A2FM90/61W-VBB010 A2FM Series High Pressure Fixed Axial Piston Motor

Hengmeisi is a professional factory-focused supplier dedicated to the R&D, manufacturing and upgrade of high-pressure interchangeable hydraulic piston components. The quality A2FM90/61W-VBB010 A2FM Series High Pressure Fixed Axial Piston Motor stands out as a mainstream large-displacement fixed motor within the A2FM product line, widely deployed in heavy-duty mobile equipment and industrial hydraulic transmission systems. Equipped with an upgraded 61-series bent-axis tapered piston structure, this A2FM motor boasts outstanding pressure resistance and superior power density, enabling steady and reliable operation for both open and closed circuit hydraulic systems. Unlike medium and small-displacement hydraulic motors that struggle with insufficient torque under heavy loads, this model maintains stable high-torque output in low-speed heavy-cycle working scenarios, with a robust mechanical structure and excellent anti-fatigue performance to adapt to long-duration industrial continuous operation.

The durable A2FM90/61W-VBB010 A2FM Series High Pressure Fixed Axial Piston Motor effectively overcomes common operational flaws of traditional hydraulic motors, including poor pressure bearing capacity, obvious speed jitter and frequent hydraulic oil leakage under heavy-load conditions. Reinforced with an integral high-rigidity shell and precision-matched internal components, this motor can efficiently withstand intense hydraulic impact and mechanical vibration generated during high-power operation. Every finished A2FM90/61W-VBB010 unit undergoes strict standardized factory tests, including long-term full-load aging assessment, ultra-high pressure impact detection and sealing durability verification. It achieves 100% structural dimensional consistency and functional equivalence with original Rexroth A2FM series motors, allowing global end-users and distributors to replace old or faulty units directly without any equipment modification, effectively cutting down equipment procurement and daily operating costs.

Core Product Performance Advantages

1. Large Displacement & High Power Density

Designed with a 90ml/r large displacement specification, the A2FM90/61W-VBB010 axial piston motor generates robust and consistent torque output, perfectly catering to the high-power operation needs of heavy engineering machinery and industrial hydraulic equipment. Compared with conventional small and medium-displacement hydraulic motors, this upgraded model features higher power density and a compact integrated structural layout, realizing maximum hydraulic power conversion within limited installation space. Its optimized power-to-weight ratio minimizes the overall volume and weight of the matched hydraulic system, helping streamline equipment structural design while ensuring stable and powerful driving performance for various heavy-load devices.

2. Ultra-high Pressure Resistance & Strong Working Stability

Optimized with the latest 61-series internal pressure-resistant architecture, the A2FM90/61W-VBB010 supports a 400bar rated working pressure and can withstand instantaneous peak pressure up to 450bar, fully meeting the extreme working condition requirements of heavy industrial and engineering machinery. The unique bent-axis transmission design ensures uniform stress distribution across all internal components, eliminating local stress concentration and structural deformation risks. Even under frequent high-pressure impact and prolonged full-load continuous operation, the motor retains stable flow and pressure output without obvious performance attenuation, featuring ultra-low failure probability and exceptional long-term operational stability.

3. Low-speed High-torque & Smooth Operation

The A2FM90/61W-VBB010 is fitted with a precision circumferential tapered piston array and high-precision spherical self-aligning oil distribution mechanism. Its output torque increases proportionally with system pressure differentials, delivering steady high-torque performance at low speeds without stalling, jittering or power fluctuation. The internally polished streamlined flow channel greatly reduces hydraulic fluid pulsation and mechanical transmission resistance, enabling ultra-smooth operation of matched driving equipment. Whether operating in low-speed creeping mode or medium-high speed continuous transmission state, the motor maintains stable and efficient power conversion, comprehensively improving the overall operational efficiency and working precision of hydraulic equipment systems.

4. Full Interchangeability & Excellent Durability

Fully engineered to match original Rexroth technical standards, the A2FM90/61W-VBB010 replicates all original installation dimensions, shaft specifications, oil port layouts and internal assembly parameters, achieving complete functional and structural interchangeability with imported original parts. Customers can complete direct replacement and installation without adjusting equipment pipelines, fixing brackets or hydraulic control systems, greatly shortening equipment downtime and production interruption. Core components including pistons, cylinder blocks and oil distribution plates are manufactured from high-strength wear-resistant alloy materials, processed via vacuum heat treatment and ultra-precision grinding techniques. Equipped with premium high-pressure and high-temperature resistant sealing assemblies, this motor adapts to various harsh industrial environments and delivers extended service life.

