High Quality Hydraulic Motor
A radial piston motor uses compressed hydraulic fluid to generate mechanical rotational energy. This motor's traditional design features a stationary core called the directional valve that holds two channels for fluid inflow and delivery. The valve rotor contains multiple radial bores that house free-moving pistons. Pistons travel in opposite directions within these bores, with tension from the stator facilitating rotation of the rotor and pistons. This causes the motor's output shaft to spin and release kinetic energy.
- Product Introduction
Shandong Heqi Hydraulic Machinery Equipment Co., Ltd., formerly known as Jining Gongcheng Hydraulic Machinery Factory, was founded in 1999. Since its establishment, it has been supplying hydraulic parts for Eaton Company. The quality index of its products has always been among the best among all suppliers of Eaton Company, and it has been awarded the honor of excellent quality supplier for many years.
Why Choose Us
Quick Transportation
We cooperate with professional sea shipping, air and logistics companies to provide you with the best transportation solution.
Quality Assurance
Each batch of goods has a corresponding quality inspection report to solve your concerns about product quality.
Quality service
Customer service will update you the logistics information of the goods in time to ensure that the goods are delivered in time.
Production Equipment
CNC lathe, CNC machining center, CNC milling machine, CNC surface grinder, CNC cylindrical grinder, CNC hobbing machine, CNC grinding machine, CNC forming grinder, broaching machine, etc.
OMM hydraulic motors are a type of hydraulic motor that use a axial distribution structure and a columnar stator and rotor design. These motors are known for their high mechanical efficiency and are widely used in various industrial applications.
BMM orbital hydraulic motor, a type of high-performance hydraulic component, is a widely adopted power device in engineering machinery and ship industry. With its excellent performance and multiple installation forms, it has brought great convenience to various industrial fields.
The hydraulic motor is the executive element of the hydraulic system, which converts the hydraulic energy provided by the hydraulic pump into the mechanical energy (torque and speed) of its output shaft. Liquid is a medium that transmits force and motion.
BMP hydraulic rail motor is a kind of high performance hydraulic motor, which is widely used in the power transmission system of various mechanical equipment. This motor uses a double rolling bearing design, has a greater lateral load capacity, can adapt to a variety of working conditions, and has a very good performance.
The Type BMM hydraulic motor is an advanced hydraulic transmission element with the latest dynamic seal design and excellent high back pressure carrying capacity. This kind of motor is widely used in construction machinery, agricultural machinery, ships, petroleum equipment, mining machinery and other fields.
The BM2 series hydraulic motor is a versatile and efficient piece of equipment that is widely used in various engineering machinery applications. This hydraulic motor is especially popular in the mining, petroleum, and small lifting industries due to its reliable performance and durability.
Hydraulic wheel motors are an important component of hydraulic drive systems. These wheel motors are commonly used in heavy machinery, such as agricultural equipment, construction vehicles, and mining equipment. They are responsible for powering the wheels, allowing the machinery to move forward, backward, or turn.
A hydraulic motor is a type of hydraulic actuator that converts hydraulic pressure into mechanical rotation power. A hydraulic motor operates by forcing hydraulic fluid through the motor's chamber to drive the output shaft or rotor. There are several types of hydraulic motors, and one such type is a rotary hydraulic motor.
Hydraulic motor is a mechanical device that uses hydraulic energy to rotate. It is usually provided by a hydraulic pump hydraulic energy, through the control valve door hydraulic energy transfer to the hydraulic motor, so as to achieve the rotation of the device.
A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement (rotation). The hydraulic motor is the rotary counterpart of the hydraulic cylinder as a linear actuator. The role of a hydraulic motor is to provide the force and motion needed to move an external load. They can generate substantial power and are typically used in any application which requires constant speed variations with a slow or quick rotary movement.
Benefits of High Quality Hydraulic Motor
Superior Power Density
One of the most significant advantages of hydraulic motors is their exceptional power density. Power density refers to the amount of power that can be generated relative to the size and weight of the motor. Hydraulic motors are designed to deliver high power output in a compact package, making them ideal for applications where space is at a premium.
Exceptional Durability and Reliability
Hydraulic components are built to last, and their motors are no exception. They are engineered to withstand tough operating conditions, including extreme temperatures, high pressures and demanding duty cycles. This exceptional durability translates to reduced downtime, lower maintenance costs, and a longer service life for the machinery.
Flexible Speed and Torque Control
Hydraulic motors offer remarkable flexibility in terms of speed and torque control. This adaptability is crucial in many industrial applications where precise control over machine movement is essential. The speed of a hydraulic motor can be easily adjusted by controlling the flow rate of hydraulic fluid.
Easy Integration and Maintenance
Hydraulic motors with ease of integration and maintenance in mind. Motors often feature industry standard mounting configurations, making them easy to incorporate into existing or new machine designs. These motors are designed to work seamlessly with other hydraulic components, ensuring optimal system performance.
