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Orbital Hydraulic Motor

What is Orbital Hydraulic Motor

 

A orbital hydraulic motor is a type of hydraulic motor that converts hydraulic energy into mechanical energy. It is designed to provide rotary motion through the use of an orbiting rotor and a stationary housing. The hydraulic fluid is pumped into the motor through a port, which imparts force on the rotor to create rotational movement. These motors are often used in heavy-duty industrial applications, such as construction equipment, agricultural machinery, and mining equipment.

 

 
Benefits of Orbital Hydraulic Motor
 
01/

Greater power output
They have a higher power density; in comparison with the other designs. Orbital hydraulic motors have the greatest power-to-size ratios and thus provide the highest output power in the smallest sizes.

02/

Better torque
These hydraulic motorsallow for high levels of torque output to be used in applications that need heavy lifting or the production of very high rotative forces. Orbital hydraulic motors offer the benefit of transmitting low output speed for precise controlled applications or slower operation.

03/

Easy design
They are far easier to engineer into installations and to maintain than piston motors, and he found them even easier to troubleshoot. In the instance of recycling systems, pumps last longer because of their design and energy.

04/

Improved durability
Orbital hydraulic motors have better durability compared to vane motors by way of construction and number of perishable parts, ensuring durability under most operating conditions.

05/

Efficiency
Orbital hydraulic motors will deliver high efficiency in working by transforming hydraulic energy into mechanical power with negligible losses. This saves the cost of a high-quality machine and making it perform at a higher level.

06/

Reliability
A orbital hydraulic motor has a high level of reliability with fewer moving parts and an inherent robust body, going a long way toward providing stable and reliable performance.

 

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Flange Hydraulic Motor

 

Main Features

Adopting end face distribution and axial flow distribution, the structure is simple and compact, and the flow matching precision is high.

 

Using the insert stator and rotor pair, high mechanical efficiency, long life with high pressure operation.

 

The use of double-corner ball bearings, can withstand large radial and axial loads, low friction, high mechanical efficiency.

 

Advanced flow distribution mechanism design, featuring high flow matching precision and automatic wear compensation.

 

The motor can be used in series and parallel, when connected in series should be connected to the external drain.

 

Using tapered roller bearing support design, with a large radial load capacity, so that the motor can directly drive the working mechanism.

 

Types of Orbital Hydraulic Motor

 

Gear motor: In order to adapt to the forward and reverse requirements in the structure, the inlet and outlet of the gear motor is equal and symmetrical, and there is a separate oil leakage port, which can lead the oil leakage of the bearing part out of the shell. In order to reduce the starting friction moment of the motor, rolling bearings are used; The gear hydraulic motor has more teeth than the pump, also to reduce torque pulsation. Therefore, gear motors are generally used in construction machinery, agricultural machinery and mechanical equipment with low requirements for torque uniformity.

 

Vane motor: Due to the pressure oil action, the force imbalance causes the rotor to generate torque. The output torque of the vane hydraulic motor is related to the pressure difference between the displacement of the hydraulic motor and the inlet and outlet of the hydraulic motor, and its speed is determined by the flow size of the input hydraulic motor. Since hydraulic motors generally require forward and reverse, the blades of vane hydraulic motors should be placed radially.

 

Radial piston motor: It is divided into single-acting connecting rod type radial piston motor, multi-acting internal curve piston motor, plunger type high-speed hydraulic motor. Their common working principle is that when the pressure oil enters the bottom of the plunger in the cylinder body through the window of the fixed oil distribution shaft, the plunger extends outward and tightly holds against the inner wall of the stator, due to the eccentric distance between the stator and the cylinder body.At the contact between the plunger and the stator, the reaction force of the stator on the plunger can be decomposed into two divided forces.

 

Axial piston motor: In addition to the valve type distribution, other forms of axial piston pump can be used as hydraulic motors in principle, that is, axial piston pumps and axial piston motors are reversible. The working principle of the axial piston motor is that the oil distribution plate and the swashplate are fixed, and the motor shaft is connected to the cylinder block and rotates together.

