Plunger Pump A6V Series A6V55MA2FZ2

Hengmeisi, a reputable China factory and reliable supplier specializing in high-performance hydraulic components, independently develops and produces the Plunger Pump A6V Series A6V55MA2FZ2 to solve the pain points of low efficiency, easy wear and poor stability of traditional hydraulic pumps. The Plunger Pump A6V Series A6V55MA2FZ2 is a classic bent-axis variable displacement plunger pump in the A6V series, which abandons the defective design of traditional fixed-displacement hydraulic pumps and realizes flexible adjustment of flow and torque through precision bent-axis mechanical control structure. This product strictly follows international hydraulic industry standards in design and production, with standardized overall dimensions and interface specifications, realizing full compatibility with mainstream equipment systems on the market, bringing great convenience for equipment assembly and later maintenance and replacement.

Different from ordinary gear pumps and vane pumps, the A6V55MA2FZ2 plunger pump relies on high-precision plunger reciprocating motion to complete hydraulic oil delivery. The overall structure is compact with small inertia and sensitive response, which can quickly respond to system control instructions and realize real-time adjustment of operating speed and output torque. The product is rated for 250bar continuous working pressure and can withstand 280bar instantaneous peak pressure, which can stably cope with various high-load and high-strength continuous working scenarios. In terms of working efficiency, the volumetric efficiency of the Plunger Pump A6V Series A6V55MA2FZ2 is as high as 94%, which greatly reduces hydraulic power loss, effectively lowers the energy consumption of mechanical equipment, and improves the overall operating economy of the equipment.

In addition, this A6V series plunger pump has excellent anti-fatigue and anti-pollution performance. The internal core components are made of high-strength alloy materials, which have super wear resistance and pressure resistance after special heat treatment process. The matching imported composite sealing parts can adapt to complex temperature environments and harsh working conditions such as dust and oil pollution on construction sites. Whether it is low-speed high-torque heavy load operation or high-speed light load cycle work, the A6V55MA2FZ2 can maintain consistent and stable working state, without frequent failure and shutdown maintenance, greatly reducing the later operation and maintenance cost of equipment.

Key Product Advantages

1. Advanced Bent-axis Variable Displacement Technology

The core advantage of the Plunger Pump A6V Series A6V55MA2FZ2 lies in its mature bent-axis variable displacement design. The precision ground bent-axis swashplate mechanism can realize stepless adjustment of pump displacement, freely switch the output state of flow and torque, and accurately match the power demand of different working stages of mechanical equipment. Compared with fixed-displacement hydraulic pumps that can only output fixed power, this variable structure effectively avoids energy waste caused by power mismatch. The internal plunger assembly is made of high-quality 40CrNiMoA alloy steel, after carburizing quenching and precision grinding treatment, the hardness reaches HRC65, which can resist long-term friction and impact wear, and ensure long-term stable operation of the pump body in complex hydraulic oil environments.

2. Super High Pressure Resistance and Stable Load Capacity

The A6V55MA2FZ2 hydraulic plunger pump is designed for heavy-duty working conditions, with excellent pressure resistance and load-bearing capacity. The continuous working pressure can reach 250bar, and the instantaneous peak pressure can reach 280bar, which can fully meet the high-pressure operation demand of industrial and construction machinery. The built-in high-strength tapered roller bearings can bear huge radial and axial composite loads, support continuous stable operation of the pump body at a maximum speed of 3000r/min, and will not produce deformation, jitter and other failures under long-term high-load operation. At the same time, the product is equipped with an integrated anti-pollution protection structure, which can filter tiny particulate impurities in hydraulic oil, prevent internal component blockage and abrasive wear, and effectively extend the service life of the equipment.

3. Flexible Control Mode and Strong Compatibility

This A6V series plunger pump adopts mature MA mechanical control mode, with simple and sensitive control logic, stable and reliable action, and low failure rate of the control system. The overall dimensional parameters and installation interface of the Plunger Pump A6V Series A6V55MA2FZ2 are fully consistent with international standard specifications, realizing complete interchangeability with mainstream similar products on the market. Users can directly replace old equipment without modifying the original hydraulic system and equipment structure, which saves replacement time and cost. In terms of sealing configuration, it supports NBR and FKM dual sealing material options, adapting to the working temperature range of -40℃ to +115℃, and can operate stably in extreme cold, high temperature and other harsh environments, with strong environmental adaptability.

