A11VO60 Hydraulic Pump Technical Sheet

REXROTH A11VO60 Axial Piston Variable Pump

The A11VO60 is a swashplate-type axial piston variable pump used in open circuit hydrostatic systems. It is manufactured under the hydraulic component platform of :contentReference[oaicite:0]{index=0} and is commonly installed in mobile machines where continuous load variation is required during operation.

This model is typically selected when the hydraulic system requires higher flow than 40cc-class pumps while maintaining stable pressure control under repeated digging, lifting, and traveling cycles.

1. Technical Specification

Measured and commonly applied working parameters in field installation systems:

• Displacement: 60 cm³/rev
• Nominal pressure: 280 bar
• Maximum pressure (intermittent): 350 bar
• Speed range: 1000 – 2800 rpm
• Hydraulic oil viscosity range: 16 – 100 mm²/s
• Recommended working oil: ISO VG 46
• Mounting standard: SAE flange interface

At 2500 rpm under typical excavator operating conditions, theoretical flow output is approximately 150–165 L/min depending on system efficiency and leakage coefficient.

2. Working Characteristics

In real hydraulic circuits, the A11VO60 is often installed as the main pump in load-sensing systems. During simultaneous operation of boom lifting and swing rotation, pressure fluctuation remains controlled within the system relief setting range, preventing unstable actuator response.

In long-hour operation (8–10 hours per shift), the pump shows stable displacement response without noticeable performance drift when hydraulic oil temperature is maintained between 50°C and 80°C.

3. Functional Advantages in System Use

• Supports variable displacement control for energy reduction under partial load conditions
• Maintains stable flow delivery during multi-actuator operation
• Suitable for frequent start-stop cycles in mobile equipment
• Compatible with standard load-sensing hydraulic architecture
• Designed for continuous operation in vibration-heavy machine frames

4. Application Fields

• Earthmoving machinery hydraulic drive systems
• Mining excavation and loading equipment
• Road construction machinery
• Agricultural heavy-duty hydraulic systems
• Municipal engineering and lifting equipment

5. Typical Installation Equipment

In hydraulic excavators, this pump is commonly connected to the main control valve group and is responsible for boom, arm, bucket, and swing hydraulic circuits.

In wheel loaders, it is used for lifting arm control and bucket tilting operations under variable load conditions such as sand, gravel, and bulk material handling.

In drilling rigs, it is applied in rotary drive systems where stable torque output is required during continuous drilling penetration.

6. Maintenance and Operation Notes

• Oil cleanliness should be maintained at ISO 4406 18/16/13 or better
• First oil filter replacement is recommended after 250 hours of initial operation
• Regular inspection of suction line is required to avoid cavitation risk
• Operating under low oil temperature (<30°C) should be avoided for long duration

7. FAQ

Q1: Can A11VO60 be used as a direct replacement for smaller displacement pumps?
A: Only when the hydraulic system is recalculated for higher flow demand. Otherwise, system imbalance may occur.

Q2: What is the most common failure cause in real applications?
A: Contaminated hydraulic oil and insufficient filtration are the primary causes observed in field maintenance records.

Q3: Is this pump suitable for continuous mining operation?
A: Yes, when paired with proper cooling and filtration systems, it is widely used in mining excavators.

Q4: Does it require special installation alignment?
A: Standard SAE mounting is sufficient, but shaft alignment tolerance must be controlled to avoid bearing load.

Q5: What type of system works best with this model?
A: Load-sensing mobile hydraulic systems with variable demand cycles provide optimal performance.