Joint Harvester Hydraulic Axial Piston Pump Generic Components

Product Description

Highland Joint Harvester Hydraulic Axial Piston Pump Generic Components

Highland Axial piston pumps introduction: 

Highland Axial piston pumps can contain most of the necessary circuit controls intrinsically by controlling the swash-plate angle, to regulate flow and pressure. They are very reliable and can connect the rest of the hydraulic system.

Highland Axial piston pumps main features:

1. Maximize performance, efficiency, and profit

2. Suitable for your applications: axial piston pumps can be used in overall hydraulic systems.

3. High efficiency: Operating at maximized efficiency, axial piston pumps will help lower your total costs.

4. Optimized design: Compactness appearance make operating your machine as simple as possible, still providing best quality at highest standards.

5. Clean and flexibility: The lightweight, compact design.

6. Precise control and reliable quality and performance

7. Wide range of displacements: Offering a range of pumps with 30-130 cm² per round.

8. High pressure capability: Working with 420 bar transient pressure.

Highland Axial piston pumps technical specification:

Factory Production & Inspection Evidence

The LPV50-MA-R-21 closed axial piston pump is built by Shandong Highland Hydraulic Seiko Co., Ltd., and factory records identify the produced units. The supplied project record lists a production quantity of 50 units, and the factory test report identifies the tested unit by Component No. 02608030203008.

• LPV – LPV series closed axial piston pump
• 50 – 50 mL/r displacement
• MA – manual servo control
• R – clockwise rotation
• 21 – 21-tooth input shaft (16/32 pitch)

Evidence type: factory production / product identification.

Factory Performance Testing

The LPV50-MA-R-21 is evaluated on the factory closed-loop hydraulic pump test bench. The test documentation records Component No. 02608030203008, a test on 2026/8/3 at 10:59, a test temperature of 40.5 °C and a power recovery ratio of 20%. Rated displacement is 50 mL/rev and rated pressure is 35 MPa; the test-bench main parameters are a maximum speed of 3800 r/min and a maximum pressure of 42 MPa.

Recorded Test Data

For the LPV50-MA-R-21, the closed-loop report logs speed, pressure, flow, displacement, torque, input power, output power, overall efficiency, volumetric efficiency and charge pressure. Selected recorded points are shown for reference.

Charge pressure: 1.5 MPa; charge flow 10.8 L/min. Figures are reproduced from the original test record; interpretation should follow the test-bench measurement and calculation method.

Engineering Drawing & Dimensions

Engineering interface data for the LPV50-MA-R-21 is contained in the LPV30/50-MA-R/L-21/14-NN drawing, covering the mounting flange, output shaft spline, hydraulic ports, control interface and rotation direction. Key interface information includes:

• High pressure ports A and B; leakage ports L1 / L2; oil suction port S
• High pressure relief valves A / B; low pressure relief valve
• Pressure taps Ma / Mb: 9/16-18; servo-cylinder pressure taps (both sides): 9/16-18
• Input shaft spline options: 21 teeth (16/32 pitch), 14 teeth (12/24 pitch), 30° pressure angle
• Input shaft dividing circle diameters: Ø33.34 mm (21T) / Ø29.63 mm (14T)
• Control handle spline: 1/4-20 UNC-2A, 24 teeth, diametrical pitch 64/128, OD 9.5 mm (SAE 1963)
• Mounting: 4 bolts M10, 25 mm depth; ports L1 / L2 1 1/16-12; port S 1 5/16-12; centre thread M10; relief valve options 32 / 35 / 40 MPa; charge/suction pressure 1.8–2.4 MPa
• Rotation direction R (clockwise) / L (anticlockwise)

Drawing technical requirement: minimum speed 500 r/min, maximum speed 3500 r/min, rated working pressure 30 MPa. Interface dimensions should be confirmed against the engineering drawing before installation.

Quality Control & Final Inspection

Product identification, factory test documentation and engineering specifications form the basis of quality control for the LPV50-MA-R-21. The test report documents the pump's displacement, pressure, speed, flow and output power recorded during closed-loop testing.

• Product model identification
• Hydraulic pump performance testing
• Pressure and speed verification
• Flow and displacement recording
• Torque and power measurement
• Overall and volumetric efficiency recording
• Engineering interface verification

Dimensional inspection · surface and finish inspection · assembly inspection · leakage inspection · rotation (R / L) inspection · port and interface inspection · final inspection before packing.

Project Reference

The unit is documented in the project record for a Malaysia customer. The record lists Shandong Highland Hydraulic Seiko Co., Ltd. as manufacturer, a quantity of 50 units and a concrete mixer truck application.

• Project: Variable Piston Pump for Malaysia
• Model: LPV50-MA-R-21
• Quantity: 50 units
• Application: Concrete mixer trucks
• Client: Malaysia
• Manufacturer: Shandong Highland Hydraulic Seiko Co., Ltd.
• Drive configuration: Closed circuit hydraulic system

Technical Documents

Technical documents available for the LPV50-MA-R-21 include:

The documents provide displacement, speed, pressure, torque, power, temperature and weight data, confirming the LPV50 as a closed axial piston pump. The relevant records are stored under the unit's component number.

Highland Hydraulic axial piston pumps FAQ: 

Q1: Are you a manufacturer?

A: Yes, we are manufacturer to produce, design and test by ourselves.

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: Do you test all piston pumps before shipment?

A: Yes, we have 100% test before shipment, we must guarantee pumps quality.