A8VO55LAOH2/61R1-NZG05K010-K Axial Piston Hydraulic Pump Compatible with Rexroth A8VO Series 61

Rexroth A8VO55LAOH2/61R1-NZG05K010-K Axial Piston Variable Double Hydraulic Pump
 
Key Features
 

1. Variable displacement double pump, open circuit design

2. Nominal pressure: 350 bar, peak pressure up to 400 bar Rexroth

3. High volumetric efficiency, low heat generation, energy saving

4. Heavy-duty cast iron housing, durable for harsh working site

5. LAOH2 control, clockwise rotation R1

6. 1:1 interchangeable with original Rexroth part

 
Technical Specifications
 

 
Application Scenarios
 
This Rexroth A8VO55 hydraulic main pump is commonly used for multi-circuit hydraulic systems of construction equipment:

• Excavators
• Drilling rigs
• Mobile cranes
• Other heavy mobile machinery

 
Specification
 

 
Competitive Advantages
 

1. Stable dual-circuit variable output with high volumetric efficiency. The integrated double pump supports separate flow adjustment for two oil circuits. It reduces power loss and system heat under variable load conditions, with little flow attenuation during long-time heavy-duty operation.

2. Excellent pollution resistance and long service life. Adopting heavy-duty cast iron housing and wear-resistant internal friction pairs, it can withstand harsh site working conditions and lower the frequency of equipment downtime and maintenance.

3. 1:1 interchangeable with original pump for easy installation. Mounting dimensions, oil port positions and control interfaces fully match the original A8VO55 LAOH2 version. No modification on pipelines or brackets is required, greatly cutting machine downtime for replacement.

The Analysis for Rexroth A8VO Axial Piston Pump Commom Breakdown:

1. Low output pressure and insufficient power. Causes: Worn piston and cylinder block, scratched valve plate, contaminated hydraulic oil, improper oil viscosity or stuck control spool. Symptom: Weak machine movement, pressure fails to build up under heavy load.

2. Abnormal noise and heavy vibration while running. Causes: Insufficient oil suction, air leakage on suction pipeline, clogged suction filter, worn bearings or internal cavitation. Symptom: Continuous howling or knocking noise from pump with obvious machine shaking.

3.External oil leakage. Causes: Damaged shaft seal, aged O-rings on end cover, casting defects or scratched seals during assembly. Symptom: Oil seepage or dripping at shaft end and joint surfaces continuous oil level drop.