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 |
| Model No | HA4VSO |
| Part Name | Agricultural Machinery |
| Power | Hydraulic |
| Rotation Speed | 2000 rpm |
| Appliion | Construction Machinery Parts |
| Max Operating Temperature | 80°C |
| 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 |
| Model No | HA4VSO | Part Name | Agricultural Machinery |
| Power | Hydraulic | Rotation Speed | 2000 rpm |
| Appliion | Construction Machinery Parts | Max Operating Temperature | 80°C |
| Brand Name | KERSTERN | Model Number | HA4VSO Series |
| Certification | SIO9001 | Place of Origin | China |
| High Light | 2000rpm axial piston pump ，HA4VSO axial piston pump ，Agricultural Machinery variable piston pump rexroth | ||
The HA4VSO axial piston variable displacement pump is a high-performance hydraulic solution designed exclusively for agricultural machinery. With a continuous working pressure of 350 bar and a maximum pressure of 400 bar, this swash plate-type pump delivers reliable hydraulic power for heavy-duty tractors and combine harvesters. Engineered with modular construction and advanced control technology, it ensures long service life, high efficiency, and optimal adaptation to modern farming equipment.
Large Tractors: Power steering, lifting systems, and hydraulic transmission.
Combine Harvesters: Reliable drive for cutting, threshing, and grain handling mechanisms.
Agricultural Implements: Hydraulic operation for plows, seeders, and sprayers.
High Pressure Capability: Continuous operation at 350 bar ensures strong hydraulic force.
Variable Displacement: Swash plate design allows precise flow adjustment according to load demand.
Energy Efficiency: Matches flow output with system requirements, minimizing fuel consumption.
Durable Materials: Built with cast iron and alloy steel, resistant to wear and harsh farm environments.
Low Noise Operation: Optimized port design reduces vibration and noise.
| Size | 40 | 71 | 125 | 180 | 200 | 250 | 355 |
|---|---|---|---|---|---|---|---|
| Displacement (cm³) | 40 | 71 | 125 | 180 | 200 | 250 | 355 |
| Max Speed (rpm) | 2600 | 2200 | 1800 | 1800 | 1800 | 1500 | 1500 |
| Rated Pressure (bar) | 350 | 350 | 350 | 350 | 350 | 350 | 350 |
| Max Pressure (bar) | 400 | 400 | 400 | 400 | 400 | 400 | 400 |
| Max Flow (l/min) | 104 | 156 | 225 | 324 | 360 | 375 | 533 |
| Weight (kg) | 39 | 53 | 88 | 102 | 102 | 184 | 207 |
Material Selection – high-strength steel and cast iron.
Precision CNC Machining – ensures accurate tolerances.
Heat Treatment – improves hardness and fatigue resistance.
Assembly & Testing – each pump undergoes pressure and flow testing.
Surface Treatment – anti-corrosion coating for agricultural use.
Fill with clean hydraulic oil before startup.
Maintain oil cleanliness at NAS class 9 or better.
Avoid exceeding rated pressure and speed.
Regularly inspect filters and hoses for contamination.
Warranty: 12 months from delivery.
Spare Parts: Genuine replacements for fast service.
Technical Support: Remote and on-site assistance.
Maintenance Training: Guidance for operators and service staff.
Q1: Can the HA4VSO pump work with bio-based hydraulic fluids?
A1: Yes, compatible with HF fluids under reduced operating data.
Q2: Is it suitable for small tractors?
A2: It is primarily designed for large tractors and combines, not compact equipment.
Q3: What is the expected service life?
A3: With proper maintenance, service life exceeds 20,000 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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