A11VO75 Axial Piston Pump
A11VO75 Axial Piston Variable Displacement Pump
Designed for mobile hydraulic systems requiring stable flow under variable load conditions. Manufactured within the hydraulic engineering platform of :contentReference[oaicite:0]{index=0}.
Overview
The A11VO75 is commonly used as the main pump in excavator hydraulic systems. It is selected when 60cc-class pumps cannot maintain sufficient flow during combined actuator operation.
In typical construction machinery, it operates continuously in 25–40 ton class equipment, supporting multi-function movement such as digging, lifting, and swing coordination.
Technical Data
| Displacement | 75 cm³/rev |
| Pressure (continuous) | 280 bar |
| Peak pressure | 350 bar |
| Speed range | 900–2600 rpm |
| Oil type | ISO VG 32–68 |
Application Behavior
At typical operating speed (2200–2400 rpm), flow output is approximately 170–180 L/min, depending on system efficiency and hydraulic oil condition.
Stable operation depends more on filtration and suction conditions than on mechanical wear of the pump itself.
Applications
- Hydraulic excavators (25–40 ton class)
- Wheel loaders for bulk material handling
- Drilling and piling equipment
- Construction machinery hydraulic systems
Maintenance Notes
- Maintain oil cleanliness at ISO 4406 18/16/13 or better
- Filter replacement typically after 200–300 working hours
- Air leakage on suction line is a common failure source
- Cold start under load should be avoided
FAQ
Q: What is the main use of A11VO75?
A: It is used as the main hydraulic pump in mobile machinery with variable load demand.
Q: Is it suitable for excavators?
A: Yes, commonly used in 25–40 ton excavator systems.
Q: What affects service life most?
A: Oil cleanliness and suction conditions are the main factors.
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