Shandong Keystone Hydraulic Co.,Ltd
| Payment Terms | T/T |
| Supply Ability | 5,000 units per month |
| Delivery Time | 7 work days |
| Packaging Details | Wooden boxes and cartons |
| 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 |
| Brand Name | KERSTERN |
| Model Number | A4VG90 |
| Certification | SIO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 5,000 units per month |
| Delivery Time | 7 work days | Packaging Details | Wooden boxes and cartons |
| 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 | Brand Name | KERSTERN |
| Model Number | A4VG90 | Certification | SIO9001 |
| Place of Origin | China | ||
| High Light | A4VG90EP3 axial piston hydraulic pump ，Agricultural Machinery axial piston hydraulic pump ，High Pressure axial piston pump | ||
The A4VG90EP3 axial piston variable hydraulic pump is a high-performance pump designed exclusively for agricultural machinery hydraulic systems. With a maximum speed of 3000 rpm, this pump ensures reliable operation under high-pressure and continuous working conditions. Engineered with advanced technology, it features robust construction, high efficiency, and long service life, making it the ideal hydraulic power source for tractors, harvesters, and other heavy-duty farming equipment.
Tractors: Hydraulic lifting, steering, and transmission systems
Harvesters: Powering cutting, conveying, and unloading mechanisms
Seeders & Planters: Ensuring precise control of hydraulic seed distribution
Sprayers & Fertilizers: Driving pumps for spraying systems and agricultural implements
Agricultural Implements: Supporting plows, tillers, and other hydraulic-driven attachments
High Efficiency: Variable displacement control optimizes energy consumption.
Durable Construction: Made with high-strength alloy steel and aluminum components.
High Pressure Capability: Rated for continuous operation at 350 bar with peak pressure up to 445 bar.
Low Noise Operation: Improved working environment for agricultural machinery.
Long Service Life: Superior wear resistance and advanced anti-contamination design.
| Attribute | Value |
|---|---|
| Model Number | A4VG90EP3DM1/32L-NSD10F07 |
| Displacement | 90 ml/r |
| Rotation Direction | Levorotation |
| Work Mode | Closed circuit |
| Rated Speed | 3000 rpm |
| Maximum Speed | 3300 rpm |
| High Pressure Relief | 445 bar |
| Cut-Off Pressure | 350 bar (adjustable) |
| Housing Pressure | Max. 2 bar |
| Suction Pressure | Min. 0.8 bar |
| Replenishing Pressure | 25 bar |
| Control Mode | Electric proportional control (12V DC) |
| Filtration Precision | 10 μm |
Material Selection – High-strength alloy steel and aluminum casting.
Precision CNC Machining – Ensures accuracy and durability.
Heat Treatment & Surface Hardening – Enhances wear resistance.
Assembly & Testing – High-pressure endurance and performance tests.
Final Inspection – Ensures compliance with ISO and agricultural standards.
Fill the casing with clean hydraulic oil before operation.
Maintain oil cleanliness at NAS level 9 or better.
Avoid impact or shock to the transmission shaft during transport.
Ensure inlet pressure is within the recommended range.
Regularly monitor hydraulic oil condition and system pressure.
Warranty: 12 months against manufacturing defects.
Technical Support: Professional guidance for installation and commissioning.
Spare Parts: Genuine OEM parts available for long-term maintenance.
Global Service: Fast response for agricultural machinery users worldwide.
Q1: Can the A4VG90EP3 pump be used outside agricultural machinery?
A1: No, this model is specifically designed for agricultural hydraulic systems.
Q2: What hydraulic oil should be used?
A2: Use ISO VG46 or VG68 hydraulic oil with proper filtration.
Q3: How often should the filters be replaced?
A3: Replace filters according to system workload, typically every 500–1000 operating hours.
Company Details
Business Type:
Manufacturer
Year Established:
2019
Total Annual:
5000000-6000000
Employee Number:
>55
Ecer Certification：
Verified Supplier
Shandong Keystone Hydraulic Co., Ltd. is located in Tai bai hu new district, Jining city, Shandong Province, the hometown of Confucius and Mencius. It is only 40 minutes away from Jining Daxing Airport and Beijing-Shanghai High-speed Railway Station, and only 10 minutes aw... Shandong Keystone Hydraulic Co., Ltd. is located in Tai bai hu new district, Jining city, Shandong Province, the hometown of Confucius and Mencius. It is only 40 minutes away from Jining Daxing Airport and Beijing-Shanghai High-speed Railway Station, and only 10 minutes aw...
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