High Pressure Hydraulic Pump A4VG90EP3 main pump
Technical requirement
Precautions for assembly
(1)During the assembly process,please careful not to leave burrs on the assembly surfaceand otallow entering dust;
(2)Dust proof treatment should be applied to the exposed holes after assembly;
(3)Apply rust inhibitor to the input shaft and flange;
(4)When spraying paint,the nameplate and installation surface need to becovered to avoid painting.

Precautions for operation

(1)When transporting hydraulic pumps,do not impact strongly on the transmission shaft of the pump body;

(2)Before operation,it is necessary to exhaust through the exhaust port to fill the casing with clean hydraulic oil;

(3)When operating the hydraulic pump,be careful that the surface of the hydraulic pump assembly should not be flowed hydraulicoil and other liquids;

(4)The cleanliness of thehydraulic oil should meet NAS level 9.

Typical Application Fields for A4VG90EP3 Hydraulic Components

A4VG90EP3 is a hydraulic component from the A4VG series by Rexroth. Based on its product characteristics and common industry application scenarios, it is mainly used in industrial and engineering machinery fields that require high-pressure, large-flow hydraulic power. Its application scenarios can be summarized as follows:

Core Power Systems for Engineering Machinery

Concrete Mixer Trucks: As a key component of the hydraulic system driving the mixing drum, it provides continuous power to ensure uniform mixing of concrete during transportation.

Heavy-Duty Dump Trucks: Used to control the hydraulic circuit of the lifting mechanism, enabling smooth lifting and lowering of the truck bed, suitable for heavy-duty transportation scenarios in mines and construction.

Hydraulic Excavators: Drives the complex actions of the boom, bucket arm, and bucket, meeting the high-precision power control requirements of excavation operations.

Drive for Industrial Hydraulic Equipment

Metallurgical Machinery: In equipment such as rolling mills and continuous casting machines, it serves as the main hydraulic pump, providing stable pressure and flow output to support continuous operation under high temperatures and heavy loads.

Marine and Offshore Engineering: Used for hydraulic drive of steering gear systems, anchor winches, and deck machinery, adapting to the high reliability requirements of marine environments.

Large Injection Molding Machines: Controls critical actions such as clamping and injection, achieving precise pressure and speed regulation to enhance the stability of molding processes.

Special Vehicles and Equipment

Fire Engines: Drives emergency rescue equipment such as aerial ladders and pumps, ensuring quick response and safe operation in complex working conditions.

Railway Engineering Machinery: Such as tamping machines and track laying machines, serving as the hydraulic power source for railway maintenance operations, meeting the stringent environmental requirements of railways.

Agricultural and Mining Machinery

Combine Harvesters: Controls cutting and threshing operations, improving agricultural production efficiency.

Mining Crushers: Drives the hydraulic systems of crushing hammers and screening equipment, adapting to the harsh working environment of mines with high dust and impact.

Performance Advantages and Matching Scenario Analysis of A4VG90EP3

A4VG90EP3, as a representative model of Rexroth's high-pressure piston pump series, has design characteristics that determine its irreplaceability in specific scenarios:

High-pressure Characteristics: With a rated working pressure of up to 35MPa, it is suitable for heavy-duty equipment requiring high-power output, such as mining machinery and metallurgical presses.

Variable Adjustment Function: Through the EP3 electric control proportional valve, it achieves flow adjustment without stages, meeting the needs of complex operations in engineering machinery, such as the composite action control of excavators.

Anti-pollution Capability: With high-precision filtration design, it adapts to the harsh working environment of engineering machinery in the field, reducing the risk of failure due to oil contamination.

Selection Suggestions and Precautions

Matching Work Conditions: Choose the appropriate model based on the actual working pressure, flow requirements, and ambient temperature of the equipment, avoiding energy waste or overload damage caused by "oversized engines for small tasks."

Maintenance and Accessories: Preferably choose original accessories (such as Rexroth original oil seals, pistons, etc.) to ensure long-term stable operation of the hydraulic system and reduce downtime for maintenance.

System Compatibility: Reasonably match with auxiliary components such as hydraulic tanks, filters, and cooling systems to avoid excessive back pressure or rapid oil temperature rise affecting the pump's service life.

A4VG90EP3, with its high reliability and adaptability, has become a core component of hydraulic systems for heavy machinery, serving key industries such as construction, mining, and industrial manufacturing, and is an important guarantee for efficient and precise operation of large equipment.