4. Compact Structure and High Power Density

The A6V55MA2FZ2 abandons the bulky and redundant structural design of traditional high-pressure pumps, and realizes high power output with small volume and light weight. The optimized internal flow channel design reduces hydraulic pressure loss and operating noise, making the equipment run more quietly and smoothly. The high power-to-weight ratio enables the pump body to provide super high torque output while occupying a small installation space, which is very suitable for space-constrained mobile mechanical equipment such as compact excavators and mobile cranes. The lightweight design also reduces the overall self-weight of the equipment, helps to improve the fuel economy of mobile machinery, and reduces mechanical structural loss.

Model Code Explanation

Each code of A6V55MA2FZ2 corresponds to the exclusive structural parameter and performance configuration of the product, with clear classification and intuitive parameter identification, which is convenient for users to quickly select and match models:

A6V: Represents bent-axis variable displacement plunger pump series, specially used for high-torque variable-speed hydraulic systems, with higher pressure resistance and stability than swashplate pump series;

55: Indicates the nominal displacement of the pump is 55mL/r, which belongs to medium displacement specification, balancing flow output and torque performance, suitable for most medium and heavy-duty hydraulic equipment;

MA: Mechanical variable displacement control mode, realizing manual and automatic stepless adjustment of displacement, flexible and convenient operation;

2: Standard industrial flange installation specification, conforming to ISO 3019/2 international standard, with high installation accuracy and strong versatility;

F: Splined shaft structure design, with high torque transmission efficiency and strong anti-slip ability, ensuring stable power output;

Z2: Reinforced bearing and high-pressure sealing configuration, enhancing the durability and leakage resistance of the pump body under long-term high-pressure operation.

Product Structure and Material Configuration

1. Core Structural Design

The overall structure of the A6V55MA2FZ2 is composed of precision machined cylinder block, plunger assembly, bent-axis swashplate, bearing system and sealing system. All internal matching parts are processed by high-precision CNC machine tools, with ultra-small matching gaps, which effectively reduces internal oil leakage, and the internal leakage rate is controlled below 1.5%. The optimized fluid flow path eliminates turbulent flow and pressure loss, ensuring uniform and stable hydraulic oil delivery and improving the overall working efficiency of the pump.

2. High-quality Structural Materials

In order to adapt to long-term harsh working conditions, all core load-bearing and wear-resistant parts of the pump body adopt high-strength wear-resistant materials. The cylinder block and plunger are made of 40CrNiMoA high-grade alloy steel, which has super hardness and toughness after heat treatment; the swashplate surface is coated with anti-wear and anti-corrosion coating to reduce friction loss; the sealing system adopts imported PTFE composite seals, which can withstand 400bar instantaneous pressure, with excellent high temperature resistance and aging resistance; the bearing group adopts heavy-duty tapered roller bearings, with a design service life of more than 16000 hours under rated working conditions.

3. Independent Anti-pollution Protection System

Different from ordinary hydraulic pumps without protection structure, the Plunger Pump A6V Series A6V55MA2FZ2 is equipped with a built-in precision anti-pollution filter element, which can effectively intercept metal particles, dust and other impurities in hydraulic oil, avoid abrasive wear and jamming of precision parts such as plungers and swashplates, and greatly improve the anti-fouling ability and service stability of the product. This design is especially suitable for construction sites, mining sites and other working environments with poor hydraulic oil cleanliness.

Application Scenarios

With its high efficiency, high stability and strong durability, the A6V55MA2FZ2 hydraulic plunger pump is widely used in various medium and heavy-duty hydraulic equipment, covering construction machinery, industrial equipment, marine engineering, agricultural machinery and many other fields. In construction machinery, it is mainly used for excavator rotary drive, crane winch power system, road roller and loader hydraulic power unit; in industrial fields, it is suitable for high-pressure hydraulic test benches, metal forming machinery and large-scale hydraulic power stations; in marine and offshore engineering, it can adapt to humid and salt-spray working environments and provide stable hydraulic power for marine auxiliary equipment; in agricultural machinery, it is matched with large-scale agricultural hydraulic transmission equipment to meet the power demand of field operation.

As a high-quality alternative and original supporting hydraulic part, the Plunger Pump A6V Series A6V55MA2FZ2 provided by Hengmeisi has strict quality control from raw material selection, precision processing to finished product testing. All products have passed pressure resistance, durability and stability tests, with reliable quality and cost-effective price. It is an ideal choice for global buyers to purchase high-quality hydraulic plunger pumps.