Shandong Keystone Hydraulic Co.,Ltd
Product Details
Place of Origin: China
Brand Name: KERSTERN
Certification: SIO9001
Model Number: HA4VSO Series
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
Model No: |
HA4VSO |
Part Name: |
Agricultural Machinery |
Power: |
Hydraulic |
Rotation Speed: |
2000 Rpm |
Appliion: |
Construction Machinery Parts |
Max Operating Temperature: |
80°C |
Model No: |
HA4VSO |
Part Name: |
Agricultural Machinery |
Power: |
Hydraulic |
Rotation Speed: |
2000 Rpm |
Appliion: |
Construction Machinery Parts |
Max Operating Temperature: |
80°C |
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.
