LPV50 Axial Piston Pumps For Pavement Construction Machinery

Product Description

 Highland LPV50 swash plate axial piston pumps for construction machiney

Highland LPV50 swash plate axial piston pumps basic information: 

Highland Axial Piston pumps are piston or piston reciprocating direction parallel to the cylinder center axis of the Piston pump. Highland axial piston pump uses the volume change produced by the reciprocating movement of the plunger in the plunger hole parallel to the drive shaft to work. Because the plunger and plunger hole are round parts, high precision can be achieved, so the volume efficiency is high.

Highland Swash plate axial piston pumps main features: 

1. Have swash plate structure for reliable operation and a longer life.

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

3. Manual servo and hydraulic variable control.

4. Variable displacement swash plate piston pumps with a charging oil pump.

Highland Swash plate piston pumps technical specifications: 

Highland Swash plate piston pumps usage:

Highland Axial piston 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 Swash plate piston pumps service:

Whatever your machine design needs, we will deliver application-specific designs that fit your machine. It also will lower your business risk exposure through reliable, available, proven products and system solutions.

Quality of craftsmanship

Quality enterprise, trustworthy.

Factory direct sales, one year warranty.

Hydraulic technical support, one-stop service system.

Customers should send the following information before ordering:

1. Pump and motor displacements.

2. Rotation direction.

3. Shaft teeth type and quantity.

3. Control mode.

4. Usage.

5. Label/model or pictures.

Tags: axial piston pumps, swash plate axial piston pumps, swash plate piston pumps

Factory Production & Inspection Evidence

The LPV50-MA-R-21 closed axial piston pump is produced by Shandong Highland Hydraulic Seiko Co., Ltd. under documented factory production records. 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 tested on a 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

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

Charge pressure: 1.5 MPa; charge flow 10.8 L/min. Values are reproduced from the original test record and should be interpreted according to the test-bench measurement and calculation method.

Engineering Drawing & Dimensions

The supplied LPV30/50-MA-R/L-21/14-NN engineering drawing documents the mounting flange, output shaft spline, hydraulic ports, control interface and rotation direction of the LPV50-MA-R-21. 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

Quality control of the LPV50-MA-R-21 rests on product identification, factory test documentation and engineering specifications. 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 model is documented in the project record for a customer in Malaysia. 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:

These documents provide data on displacement, speed, pressure, torque, power, temperature and weight, and confirm the LPV50 as a closed axial piston pump. The supporting documents are retained with the unit's component number for traceability.