Rexroth A6VM variable Plunger Motor

REXROTH Rexroth A6VM variable Plunger Motor specifications and typical application analysis

1. Core specifications
2. Infrastructure characteristics
   Type: Oblique shaft type axial plunger variable motor, with curved shaft design, equipped with axial tapered plunger rotating assembly.
   Circuit adaptability: Supports open circuit and closed circuit hydrostatic transmission to meet different system requirements.
3. Performance parameters
   Parameter specification range
   Displacement (Vg） 28、55、80、107、140、160、200、250、355、500、1000 cm3/rev (multiple gears optional)
   Nominal pressure (pdom) 400 bar (some specifications are 350 bar, such as 250-1000 series)
   Peak pressure (pmax) 450 bar (some specifications are 400 bar)
   Speed range-at maximum displacement (Vg max): The rated speed (ndom) reaches 5550 rpm (such as 28 specifications), which is reduced step by step.
   -When less than the maximum displacement (Vg <Vg x): the maximum speed (nmax) can reach 10450 rpm (such as 28 specifications).
   The torque output is at nominal pressure and maximum displacement, and the torque range ranges from 179 Nm (28 specifications) to 5571 Nm (1000 specifications).
   Weight 16 kg (28 specifications) to 430 kg (1000 specifications)
4. Special requirements
   Hydraulic oil selection: The viscosity grade (such as VG46 or VG68) needs to be selected according to the ambient temperature and operating temperature to ensure that it is in the optimal viscosity range (shaded area).
   Temperature limit: The oil discharge temperature of the shell shall not exceed 115°C (some specifications are 90°C), and the temperature must be controlled by flushing or oil replenishment valve.
   Installation requirements: The motor housing needs to be filled with hydraulic oil before starting, and it must be continuously filled during operation.
5. Typical application scenarios
6. Construction machinery
   Walking system: The walking mechanism that drives excavators, loaders, and bulldozers, providing high torque and precise speed control.
   Rotation and propulsion: It is used for the rotation and propulsion system of cranes and concrete pump trucks to achieve efficient operation.
7. Agricultural machinery
   Power transmission: adapt to the flipping, bulldozing, harvesting and transportation operations of tractors and combine harvesters to improve operational efficiency.
   Precise control: In seeders and irrigation equipment, precise adjustment of flow and pressure is achieved through variable control.
8. Transportation and logistics
   Material handling: the lifting and handling system that drives forklifts and AGV (automatic guided vehicles) to ensure the precise positioning of the goods.
   Lifting equipment: it provides stable power in port cranes and tower cranes to support the lifting and movement of heavy objects.
9. Industry and manufacturing
   Mold and stamping: drive the press and mold adjustment system to achieve high-precision stamping, forming and locking control.
   Automated production line: hydraulic actuators integrated in robots and CNC machine tools provide dynamic response and load adaptability.
10. Special field
    Aerospace: Used in aircraft landing gear and helicopter rotor control systems to meet the needs of high reliability and lightweight.
    Shipbuilding industry: drives ship thrusters and steering gear systems to adapt to the harsh working conditions of the marine environment.
    Metallurgy and petroleum: In the hydraulic system of steel rolling mills and drilling platforms, it provides high torque and high pressure resistance.
11. Technical advantages and future trends
    Control flexibility: the displacement is adjusted by hydraulic or electronic control to achieve stepless variable speed and torque optimization.
    Energy efficiency improvement: combined with a closed-loop control system, energy consumption is reduced and the overall efficiency of the equipment is improved.
    Intelligent integration: combined with the Internet of Things (IoT) and predictive maintenance technology, remote monitoring and fault early warning are realized.
    Environmental protection adaptation: Support environmentally friendly hydraulic fluids (such as HEES and HETG) to meet the requirements of sustainable development.
    Summary: Rexroth A6VM variable plunger motor, with its wide displacement range, high pressure bearing capacity and high speed characteristics, has become a high-performance solution in the field of industrial hydraulics, and is widely used in multi-scenario needs from traditional machinery to intelligent equipment.