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 high pressure hydraulic piston pump ，Smelting Equipment high pressure hydraulic piston pump ，90ml/r high pressure hydraulic pump | ||
The A4VG90EP3 variable axial piston hydraulic pump is a high-pressure, closed-circuit pump engineered exclusively for smelting equipment applications. With a maximum speed of 3000 rpm, robust construction, and variable displacement design, it delivers precise control, high efficiency, and superior reliability in heavy-duty smelting environments. This pump is designed to meet the unique challenges of metallurgical operations, ensuring stable hydraulic power under extreme heat, dust, and continuous load conditions.
The A4VG90EP3 is designed only for smelting equipment, including:
Furnace hydraulic systems: powering tilting, lifting, and cooling mechanisms
Continuous casting machines: ensuring smooth, reliable hydraulic operations
Metal refining units: maintaining stable hydraulic power under high pressure
Auxiliary smelting machinery: supporting pressing, feeding, and extraction processes
High Efficiency: Variable displacement design reduces energy loss, maximizing performance.
Heavy-Duty Pressure Capability: Rated pressure up to 350 bar with overflow protection up to 445 bar.
Durable Construction: Made from steel and aluminum alloy to resist corrosion and wear in metallurgical environments.
Low Noise: Optimized internal structure provides quieter operation in industrial smelting plants.
Long Service Life: Precision engineering and integrated filtration ensure minimal downtime and extended reliability.
| Attribute | Value |
|---|---|
| Model Number | A4VG90EP3DM1/32L-NSD10F07 |
| Displacement | 90 ml/r |
| Work Mode | Closed circuit |
| Rotation Direction | Levorotation |
| Rated Speed | 3000 rpm |
| High Pressure Overflow | 445 bar |
| Cut-Off Pressure | 350 bar (adjustable) |
| Housing Pressure | Max 2 bar / Peak 5 bar |
| Oil Suction Pressure | 0.8–5 bar |
| Oil Replenishment | 25 bar |
| Slippage Pump Volume | 18 ml/r |
| Control Mode | EP3 electric proportional valve (DC12V) |
| Filtration Precision | 10 μm |
Material Selection: High-strength steel and aluminum alloy chosen for durability.
Precision Machining: CNC processing for accuracy and performance stability.
Heat Treatment: Increases hardness and wear resistance of critical components.
Assembly & Testing: High-pressure testing ensures leak-free, stable performance.
Anti-Corrosion Protection: Surface treatments extend service life in smelting environments.
Fill the casing with clean hydraulic oil before operation to avoid dry running.
Maintain oil cleanliness at NAS 9 standard or better.
Avoid strong impacts on the pump shaft during installation and transport.
Apply dust-proof measures to all exposed holes after assembly.
Regularly monitor pressure levels and replace filters to maintain system stability.
Warranty: Standard 1-year warranty covering manufacturing defects.
Technical Support: Professional guidance for installation and commissioning.
Spare Parts: Genuine OEM components available for quick replacement.
Repair Service: Experienced service teams provide global on-site support.
Q1: Is the A4VG90EP3 suitable for other industries?
A1: No. This model is specifically designed and optimized for smelting equipment only.
Q2: Can the cut-off pressure be adjusted?
A2: Yes, the pump allows adjustable cut-off pressure up to 350 bar.
Q3: What hydraulic oil is recommended?
A3: Use ISO VG46 or VG68 hydraulic oil with strict cleanliness control.
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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