Shandong Keystone Hydraulic Co.,Ltd
Product Details
Place of Origin: China
Brand Name: KERSTERN
Certification: SIO9001
Model Number: A4VG90
Payment & Shipping Terms
Minimum Order Quantity: 5
Price: Negotiable
Packaging Details: Wooden boxes and cartons
Delivery Time: 7 work days
Payment Terms: T/T
Supply Ability: 5,000 units per month
Application: |
Other,Metering,oil,Sewage,hydraulic Jack Etc |
Pressure: |
High Pressure,Low Pressure,25MPa,less Than 44mpa |
Structure: |
Piston Pump,Single-stage Pump,Diaphragm Pump,Gear Pump,Vane Pump |
Power: |
Hydraulic,Electric,Pneumatic,7.5KW To 75KW,Other |
Fuel: |
Diesel,electric,hydraulic Oil,Other,standard 380V 50Hz 3phase |
Theory: |
Rotary Pump,Centrifugal Pump,Reciprocating Pump,Electromagnetic Pump,Other |
Standard Or Nonstandard: |
Standard |
Warranty: |
1 Year,12 Months |
Material: |
Steel,Aluminum Alloy,Cast Iron,Casting Iron,304SS |
Type: |
Hydraulic Gear Pump,electric Water Pump,Rotary,high Pressure Jet Grouting Pumps,diesel Pump |
Product Name: |
High Pressure Micro Hydraulic Pumps For Logsplitter,hydraulic Diaphragm Metering Pump,Model High Pressure Hydraulic Manual Pumps,High Pressure Hydraulic Hand Pumps,Compression Machine |
Color: |
Black，blue |
Voltage: |
380V,220v/50hz,415V,etc Are All Available,220V |
Oil Capacity: |
2200 Ml,2.2L,901ml |
Feature: |
High Efficiency,Long Life,Waste Water Treatment For House Septic Tank Or Flood,Low Noise |
Application: |
Other,Metering,oil,Sewage,hydraulic Jack Etc |
Pressure: |
High Pressure,Low Pressure,25MPa,less Than 44mpa |
Structure: |
Piston Pump,Single-stage Pump,Diaphragm Pump,Gear Pump,Vane Pump |
Power: |
Hydraulic,Electric,Pneumatic,7.5KW To 75KW,Other |
Fuel: |
Diesel,electric,hydraulic Oil,Other,standard 380V 50Hz 3phase |
Theory: |
Rotary Pump,Centrifugal Pump,Reciprocating Pump,Electromagnetic Pump,Other |
Standard Or Nonstandard: |
Standard |
Warranty: |
1 Year,12 Months |
Material: |
Steel,Aluminum Alloy,Cast Iron,Casting Iron,304SS |
Type: |
Hydraulic Gear Pump,electric Water Pump,Rotary,high Pressure Jet Grouting Pumps,diesel Pump |
Product Name: |
High Pressure Micro Hydraulic Pumps For Logsplitter,hydraulic Diaphragm Metering Pump,Model High Pressure Hydraulic Manual Pumps,High Pressure Hydraulic Hand Pumps,Compression Machine |
Color: |
Black，blue |
Voltage: |
380V,220v/50hz,415V,etc Are All Available,220V |
Oil Capacity: |
2200 Ml,2.2L,901ml |
Feature: |
High Efficiency,Long Life,Waste Water Treatment For House Septic Tank Or Flood,Low Noise |
The A4VG90EP3 high-pressure axial piston hydraulic pump is a variable displacement pump engineered exclusively for railway construction machinery. With a maximum speed of 3000 rpm and robust design, it delivers consistent hydraulic power under heavy-duty conditions. Its efficient closed-circuit operation, high-pressure capability, and long service life make it the preferred choice for critical railway engineering equipment.
The A4VG90EP3 is designed only for railway construction machinery, including:
Railway track laying machines
Railway maintenance vehicles
Hydraulic-powered tamping machines
Ballast regulators and rail alignment systems
High Efficiency: Variable displacement design optimizes performance while reducing energy consumption.
High Pressure Output: Rated up to 350 bar, with overflow pressure reaching 445 bar, suitable for heavy-duty railway applications.
Durability: Constructed from alloy steel and aluminum components for long service life.
Low Noise: Reduced noise design enhances operator comfort in railway construction environments.
Reliable Control: Equipped with EP3 electronic proportional control for precise flow adjustment.
| Attribute | Value |
|---|---|
| Model Number | A4VG90EP3DM1/32L-NSD10F07 |
| Displacement | 90ml/r |
| Work Mode | Closed circuit |
| Rated Speed | 3000rpm |
| Maximum Speed | 3300rpm |
| Overflow Pressure | 445bar |
| Cut-Off Pressure | 350bar (adjustable) |
| Housing Pressure | Max: 2bar |
| Suction Pressure | Min: 0.8bar |
| Replenishment Pressure | 25bar |
| Charge Pump Volume | 18ml/r |
| Control Mode | EP3 electrical proportional (DC 12V) |
| Filtration | Integrated oil filter, precision 10μm |
Material Selection – High-strength alloy steel and aluminum components.
Precision Machining – CNC machining ensures dimensional accuracy.
Heat Treatment – Increases hardness and wear resistance.
Assembly & Testing – Each unit undergoes high-pressure and leakage tests.
Surface Protection – Anti-rust coating applied to critical areas.
Fill the casing with clean hydraulic oil before operation.
Maintain oil cleanliness at NAS class 9 or better.
Avoid strong impacts on the transmission shaft during transportation.
Prevent hydraulic oil from contaminating external pump surfaces.
Regularly monitor system pressure and replace filters as needed.
Warranty: 12 months from delivery date.
Technical Support: Guidance on installation and commissioning.
Spare Parts: Genuine components available for fast replacement.
Repair Service: Professional maintenance teams support global customers.
Q1: Can the A4VG90EP3 be used outside railway machinery?
A1: No. This model is specifically designed only for railway construction machinery.
Q2: How often should the hydraulic oil be replaced?
A2: Oil replacement intervals depend on operating conditions but should follow NAS level cleanliness requirements.
Q3: What type of control system does it use?
A3: It uses an EP3 electric proportional control (DC12V) for precise output regulation.
