Orbital Motors, as a kind of unique hydraulic motors, have been widely used in the fields of construction machinery, agriculture, industry and so on by virtue of their excellent performance and various types. In this article, we will analyze the types of Orbital Motors in detail from the dimensions of application scenarios and industry demands, output characteristics and control methods.
1. Classified by application scenarios and industry needs
(1) Specialized for construction machinery
Orbital Motors for construction machinery is designed for complex working conditions, with two core advantages: anti-shock and environmental adaptation.
Anti-shock design: Built-in overload protection valve is automatically triggered when the system pressure exceeds 1.5 times the rated pressure, protecting the motor from damage. Wear-resistant coating (e.g. tungsten carbide-chromium) is adopted on the distributor disk to effectively resist the impact brought by frequent direction change and prolong the service life.
Environmental suitability: High sealing grade, completely preventing dust from entering and withstanding short-term immersion, adapting to the harsh environment of mines and construction sites. By adding antifreeze type hydraulic oil, it can work stably under -40℃ low temperature to meet the operational needs of polar or high-cold areas.
Typical applications: excavator slewing drive, loader traveling mechanism, drilling rig rotary table, etc.
(2) Lightweight agricultural machinery
Orbital Motors, the lightweight model for agricultural machinery, focuses on integration and low-maintenance requirements to help improve operational efficiency.
Integrated design: The motor is directly integrated with the hub or drive shaft, eliminating the traditional gearbox, reducing overall weight by 40% and increasing transmission efficiency by 15%.
Low-maintenance design: Adoption of self-lubricating bearings extends the lubrication cycle to 2,000 hours; optimized sealing structure allows oil cleanliness to reach ISO 19/14, reducing the impact of field dust on the system.
Typical applications: harvester cutter drives, planter seeders, tractor power take-off systems.
(3) Industrial automation precision type
Industrial automation precision type Orbital Motors meets the demand for high precision with servo control and low pulsation technology.
Servo control adaptation: Built-in speed or torque encoder for closed-loop control, positioning accuracy up to ±0.5°, support for PLC/CNC system seamless integration.
Typical applications: CNC machine tool indexing table, robot joint drive, precision rotary table.
(4) Explosion-proof and special environment type
Explosion-proof and special environment type Orbital Motors are designed for hazardous scenarios and extreme conditions.
Explosion-proof certification: the shell adopts aluminum alloy casting process, surface resistance is less than 10Ω, to prevent static sparks, suitable for petrochemical, gas mine and other flammable and explosive environments.
Extreme working conditions adaptable: deep-sea type adopts titanium alloy shell with pressure resistance of 60MPa, used for underwater robot propulsion; high-temperature type adopts ceramic coating with temperature resistance of 150℃, suitable for steel mill ladle turning mechanism.
2. Classification by output characteristics and control mode
(1) Quantitative Orbital Motors (Constant Displacement Type)
Quantitative Orbital Motors realize simple and efficient energy conversion with fixed displacement.
Work characteristics: fixed displacement (such as OMT315 series displacement is 315ml/r), output speed is proportional to the input flow, simple structure, cost is 20% lower than variable type.
Applicable scenarios: stable load, no need for speed regulation, such as conveyor belt drive, hydraulic pumping stations, small winches.
(2) Variable-variable Orbital Motors (Continuously Variable Type)
Variable-variable Orbital Motors can realize stepless speed change by adjusting the displacement to adapt to complex working conditions.
Speed regulation principle: by changing the rotor eccentricity or the opening of the flow distribution window, it realizes 1:3 stepless adjustment of the displacement.
Technical advantage: reduce the displacement to increase the speed at high speed, increase the displacement to output large torque at low speed, suitable for working conditions with frequent load changes.
Typical applications: loader working device, crane luffing mechanism, concrete mixer truck.
(3) Dual-speed Orbital Motors (high and low speed switching type)
Dual-speed Orbital Motors realize high and low speed switching through solenoid reversing valves, taking into account both efficiency and output.
Control logic: high speed operation during light load, and automatic switching to low speed and high torque mode during heavy load.
Typical applications: crane winch mechanism (fast lifting and lowering with no load, low speed steady lifting with heavy load), injection molding machine mold closing device (fast mold closing + low pressure protection + high pressure mold locking).
With its diverse range of types and innovative technologies, Orbital Motors is driving efficiency and technological innovation in the fields of construction machinery, agriculture, industry and specialized environments. From special models for construction machinery with impact-resistant design, to lightweight, precision-controlled industrial automation models, to special models for extreme environments, Orbital Motors meets the core needs of different industries with flexible and diverse solutions.
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