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 |
| Brand Name | KERSTERN |
| Model Number | HA4VSO Series |
| 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 |
| Brand Name | KERSTERN | Model Number | HA4VSO Series |
| Certification | SIO9001 | Place of Origin | China |
| High Light | HA4VSO variable displacement pump ，Industrial variable displacement pump ，HA4VSO variable displacement piston pumps | ||
The HA4VSO series axial piston pump is a high-performance swash plate-type variable displacement hydraulic pump engineered specifically for industrial applications. With a continuous operating pressure up to 350 bar and a maximum pressure of 400 bar, it ensures reliable hydraulic power for demanding environments such as steel and metallurgy equipment and hydraulic power units. Designed with modular construction, it offers flexibility, energy efficiency, and long service life, making it the ideal choice for heavy-duty industrial systems.
Steel & Metallurgy Equipment: Provides stable hydraulic power for rolling mills, smelting lines, and heavy forming presses.
Hydraulic Power Units (HPUs): Ensures efficient energy transfer in centralized hydraulic systems for industrial plants.
High Pressure Capability: Continuous 350 bar and peak 400 bar performance for demanding industrial systems.
Variable Displacement: Adjustable flow output to match system requirements, reducing energy consumption.
Durability & Reliability: Built from high-strength materials for long service life under continuous heavy load.
Low Noise Operation: Optimized fluid channels and porting reduce noise, improving workplace environment.
Modular Design: Flexible configuration for different industrial system requirements.
Energy Efficiency: Intelligent pressure compensation ensures minimal energy loss during low load conditions.
| Size | 40 | 71 | 125 | 180 | 200 | 250/H | 355/H |
|---|---|---|---|---|---|---|---|
| Displacement (cm³/rev) | 40 | 71 | 125 | 180 | 200 | 250/250 | 355/355 |
| Max Speed (rpm) | 2600 | 2200 | 1800 | 1800 | 1800 | 1500/1900 | 1500/1700 |
| Permissible Speed (rpm) | 3200 | 2700 | 2200 | 2100 | 2100 | 1800/2100 | 1700/1900 |
| Max Flow (l/min) | 104 | 156 | 225 | 324 | 360 | 375/475 | 533/604 |
| Max Power (kW) | 61 | 91 | 131 | 189 | 210 | 219/277 | 311/352 |
| Weight (kg) | 39 | 53 | 88 | 102 | 102 | 184 | 207 |
Material Selection – Premium alloy steel and cast iron for durability.
CNC Precision Machining – Guarantees dimensional accuracy and smooth piston operation.
Heat Treatment – Enhances wear resistance for extended life.
Assembly & Testing – Each pump undergoes hydraulic performance testing at rated pressure.
Surface Protection – Anti-corrosion treatment ensures reliability in industrial environments.
Fill the pump casing with clean hydraulic oil before startup.
Maintain oil cleanliness at NAS class 9 or better.
Avoid running the pump above rated pressure and speed.
Regularly inspect filters and replace hydraulic oil to ensure long-term performance.
Ensure proper system venting before operation to prevent cavitation.
Warranty: 12 months against manufacturing defects.
Technical Support: Guidance for installation, commissioning, and troubleshooting.
Spare Parts Supply: Original replacement parts to minimize downtime.
Repair & Maintenance: Professional service team available worldwide.
Q1: Is the HA4VSO pump suitable for mobile machinery?
A1: No. This model is specifically designed for industrial applications only, such as steel and metallurgy equipment.
Q2: What hydraulic fluids are recommended?
A2: Standard mineral hydraulic oils (ISO VG 46 or VG 68). HF fluids are possible with reduced operating data.
Q3: How often should maintenance be performed?
A3: Oil and filter checks should be performed regularly, with complete oil replacement according to system usage conditions.
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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