to the usual maintenance, the quantity and quality of the hydraulic oil, and the cleanliness of the oil. It is also an effective way to prolong the life of the piston pump to avoid the wear and tear of the friction pair of the piston pump caused by the particles in the oil. The higher the cleanliness of the hydraulic oil, the longer the service life of the hydraulic pump.

Factory Performance Testing

Closed-loop performance testing of the HPV70-MA-R-21 is documented in the supplied factory test record.

The supplied report lists the component as HPV70-MA-R-21, rated 70 mL/rev, and dates the test to September 14, 2026 at 26.8°C.

The test data includes speed, pressure, flow, displacement, torque, input and output power, overall efficiency and volumetric efficiency, covering pressures between roughly 5 MPa and 30.6 MPa.

Recorded Test Data

Extracted from the supplied closed-loop hydraulic pump test report for HPV70-MA-R-21, the performance values are shown below.

Test Conditions

• Test Date: September 14, 2026
• Test Temperature: 26.8°C
• Rated Displacement: 70 mL/rev
• Rated Pressure: 35 MPa
• Maximum Pressure: 42 MPa
• Charge Pressure: 1.6 MPa
• Charge Flow: 21.9 L/min

The data above reflects the documented factory test conditions; actual operating results may vary with hydraulic circuit configuration, fluid conditions, temperature and application conditions.

Engineering Drawing

HPV70 Engineering Drawing & Technical Documentation

Dimensional integration and hydraulic configuration for the HPV70-MA-R-21 are addressed in the available engineering documentation.

From the supplied engineering drawing, the control handle, maximum and zero displacement positions, hydraulic ports, leakage ports, oil suction port and pressure test point are identified, along with the shaft spline and control-handle information required for mechanical integration.

Engineering Information Covered

• Overall mounting and dimensional information
• Control handle geometry
• Maximum displacement position
• Zero displacement position
• High-pressure ports A and B
• Leakage ports L1 and L2
• Oil suction port S
• Pressure test port M
• Servo cylinder pressure test point
• Input shaft spline configuration
• Control-handle spline information
• Pump rotation direction
• Control configuration information

This drawing also sets out the MA, EP and HS control configurations for the HPV series and identifies clockwise and counterclockwise rotation configurations.

Engineering Integration

Prior to system integration, the selected displacement, control method, rotation direction, shaft configuration and hydraulic port arrangement should be verified against the applicable engineering drawing and the application requirements.

Project Reference

Documented Project Reference — Kyrgyzstan Cotton Harvester

The supplied project documentation covers the HPV70-MA-R-21 in a variable piston pump project for Kyrgyzstan.

Project Details

The documented project specification describes the HPV70 hydraulic pump with a maximum displacement of 70 mL/rev, a rated working pressure of 35 MPa, a continuous working pressure of 30 MPa and a transient maximum working pressure of 42 MPa.

This project reference serves as documented application information from the supplied project materials.

Technical Documents

HPV70-MA-R-21 Technical Documents

Technical documentation is provided to support product evaluation, hydraulic system integration and model selection.

Available Technical Information

• HPV70-MA-R-21 Technical Parameters
  Product operating parameters including displacement, speed, pressure, torque, power, temperature and weight.
• HPV70/90 Engineering Drawing
  Dimensional and configuration information covering mounting dimensions, hydraulic ports, leakage ports, shaft configuration, control handle and rotation direction.
• HPV70-MA-R-21 Factory Test Report
  Documented closed-loop performance test data including speed, pressure, flow, displacement, torque, input power, output power, overall efficiency and volumetric efficiency.
• HPV Series Technical Parameter Sheet
  Series-level technical information covering displacement classes, operating speed, pressure, torque, power, temperature and model configuration.

Technical Information Request

For OEM and hydraulic system integration projects, technical information can be reviewed according to the required displacement, operating pressure, speed, control method, rotation direction and mounting configuration.

FAQ of Highland hydraulic tandem pumps: 

Q1: Could I have a sample order?

A: Yes, we welcome sample order to test and check quality.

Q2: How do you ship the goods and how long does it take to arrive?

A: Ship by air express, it takes 3-5 days to arrive. Airline and sea shipping also optional.

Q3: Do you offer guarantee for the products?

A: Each motor or pump should be tested before shipping, test report can be sent if requested.

Warranty 12 months after shipment for complete assembly.

Q4: What are the payment terms?

A: Full order: 30% as deposit, balance before shipment. Small order/sample order: Full advance payment.

Q5: Are you manufacturer?

A: We are a manufacturer with own plant and 20 years experiences, manufacturing agricultural hydraulic pumps motors.

Tags: tandem hydraulic pumps, double hydraulic pumps, three throw pump