PLUG-IN AXIAL PISTON FIXED MOTOR, BOSCH REXROTH A2FE/A2FEM
PLUG-IN SWASH-PLATE MOTOR | FP TRASMISSIONI
Introduction to the plug-in swash-plate axial piston motor
The plug-in swash-plate motor represents the ultimate evolution in terms of power density and space optimization in the applied hydraulics sector. This specific configuration, often defined as “plug-in”, has been engineered to respond to a precise challenge: providing the force of a standard axial piston motor while drastically reducing the total length of the transmission unit.
Choosing a plug-in swash-plate motor means adopting a successful technology that allows the motor body to be recessed within the gearbox housing. This integration is not only aesthetic, but structural, making the entire traction group extremely protected and compact.
At FP Trasmissioni, we consider this variant the number 1 choice for manufacturers of tracked and wheeled machinery where every centimeter saved translates into greater ground clearance or a narrower and more versatile track. It is a valuable solution that elevates mechanical design standards.
Technical features of the plug-in design
The technological heart of the plug-in swash-plate motor lies in its recessed mounting flange. Unlike standard motors, where the body protrudes completely from the gearbox, here a consistent part of the unit “sinks” into the mechanical hub.
The valuable specifications include:
Reduction of Dimensions: The plug-in design allows the transmission package to be shortened, facilitating installation in narrow frames.
Mechanical Resistance: The recess in the gearbox guarantees greater stability of the motor shaft and superior protection against external impacts typical of construction sites.
High Pressures: Despite its compactness, these motors handle constant operating pressures up to 400-450 bar, guaranteeing an effective thrust in all conditions.
Swash-Plate Configuration: The axial piston system ensures very high volumetric efficiency, reducing energy waste and generated heat.
Effectiveness in travel and rotation transmissions
The use of the plug-in swash-plate motor is particularly effective in wheel drives and track drives (such as the Bonfiglioli 700C series). In these applications, the motor must deliver enormous torques to move tons of steel on steep slopes.
The robustness of this technology is a pillar of success. Being partially protected by the gearbox itself, the motor suffers less from torsional vibrations and radial loads. This translates into a longer operating life and longer maintenance intervals compared to externally flanged solutions.
Opting for a plug-in motor means optimizing the hydraulic layout of the machine: the supply ports are positioned to facilitate the passage of hoses, reducing the risk of accidental breakage due to debris or branches during field operations.
Synergy with integrated braking systems
One of the advantages of the plug-in swash-plate motor proposed by FP Trasmissioni is the possibility of integrating cartridge valves and parking brakes directly into the unit. This valuable integration eliminates the need for bulky external components.
The complete package offers:
Oil-Bath Multi-Disc Brake: Integrated into the plug-in design for a safe and automatic stop.
Counterbalance Valves: Fundamental for controlling the speed of descent or rotation without jerking.
Continuous Flushing: To keep the oil temperature constant even during the most intense work cycles.
Choosing this successful technology allows for a reduction in the number of components to be managed in the warehouse and enormously simplifies the assembly phases on the production line.
Application areas and maintenance
The plug-in swash-plate motor is the number 1 solution in sectors where robustness is fundamental:
Tracked Excavators: For undercarriage travel groups in combination with final drives.
Drilling Machines: Where space inside the tracks is extremely limited.
Compactor Rollers: For a smooth and powerful drive of the drums.
Aerial Platforms: Where the safety of the integrated brake and compactness are critical requirements.
To maintain the effectiveness of the system, maintenance must focus on fluid quality. Even if the plug-in design is protected, oil cleanliness remains the determining factor in preventing wear on the swash-plate faces. At FP Trasmissioni we support customers with original spare parts and advice to ensure that every motor continues to perform at its maximum potential.
Conclusions on the technological choice
Relying on a plug-in swash-plate motor means choosing the forefront of hydrostatic transmission. The combination of axial power and compact design makes this technology a valuable investment for any OEM machine manufacturer.
The FP Trasmissioni team is at your complete disposal to analyze your projects and recommend the most suitable displacement and plug-in configuration for your final drives. Contact us to deepen the technical specifications and discover how to improve the performance of your machinery with a successful solution.