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 swash plate-type hydraulic pump engineered specifically for agricultural machinery applications. With a continuous operating pressure of up to 350 bar, it ensures stable and efficient hydraulic power for large tractors and combine harvesters. Its robust design and modular construction make it a reliable solution for demanding farming environments where durability and efficiency are critical.
Large Tractors: Hydraulic power for steering, lifting, and transmission systems.
Combine Harvesters: Efficient control of hydraulic functions such as header lifts, unloading augers, and threshing mechanisms.
Agricultural Implements: Supporting hydraulically driven attachments requiring high pressure and precise control.
High Pressure Capacity: Continuous operation at 350 bar, maximum 400 bar.
Energy Efficient: Variable displacement automatically adjusts flow to match system demand.
Low Noise: Optimized fluid channels reduce operational noise, enhancing operator comfort.
Durable Construction: Built with high-strength materials for long service life in agricultural environments.
Flexible Configuration: Modular design allows adaptation to different hydraulic control systems.
| Size | 40 | 71 | 125 | 180 | 200 | 250/H | 355/H |
|---|---|---|---|---|---|---|---|
| Displacement (cm³) | 40 | 71 | 125 | 180 | 200 | 250 | 355 |
| Max Speed (rpm) | 2600 | 2200 | 1800 | 1800 | 1800 | 1900 | 1700 |
| Rated Pressure | 350 bar | 350 bar | 350 bar | 350 bar | 350 bar | 350 bar | 350 bar |
| Max Pressure | 400 bar | 400 bar | 400 bar | 400 bar | 400 bar | 400 bar | 400 bar |
| Max Flow (l/min) | 104 | 156 | 225 | 324 | 360 | 475 | 604 |
| Weight (kg) | 39 | 53 | 88 | 102 | 102 | 184 | 207 |
High-strength alloy selection
CNC machining for precision parts
Heat treatment for durability
Precision assembly with swash plate mechanism
High-pressure testing & performance validation
Always fill the pump with clean hydraulic oil before start-up.
Maintain oil cleanliness at NAS level 9 or better.
Do not exceed rated speed and pressure.
Perform regular oil and filter changes.
Protect from contaminants and store in clean conditions.
Warranty: 12 months from delivery.
Technical Support: Installation, operation, and troubleshooting guidance.
Spare Parts: Original parts available for long-term supply.
Service Network: Global after-sales service for agricultural customers.
Q1: Is HA4VSO suitable for tractors of all sizes?
A1: Yes, with displacement options from 40 to 355 cm³, it covers small to large-scale agricultural machinery.
Q2: Can it operate with bio-hydraulic oils?
A2: Yes, but operational parameters may be reduced depending on the oil type.
Q3: How often should the hydraulic oil be changed?
A3: It depends on usage, but generally every 1000 operating hours or annually.