 

 

Oil Leak of the Orbital Hydraulic Motor?

Shaft end oil leakage: Due to the constant friction between the oil seal and the output shaft in the daily use of the motor, it will inevitably lead to the wear of the contact surface between the oil seal and the shaft. If it exceeds a certain limit, the oil seal will lose its sealing effect and cause oil leakage. Treatment: need to replace the oil seal, if the output shaft wear serious, need to replace the output shaft at the same time.

 

Oil leakage at the cover: The "O" ring under the cover is crushed or aged and loses the sealing effect. The probability of this situation is very low. If it happens, just replace the "O" ring.

 

Oil leakage of motor crevice: The "O" ring between the motor housing and the front side plate, or between the front side plate and the stator body, or between the stator body and the rear side plate is aged or crushed. If this happens, just replace the "O" ring.

BMP Hydraulic Orbital Motor

 

How to Choose the Right Orbital Hydraulic Motor
 

Efficiency

When choosing a orbital hydraulic motor for a system, efficiency is a factor to consider. Orbital hydraulic motors are designed to operate at a very high power to size ratio. They also have the highest output torque in relation to their input force, making them ideal for applications that need to move large amounts of mass quickly.

Noise

When selecting a orbital hydraulic motor, it’s important to consider how noisy the system will be. One way to determine the right noise level is by measuring the sound from various points around the system. This will help you pinpoint the source of the problem and determine what steps need to be taken. In most cases, the main culprit of noise is the pump or other motor.

Size

Orbital hydraulic motors vary in size, depending on the fluid pressure and volume flow requirements of the system. Unlike pumps, which use valves to deliver hydraulic fluid to a motor, orbital hydraulic motors contain a series of pistons that slide laterally on a flat surface inside the housing.

Load capacity

If you have ever used a hydraulic cylinder to lift something, you know that the size of the cylinder can make all the difference in whether the load can be safely lifted or not. Choosing the right size can save you time and money by preventing a failed lift and the loss of material or equipment. In the same way, choosing the right sized orbital hydraulic motor is crucial for your application to run correctly and safely.

 

Application of Orbital Hydraulic Motor

 

Engineering machinery
Orbital hydraulic motors are widely used in various engineering machinery such as excavators, loaders, bulldozers, etc. It can accurately control the power output of the machine by controlling the flow and pressure, so that the machine can better adapt to various working conditions and improve production efficiency.

 

Wind power generation
Orbital hydraulic motors are used as driving elements for rotating blades in wind turbines. It has the characteristics of high torque output, low-speed stability and long life, which ensures the stability and reliability of the unit in complex wind environments.

 

Aerospace
In the field of aerospace, orbital hydraulic motors are used in key components such as flaps and flap bearings. Due to its light weight, small size and low noise, it can meet the high lightweight requirements of aircraft for power components to ensure the high performance, high precision and high reliability of aircraft and spacecraft.

 

Industrial Automation
Orbital hydraulic motors can be widely used in the field of industrial automation, such as machine tools, sleeving machines, wire reels, punching machines and other mechanical equipment. It can provide high-precision, high-load driving force for these mechanical equipment, making the operation of mechanical equipment more stable and efficient.

 

What are the Components of a Orbital Hydraulic Motor

 

Orbital hydraulic motor casing

The casing of a orbital hydraulic motor is made of metal material, which is used for assembling and fixing other parts, and plays the role of fixing, sealing and protecting the internal parts.

01

Bearings

The bearings of a orbital hydraulic motor are mainly used to support the rotating bearing parts inside the motor so that they can rotate smoothly and freely.

02

Gear set

The gear set in a orbital hydraulic motor usually consists of several gears, some of which are driven by hydraulic pressure and convert hydraulic energy into mechanical energy, thus realizing the rotation of the motor.

