Highland Silage Harvester 90ml/R Axial Piston Pumps Strong Drive Capability

Product Description

  Highland Silage Harvester Axial Piston Pumps Strong Drive Capability

LPV90 axial piston pumps:

We Highland can provide axial piston pumps and axial piston motor assembly and hydraulic system with high quality, high-performance parameters. Highland Piston pump is the variable one that is with charge pump, and piston motors are the quantitative, or variable ones with valve assembly. The control way of variable displacement pumps and motors can be manual or hydraulic operated, and can simply control speed, direction and power of the output shaft of hydraulic motor.

Highland Axial piston pumps main features: 

Features:

• Axial piston pumps are well engineered and easy to handle, apply to silage harvester.
• Variable axial piston pumps of silage harvester are all tapered roller bearing, which can load heavy external axial forces.
• When hydraulic pumps operated mechanically, the servo displacement can control and keep the angle of swash plate and pump displacement.

Highland Axial piston pumps technical specifications: 

Company service of Highland axial piston pumps: 

Quick response within 24 hours.

Provide technical guidance.

Help customer solve hydraulic confusion.

Excellent after-sale service.

100% factory testing before shipment.

Preferential factory price, short delivery time.

Hydraulic oil notice of Highland hydraulic piston pumps: 

Hydraulic system pollution will affect the normal operation at any time, and affect the service life of axial piston pumps, serious damage to hydraulic pump motor, so the cleanlines of hydraulic oil is very important for the hydraulic system.
Hydraulic oil change and oil filter replacement:
1. 500 working hours for first run.
2. Replace every 1500 working hours from now on, but at least once a year.
3. Note: When changing oil, replace hydraulic filter element at the same time.

Tags: axial piston pumps, silage harvester piston pumps, harvester axial piston pumps

Factory Production & Inspection Evidence

The LPV90-MA-R-23 is produced by Shandong Highland Hydraulic Seiko Co., Ltd., with the produced units 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

The LPV90-MA-R-23 is tested 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

The LPV70/90-MA-R/L-21/23/14-NN engineering drawing provides the mounting flange, output shaft spline, hydraulic port, control interface and rotation-direction data for the LPV90-MA-R-23. 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

Quality control documentation for the LPV90-MA-R-23 is based on product identification, factory test records 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

A project record documents the model for a customer located in Belarus. 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. The supporting documents are retained with the unit's component number for traceability.