Hydraulic Pump Rexroth charge pump A4VG125 F02

Hydraulic Pump Rexroth charge pump A4VG125 F02

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

Hydraulic Pump Rexroth charge pump A4VG125 F02

Product Overview

Rexroth A4VG125 F02 charge pump is an integrated auxiliary hydraulic pump, matched for A4VG125 closed-circuit Hydraulic piston pump. It is an essential component inside heavy-duty hydraulic system for hydrostatic transmission Machine.

This charge pump works together with the main Hydraulic piston pump. It supplements leaked hydraulic oil, maintains stable low pre-charge pressure in the closed loop, and provides pilot control oil for the pump regulator. It stabilizes the working state of the whole hydraulic system, prevents cavitation damage and protects the core hydraulic parts of engineering Machine. Compact structure, installed inside the main pump assembly, easy to maintain and replace.

Technical Specifications

‑ Model: Rexroth charge pump A4VG125 F02

‑ Product Type: Auxiliary gear hydraulic pump for A4VG125 Hydraulic piston pump

‑ Application: Oil replenishment & pilot oil supply for closed-loop hydraulic system and mobile Machine

‑ Matching Main Pump: A4VG125 series axial piston pump

‑ Charge Pressure: 25 ~35 bar

‑ Working Medium: Anti-wear hydraulic mineral oil

‑ Operating Temperature: -20℃ ~ +80℃

‑ Material: Alloy steel gear, cast housing

‑ Key Features: Stable charge pressure, low noise, high volumetric efficiency, durable, supports continuous heavy-duty running of hydraulic system and Machine

Working Principle

When the Machine is operating, the main A4VG125 Hydraulic piston pump drives this built-in charge hydraulic pump synchronously. The charge pump draws oil from the tank and feeds pressurized oil into the closed hydraulic circuit.

It compensates internal volume loss caused by gap leakage of piston and valve plate inside the hydraulic system. It also supplies control oil for the pump’s proportional/ hydraulic regulator. The built-in relief valve limits excessive charge pressure. Sufficient replenishment pressure eliminates vacuum and cavitation risk of the main pump, ensuring stable and reversible flow output of the whole Machine.

When the charge pump wears after long service, users can replace this independent charge pump assembly without changing the entire main Hydraulic piston pump, which greatly cuts maintenance cost and downtime of the hydraulic system.

Core Advantages

1. Special auxiliary hydraulic pump for A4VG125 Hydraulic piston pump, maintains constant charge pressure for closed-loop hydraulic system, avoids cavitation failure for heavy-duty Machine.

2. Dual functions: oil replenishment + pilot control oil supply, simplifies the layout of the hydraulic system.

3. Precision alloy gear structure, small internal leakage, stable performance under continuous vibration of mobile Machine.

4. Quick replacement design, convenient on-site maintenance, reduce equipment stop time.

5. Strict dimension interchangeability, fits original or replacement A4VG125 main pump assembly for hydraulic system.

Application Range

Rexroth A4VG125 F02 charge pump is widely used as auxiliary hydraulic pump for A4VG125 Hydraulic piston pump in closed-loop hydraulic system of concrete mixer trucks, wheel loaders, road rollers and other mobile engineering Machine. Popular for hydraulic repair shops, OEM manufacturers and global spare parts distributors.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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4 year

Address: Ningbo, China

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

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