A4VG180 in series with another 180 charge pump

A4VG180 in series with another 180 charge pump

2 month ago

6 0

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

1. Configuration Structure Analysis

• Main Pump (A4VG180)

• Type: Closed-loop variable displacement axial piston pump.

• Displacement: 180 cm³/rev (adjustable via swashplate mechanism to regulate output flow).

• Core Function: Provides high-pressure hydraulic power to drive actuators (e.g., motors, cylinders).

• Series-Connected Charge Pump (180 Charge Pump)

• Type: Typically a fixed-displacement gear pump or small-displacement piston pump.

• Displacement:Note: If "180" refers to the charge pump's displacement, it is unusually large (charge pumps usually range from 28–50 cm³/rev). Clarification is needed.

• Core Functions:

• Charge Supply: Replenishes hydraulic fluid to the low-pressure side of the closed loop to compensate for internal leakage and maintain system pressure stability.

• Cooling: Circulates oil to dissipate heat and prevent overheating.

• Lubrication: Supplies oil to bearings and friction pairs in the pump/motor.

Clarification Note:

If "180 charge pump" indicates a charge pump with 180 cm³/rev displacement, this would be atypical (charge pumps are generally much smaller than main pumps). More commonly, an A4VG180 main pump is paired with a smaller charge pump (e.g., 28 cm³/rev). Verify model specifications.

------

2. Typical Application Scenarios

• Closed-Loop Hydraulic Systems(e.g., construction machinery, marine propulsion):

• Main Pump: Drives travel motors or slewing motors for equipment movement or steering.

• Charge Pump: Ensures sufficient oil in the closed loop to prevent cavitation or pressure fluctuations.

• Examples: Excavator travel drives, road roller vibration systems, crane slewing mechanisms.

• High-Pressure, High-Flow Demands:

• The main pump (A4VG180) provides high-pressure power, while the charge pump (if large-displacement) may also supply oil to auxiliary circuits (e.g., pilot control lines).

------

3. Technical Advantages

• Efficient Charge Supply: Precisely controls replenishment volume to minimize energy loss.

• System Protection: Prevents pressure drops due to leakage in closed loops, extending main pump lifespan.

• Integrated Design: Saves installation space and reduces piping complexity (charge pumps are often mounted directly on the main pump end cover).

------

4. Key Parameter Comparison (Assuming 28 cm³/rev Charge Pump)

【表格】

Parameter Main Pump (A4VG180) Charge Pump (28 cm³/rev)

Displacement 180 cm³/rev 28 cm³/rev

Rated Pressure 400 bar (max) 20–30 bar (charge pressure)

Speed Range 500–3000 rpm Synchronized with main pump

Drive Method Variable control (swashplate angle adjustment) Fixed output

------

5. Common Issues & Solutions

• Issue 1: Insufficient Charge Pressure

• Causes: Worn charge pump, clogged filter, air leaks in suction lines.

• Solutions: Check charge pump pressure sensor, replace filter, tighten line fittings.

• Issue 2: System Overheating

• Causes: Inadequate charge flow due to blockage or mismatched charge pump displacement.

• Solutions: Adjust charge pump displacement (if variable) or replace with a properly sized unit.

------

6. Selection Recommendations

• Verify Charge Pump Displacement: Choose based on system requirements (typically 5–15% of main pump displacement).

• Match Pressure Ratings: Ensure charge pump’s rated pressure exceeds the closed loop’s charge port pressure (usually 20–30 bar).

• Opt for Integrated Design: Prioritize models with built-in charge pumps (e.g., Rexroth A4VG series) for simplified installation.

Contact Now

If you are interested in the product, contact 2bvideo.com for more information for more information

To:: Ningbo Hengnuo Hydraulic Drive Co.,Ltd

Message:

Submit

Disclaimer：

The information of 2bvideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of 2bvideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

4 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch , hydraulic system

 Contact now

Disclaimer：