A2FE28/61W-VAL100 A2FE Series Fixed Plug-in Axial Piston Motor Pump

As a reliable China factory manufacturer and professional supplier of high-pressure industrial hydraulic piston components, Hengmeisi specializes in the R&D, production and customization of high-precision A2FE28/61W-VAL100 A2FE Series Fixed Plug-in Axial Piston Motor Pump is a mainstream heavy-duty fixed displacement model widely used in engineering machinery and mining equipment. Adopting the advanced 61-series oblique shaft tapered piston structure, the A2FE28/61W-VAL100 breaks the limitations of traditional hydraulic motors in installation space and pressure resistance, supporting both open and closed circuit hydraulic transmission. With sturdy integral structure, ultra-high pressure resistance and stable low-pulsation operation, this plug-in piston pump motor can adapt to long-term heavy-load cyclic working conditions and maintain consistent high-efficiency output.

Different from ordinary external-installed hydraulic motors, the A2FE28/61W-VAL100 A2FE Series Fixed Plug-in Axial Piston Motor Pump features a unique central grooved flange design, which can be directly integrated and installed inside mechanical gearboxes, greatly saving equipment assembly space and simplifying pipeline layout. It effectively solves the common problems of large volume, inconvenient installation and poor pressure resistance of traditional hydraulic drive components. All core components of the A2FE28/61W-VAL100 are forged from high-strength alloy materials and processed through precision grinding and vacuum heat treatment. Each finished product undergoes strict high-pressure impact testing, full-load aging testing and sealing durability testing before delivery, ensuring full compatibility and interchangeability with original imported Rexroth products, helping global customers reduce equipment replacement costs and improve operational stability.

Highlighted Product Core Strengths

1. Plug-in Integrated Structure, Space-Saving Installation

The biggest structural advantage of the A2FE28/61W-VAL100 piston motor pump is its dedicated plug-in integrated design. Equipped with a specially grooved central mounting flange, the whole unit can be directly embedded into the internal space of mechanical gearboxes without additional external fixing brackets. Compared with conventional split hydraulic motors, it effectively reduces the overall occupied space of the hydraulic system, simplifies the equipment assembly process, and avoids vibration loosening caused by external installation. The compact and integrated structural design makes the A2FE28/61W-VAL100 more adaptable to compact engineering equipment and modular hydraulic stations.

2. Ultra-high Pressure Resistance, Heavy-load Adaptability

Optimized with 61-series upgraded internal structure, the A2FE28/61W-VAL100 A2FE Series Fixed Plug-in Axial Piston Motor Pump has excellent extreme pressure resistance performance. Its rated working pressure reaches 400bar, and the instantaneous peak pressure can stably reach 450bar, which far exceeds the pressure bearing limit of ordinary hydraulic motors. The unique oblique shaft tapered piston transmission structure makes the internal force distribution more uniform, which can effectively resist frequent hydraulic impact and heavy-load torque impact. It will not produce structural deformation, internal leakage or pressure attenuation during long-term high-pressure operation, fully meeting the extreme working condition requirements of mining machinery, drilling equipment and heavy engineering machinery.

3. High Torque & Stable Transmission Performance

The A2FE28/61W-VAL100 adopts a precision circumferential piston arrangement and spherical self-aligning oil distribution system. The output torque increases stably with the pressure difference between the high-pressure side and low-pressure side of the system, realizing high-torque stable output under low-speed and heavy-load conditions. The internal flow channel is optimized and polished to reduce flow pulsation and transmission resistance, ensuring smooth and jitter-free operation of mechanical equipment. Whether in low-speed crawling operation or high-speed continuous transmission, the A2FE28/61W-VAL100 can maintain stable power output and consistent transmission efficiency, improving the overall working efficiency of hydraulic equipment.

4. Full Interchangeability & Low Maintenance Cost

The A2FE28/61W-VAL100 fully replicates the original Rexroth A2FE series dimensional parameters, installation standards and internal assembly specifications, realizing 100% interchangeability with imported products. Customers can directly replace the old and damaged original motors without modifying equipment structures, pipelines and control systems, which greatly shortens equipment downtime. All wearing parts such as pistons, distribution plates and sealing assemblies adopt standardized universal specifications, with low replacement cost and strong compatibility. The simple and reliable mechanical structure avoids frequent failures of complex electronic control components, realizing long-term trouble-free operation of industrial equipment.

Professional Model Code Analysis

The coding rule of A2FE28/61W-VAL100 conforms to Rexroth A2FE series international unified standard. Each independent code segment accurately defines the product type, displacement grade, structural version, installation form and performance configuration, helping customers quickly verify product matching suitability:

Internal Structure & Working Principle

The A2FE28/61W-VAL100 axial piston motor pump adopts a mature and upgraded oblique shaft fixed displacement structure, consisting of tapered piston assembly, high-strength cylinder block, spherical self-aligning oil distribution plate, oblique shaft transmission mechanism, integrated flange shell and multi-layer high-pressure sealing system. The overall structure is compact, sturdy and highly integrated, with outstanding pressure resistance and operational stability:

1. Tapered Piston Transmission Assembly: Different from ordinary straight piston structures, the A2FE28/61W-VAL100 adopts tapered piston design, which has stronger structural rigidity and pressure bearing capacity. The circumferentially arranged pistons cooperate with the oblique shaft to convert hydraulic pressure into mechanical torque stably, realizing efficient hydraulic power transmission.

2. Spherical Self-aligning Oil Distribution System: The built-in high-precision spherical oil distribution plate can automatically align with the cylinder block during high-speed and heavy-load operation, keeping the internal fitting gap uniform and stable. It effectively eliminates eccentric wear and local leakage problems, ensures continuous and stable oil suction and discharge circulation, and maintains long-term consistent volumetric efficiency.

3. Embedded Integrated Mounting Structure: The specially designed grooved flange shell realizes seamless plug-in installation with the gearbox, which fixes the whole unit firmly inside the transmission mechanism. It avoids vibration displacement and external impact damage during equipment operation, greatly improving the overall structural stability of the hydraulic drive system.

4. High-pressure Resistant Sealing Protection: Adopting imported composite high-pressure sealing materials, it is equipped with multi-channel anti-leakage structure at shaft end, flange and oil port positions. It can withstand instantaneous 450bar high-pressure impact and high-temperature hydraulic medium corrosion, effectively preventing internal oil leakage and external dust impurity infiltration.

Complete Technical Parameter Table

Industrial Application Scope

Benefiting from embedded integrated installation, ultra-high pressure resistance, high torque stability and full interchangeability, the A2FE28/61W-VAL100 plug-in piston motor pump is widely applied in heavy-duty industrial and engineering equipment requiring compact structure and extreme working condition resistance:

1. Drilling & Mining Machinery: Specially used for hydraulic power drive of mining drilling rigs, underground tunneling equipment and ore conveying machinery, adapting to high-pressure, dusty and harsh mining working environments.

2. Heavy Engineering Machinery: Matched with crawler equipment, small hoisting machinery and road construction equipment, providing stable high-torque power support for mechanical walking and transmission systems.

3. Industrial Gearbox Drive System: Perfect for embedded hydraulic drive of various mechanical gearboxes, realizing compact modular power output and optimizing the overall structural design of equipment.

4. High-pressure Hydraulic Test Bench: Used as the core power component of closed-circuit hydraulic test equipment, relying on high stability and low pulsation to meet industrial high-precision testing standards.

5. Special Industrial Hydraulic Equipment: Suitable for marine auxiliary hydraulic systems, metallurgical heavy-duty transmission equipment and other high-load continuous operation scenarios, with strong environmental adaptability.