Variable Displacement Axial Piston Pumps With Swash Plate Structure

Product Description

Variable Displacement Axial Piston Pumps with Swash Plate Structure

Hydraulic variable displacement axial piston pumps application range:

Variable displacement axial piston pumps introduction:

Our axial piston pumps redefine hydraulic efficiency, combining advanced design with precision engineering. The core of each pump features a robust cylinder block and arrayed pistons, optimized for fluid dynamic excellence. The swash plate mechanism not only ensures smooth and consistent fluid flow but also enables precise control over a wide range of operational conditions. Tailored for demanding applications, our axial piston pumps provide a reliable and efficient solution, elevating your hydraulic system's performance to new heights.

Hydraulic axial piston pumps main features:

1. Variable displacement axial piston hydraulic pumps

2. Axial piston hydraulic pumps have swash plate structure

3. Be suitable for hydrostatic transmissions with closed-loop circuit

4. Manual servo and hydraulic variable control

5. Axial piston hydraulic pumps with a charging oil pump

6. LPV90 hydraulic variable displacement axial piston pump 

7. Hydraulic piston pump 42Mpa high pressure 

LPV90 Axial piston pumps technical specification:

Notices:

Managing the temperature of the hydraulic fluid is vital to prevent overheating and maintain the performance of axial piston pumps. Excessive heat can degrade the fluid and damage the pump's internal components. Implement cooling systems or heat exchangers as necessary, especially in environments or applications where the pump is subject to continuous operation or high loads, such as in heavy machinery or process industry applications. Regular temperature monitoring and proactive temperature management can significantly extend the life of the pump and ensure reliable operation.

Factory Production & Inspection Evidence

Each LPV90-MA-R-23 unit is produced by Shandong Highland Hydraulic Seiko Co., Ltd., with production information recorded for traceability. The supplied project record lists a production quantity of 100 units, and the factory test report identifies the tested unit by Component No. 02604200203002.

• LPV – LPV series closed axial piston pump
• 90 – 90 mL/r displacement
• MA – manual servo control
• R – clockwise rotation
• 23 – 23-tooth input shaft (16/32 pitch)

Evidence type: factory production / product identification.

Factory Performance Testing

Factory performance testing of the LPV90-MA-R-23 is recorded on a closed-loop hydraulic pump test bench. The test documentation records Component No. 02604200203002, a test on 2026/4/20 at 9:12, a test temperature of 22.7 °C and a power recovery ratio of 50%. Rated displacement is 90.5 mL/rev and rated pressure is 35 MPa; the test-bench main parameters are a maximum speed of 3200 r/min and a maximum pressure of 42 MPa.

Recorded Test Data

For the LPV90-MA-R-23, 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: 1.7 MPa; charge flow 22.4 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 LPV90-MA-R-23 is contained in the LPV70/90-MA-R/L-21/23/14-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), 23 teeth (16/32 pitch), 14 teeth (12/24 pitch), 30° pressure angle
• Input shaft dividing circle diameters: Ø33.34 mm (21T) / Ø36.5 mm (23T) / 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 M12, 25 mm depth; ports L1 / L2 1 1/16-12; port S 1 5/16-12; 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 3000 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 LPV90-MA-R-23. 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 Belarus customer. The record lists Shandong Highland Hydraulic Seiko Co., Ltd. as manufacturer, a quantity of 100 units and a rye harvester application.

• Project: Variable Piston Pump for Belarus
• Model: LPV90-MA-R-23
• Quantity: 100 units
• Application: Rye harvester
• Client: Belarus
• Manufacturer: Shandong Highland Hydraulic Seiko Co., Ltd.
• Drive configuration: Closed circuit hydraulic system

Technical Documents

Technical documents available for the LPV90-MA-R-23 include:

The documents provide displacement, speed, pressure, torque, power, temperature and weight data, confirming the LPV90 as a closed axial piston pump. Records are filed against the unit's component number for reference.

FAQ of variable displacement axial piston pumps: 

Q1: Are you a manufacturer?

A: Yes, we are manufacturer to produce, design and test axial piston hydraulic pumps 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. 

Whatsapp/wechat/phone:+86 18678785446

E-mail:ld@hldhydraulic.com

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