03

Hydraulic cylinder

The hydraulic cylinder is an important component in a orbital hydraulic motor, used to receive and transfer hydraulic energy to drive the motor to rotate.

04

Drive shaft

The orbital hydraulic motor drive shaft is a key component that connects the hydraulic cylinder block to the gear set and converts hydraulic pressure into rotational power for the motor by transferring hydraulic energy.

05

 

Orbital Hydraulic Motors Start-up and Assembly instructions

 

The oil used in the hydraulic system must be completely clean of impurities before installing the orbital hydraulic motor. Also clean the internal walls of the hydraulic reservoir. The hydraulic system (motor, cylinders, pump, pipes, fittings, and other components) must be completely purged to avoid air in the hydraulic circuit.

 

Check the condition of the connections and their seals, the condition of the rigid/flexible pipes, and the condition of the reservoir. Ensure there are no leaks or air entering the circuit (cavitation). The type of hydraulic oil must be suitable for the hydraulic motor and the hydraulic system itself as well as for the temperature range for which the hydraulic motor and hydraulic system have been designed.

 

Change the filters and add clean hydraulic oil. Reduce the pressure of the safety valves to the minimum. Run the motor without load at minimum speed and with zero (or minimum) pressure for several minutes and gradually increase the rpm and pressure to the level recommended by the machine manufacturer.

 

Avoid axial and radial stresses on the orbital hydraulic motor shaft as much as possible. The diameters of pipes, hoses, fittings, accessories, and other components of the oil flow must be properly dimensioned and in accordance with the maximum oil flow that may be in the hydraulic system. All hoses and piping of the hydraulic circuit must be free of very tight bends. To reduce the level of vibrations, it is recommended to use flexible piping instead of rigid piping.

 

These instructions are general for orbital hydraulic orbital motors. Each motor model may have its corresponding manufacturer's specifications, so in case of doubt, the specific catalog of your hydraulic motor model must be consulted.

 

Maintenance Tips for Orbital Hydraulic Motor
 

Regular inspection: Periodically inspect the motor for signs of wear, leaks, and damage. Check for loose or damaged hoses, fittings, and seals. Early detection of issues can prevent more severe problems and extend the motor's lifespan.

 

Cleanliness: Keep the motor and its surroundings clean. Dirt and debris can cause contamination in the hydraulic system, leading to premature wear and damage. Use appropriate cleaning methods to avoid damaging components.

 

Proper lubrication: Ensure all moving parts are adequately lubricated. Proper lubrication reduces friction, wear, and heat buildup, enhancing the motor's efficiency and longevity. Use the lubricant specified by the manufacturer.

 

Seal and O-ring replacement: Regularly inspect and replace seals and O-rings as needed. These components prevent leaks and maintain the integrity of the hydraulic system. Worn or damaged seals can lead to fluid leaks and reduced performance.

 

Operational checks: Perform routine operational checks to ensure the motor is functioning correctly. Listen for unusual noises, vibrations, or changes in performance. Address any abnormalities immediately to prevent further damage.

 

 

 
FAQ
 

 

Q: What is the procedure to maintain orbital hydraulic motors?

A: For filters with a contamination indicator, replace the filter element when the indicator shows a dirty filter. Check and clean the strainer in the cooling water pipe. Clean the hydraulic power unit and check for possible leaks. Check for possible leaks in the piping connections.

Q: Do orbital hydraulic motors wear out?

A: While the shape, internal geometry and movement cycle vary, all orbital hydraulic motors feature moving parts and seals that can wear out. We advise our customers to pay close attention to the performance of their orbital hydraulic motors and contact us when anything changes.

Q: What is the life expectancy of a orbital hydraulic motor?

A: A pump operating at 70% or less of a duty cycle that spins at 1200 rpm using clean oil is likely to last over 20,000 hours. However, under a 90% load with 1800 rpm and a special purpose oil, that lifespan is reduced to around 10,000 hours.