Professional Model Code Interpretation

The coding rules of the A2FM90/61W-VBB010 comply with the global unified technical specifications of Rexroth A2FM series axial piston motors. Each independent code segment accurately defines the product series attribute, displacement grade, structural iteration version, installation mode and sealing configuration, enabling customers to quickly verify product compatibility and equipment matching suitability:

Internal Structure & Working Principle

The A2FM90/61W-VBB010 high-pressure axial piston motor adopts a mature and reliable bent-axis fixed displacement structure. Its overall composition includes high-precision tapered piston assemblies, high-rigidity alloy cylinder blocks, spherical self-aligning oil distribution plates, bent-axis transmission mechanisms, integral reinforced flange shells and multi-layer composite high-pressure sealing systems. Featuring compact structure, high structural strength and outstanding operational reliability, this motor can stably adapt to various extreme heavy-load and long-cycle industrial working conditions:

1. Tapered Piston Transmission Assembly: Different from conventional straight piston structures with limited pressure resistance, the A2FM90/61W-VBB010 adopts high-precision tapered pistons with enhanced structural rigidity and load-bearing capacity. Multiple groups of pistons are evenly arranged circumferentially, cooperating with the bent-axis transmission mechanism to steadily convert hydraulic pressure energy into mechanical torque, realizing high-efficiency and stable power transmission output.

2. Spherical Self-aligning Oil Distribution System: The built-in high-precision spherical oil distribution plate features automatic alignment with the cylinder block during high-speed and heavy-load operation, maintaining uniform and stable matching gaps between internal components. This design effectively avoids eccentric wear, local hydraulic leakage and system pressure fluctuation, ensuring continuous and stable hydraulic oil circulation and long-term consistent volumetric efficiency of the motor.

3. Reinforced Integral Flange Structure: The one-piece cast flange shell greatly enhances the overall structural stability of the motor. It can effectively resist external mechanical vibration and impact during long-term high-power equipment operation, preventing installation loosening and displacement deviation. This structural advantage ensures firm installation and stable continuous operation of the motor in various heavy-duty mechanical equipment.

4. Multi-channel High-pressure Sealing System: Adopting imported composite sealing materials with excellent resistance to high pressure, high temperature and hydraulic oil corrosion, the motor is equipped with multi-layer anti-leakage structures at the shaft end, flange joint and oil port positions. It can stably resist instantaneous ultra-high pressure impact, prevent internal hydraulic oil leakage and external dust and impurity infiltration, and fully protect internal precision transmission components.

Complete Technical Parameter Table

Technical Parameters

Industrial Application Scope

With superior large-displacement power output, excellent high-pressure resistance, stable high-torque performance and full interchangeability with original parts, the A2FM90/61W-VBB010 axial piston motor is widely applied in various heavy-duty mobile machinery and industrial hydraulic equipment that requires stable and high-power hydraulic driving:

1. Engineering Construction Machinery: Ideal for crawler excavators, road rollers, asphalt pavers and various hoisting machinery, providing stable high-torque power support for equipment walking systems and core hydraulic driving modules.

2. Mining & Drilling Equipment: Perfectly matched with mining drilling rigs, underground tunneling machinery and ore conveying equipment, adapting to harsh mining working environments characterized by high pressure, heavy dust and continuous operation with outstanding anti-impact and anti-fatigue performance.

3. Marine & Offshore Machinery: Suitable for marine deck hydraulic devices, offshore auxiliary driving systems and ship hydraulic transmission equipment, featuring strong environmental adaptability and excellent corrosion resistance to adapt to complex marine working conditions.

4. Heavy Industrial Hydraulic Station: Served as the core power driving component for high-power open and closed circuit hydraulic systems, widely used in metallurgical processing equipment, forging machinery and automated heavy-duty industrial production lines.

5. Special Mobile Equipment: Extensively applicable to environmental sanitation machinery, large agricultural equipment and logistics handling machinery, fully meeting the long-cycle uninterrupted operation requirements of diverse mobile hydraulic systems.