Q: Why do orbital hydraulic motors fail?

A: Air and water contamination are the leading causes of hydraulic failure, accounting for 80 to 90% of hydraulic failures. Faulty pumps, system breaches or temperature issues often cause both types of contamination.

Q: How does an orbital hydraulic motor work?

A: Orbital Hydraulic Motor: The inner gear ring is fixedly connected with the housing, and the oil entering from the oil port pushes the rotor to rotate around a central point. This kind of slowly rotating rotor drives the output through spline shaft and becomes orbital hydraulic motor.

Q: Do orbital hydraulic motors get hot?

A: Hydraulic pumps generate heat while they run. However, hydraulic fluid temperature should never exceed 180 degrees F (82 degrees C) under normal working conditions. If your hydraulic pump temperature rises above this, then that is a sign that your pump is likely overheating.

Q: What is the most efficient orbital hydraulic motor?

A: There are many types of orbital hydraulic motors, but the most efficient type is a rotary vane motor. This type of motor uses a series of vanes to turn the rotor, which in turn produces mechanical power.

Q: How do you test a orbital hydraulic motor?

A: One of the simplest and most useful tools for testing hydraulic pumps and motors is a pressure gauge. A pressure gauge measures the force exerted by the fluid in the hydraulic system, and can help you determine the operating condition, efficiency, and leakage of the pump or motor.

Q: Are orbital hydraulic motors reliable?

A: Hydraulic designs are reliable, sturdy and are well-suited for a wide range of high-force application. They can produce incredible forces for their size; up to 25 times larger than similarly sized pneumatic designs.

Q: What is an orbital hydraulic motor?

A: Orbital hydraulic motors convert hydraulic energy (pressure, oil flow) into mechanical energy (torque and speed). Orbital hydraulic motors are of fixed displacement high-torque design. For a given oil flow and given pressure the displacement (size of motor) determines the speed and torque.

Q: What are the common applications of orbital hydraulic motors?

A: Orbital hydraulic motors are used in various applications, including agricultural machinery, construction equipment, forestry equipment, material handling systems, conveyor drives, and industrial machinery. They are particularly valued for their ability to deliver high torque at low speeds.

Q: What are the advantages of using an orbital hydraulic motor?

A: Advantages include high power density, smooth and consistent torque output, compact size, versatility in application, long service life, and the ability to operate under high-pressure conditions. They also provide reliable performance in demanding environments.

Q: What are the key features of orbital hydraulic motors?

A: Key features include high torque output, low-speed operation, compact design, high efficiency, durability, and the ability to handle high pressure. They also offer smooth operation and can be used in both bi-directional and uni-directional applications.

Q: What are common signs of wear or damage in an orbital hydraulic motor?

A: Signs include unusual noises, vibrations, leaks, reduced performance, overheating, and visible damage to hoses or fittings. Immediate attention to these signs can prevent further damage and maintain motor efficiency.

Q: What role do seals and O-rings play in the operation of an orbital hydraulic motor?

A: Seals and O-rings prevent hydraulic fluid leaks, maintain pressure, and ensure the efficient operation of the motor. They are essential for maintaining the integrity of the hydraulic system and preventing contamination.

Q: How do you troubleshoot an orbital hydraulic motor that is not performing correctly?

A: Troubleshooting involves checking fluid levels and quality, inspecting for leaks or blockages, verifying correct pressure and flow settings, examining seals and fittings, and listening for unusual noises.

Q: How do you monitor the performance of an orbital hydraulic motor?

A: Performance can be monitored through regular checks of operational parameters such as torque, speed, temperature, and fluid pressure. Using diagnostic tools and sensors can provide real-time data to ensure optimal performance.

As one of the leading orbital hydraulic motor manufacturers in China, we warmly welcome you to buy cheap orbital hydraulic motor made in China here from our factory. All customized products are with high quality and competitive price. For quotation, contact us now.

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