Hydraulic motors are essentially mechanical actuators that work to convert fluid power into the mechanical energy needed to power a machine. Fluid power is the driving force behind all hydraulic operations, including the way motors work. Hydraulic motors use pressurised fluids from the hydraulic pump to generate force such as angular displacement and torque.
As the fluid is carried to the hydraulic motor, it pushes on the gears, vanes or pistons of the motor and as a result, turns the motor output shaft. The rotating shaft uses flow and hydraulic pressure to create rotation torque, therefore generating the power and force needed to move the external load. Then the cycle repeats. The speed at which a hydraulic motor operates is dictated by the amount of oil and pressure supplied by the pump.
To oversimplify it, hydraulic motors allows for essentially full variability on speed or power delivered by varying pressure in the system or some other means. This feature also means that if the motor is taxed heavily it can provide far more torque by allowing it to speed output down without having to slow input speed effectively gearing down the input and output ratio, meaning exponentially more torque depending on the design verses a direct drive (mechanical) system at the expense of speed.
Even multiple geared systems are little comparison to hydraulic systems for lower speed applications in terms of usable torque. Automatic transmissions do this type of connection via a torque converter, when you press the throttle the pressure builds until it transfers enough power to move the vehicle. This can multiply the torque high enough to break traction even if the engine isnt remarkably powerful.
Common Types of Hydraulic Motor
Gear Hydraulic Motors
Gear hydraulic motors feature an idler gear and a driving gear connected to the output shaft. An inlet port allows high-pressure oil to flow into the motor from one side, circling between the outside edges of both gears and the motor housing. The gears mesh so closely so that the oil does not leak back into the inlet. Because of their symmetrical internal construction, balanced exterior, and similarly sized inlet and output ports, these motors can operate in either a negative or positive direction. They incorporate more teeth than the pump to minimize torque ripple and use rolling bearings to lessen frictional torque at startup.
Vane Hydraulic Motors
Vane hydraulic motors are rotary actuators that utilize pressurized fluid to rotate a rotor fitted with vanes that may be moved into and out of the motor's enclosure. Because of the resulting imbalanced force, the rotor can only spin in one direction. A perfectly milled lip between the motor casing and the vane prevents dust and debris from getting inside, and creates a tight seal that reduces wear and metal-on-metal contact.
Axial-Piston Motors
The axial-piston motor is used in equipment and activities that require dynamic motion. To generate torque or rotational power, these motors rely on a piston that moves axially as it is propelled by pressurized oil. A swash plate inside the cylinder acts as a path for the piston, and the oil is pushed into the cylinder via an opening in an oil distribution panel.
Radial Piston Motors
A radial piston motor uses compressed hydraulic fluid to generate mechanical rotational energy. This motor's traditional design features a stationary core called the directional valve that holds two channels for fluid inflow and delivery. The valve rotor contains multiple radial bores that house free-moving pistons. Pistons travel in opposite directions within these bores, with tension from the stator facilitating rotation of the rotor and pistons. This causes the motor's output shaft to spin and release kinetic energy.
Nomenclature Used in Hydraulic Motors
Motor Displacement
Motor displacement denotes the volume of fluid required for one complete revolution of the motor's output shaft. Common units of measurement include cubic inches and cubic centimetres per revolution. Depending on the motor type and application, displacement can be fixed or variable. Fixed displacement motors maintain constant torque, while variable displacement motors allow for adjustable speed by controlling input flow.
Torque Output
Torque output is expressed in foot-pounds or inch-pounds and is determined by system pressure and motor displacement. Manufacturers provide torque ratings to assess specific pressure drops in a motor.
Starting Torque
Starting torque signifies a hydraulic motor's capability to initiate motion in a load. It quantifies the torque a motor can generate to set a load in motion, often expressed as a fraction or percentage of the theoretical torque. Typically, the starting torque for piston, vane, and common gear motors falls within the range of 70% to 80% of the theoretical value.
Breakaway Torque
Breakaway torque measures the force required to set a stationary load in motion. Initiating motion demands more torque than sustaining it.
Running Torque
Running torque relates to the torque associated with either the motor or the motor's load. Concerning the load, it represents the torque required to maintain rotation. With reference to the motor, it reflects the actual torque generated to sustain load rotation. Running torque is typically around 90% of the theoretical value for common vane, piston, and gear motors.
Mechanical Efficiency
Mechanical efficiency assesses the effectiveness of a mechanical system, often utilising torque as a key variable. In hydraulic motors, it signifies the ratio between the actual torque delivered and the theoretical torque.
Hydraulic Efficiency
Hydraulic efficiency measures the effectiveness of a hydraulic motor system.
Slippage in Motors
Slippage refers to fluid passing through a motor's internal components without performing the intended work.
Type of Motor: There are several types of hydraulic motors, including gear, vane, and piston motors. Each type has unique features and advantages, and the choice depends on the specific requirements of the application.
Power Requirements: The power requirements of the application, including the required speed and torque, should be considered when selecting a hydraulic motor. It is important to choose a motor that can provide the required power without being over or undersized.
Operating Conditions: The operating conditions of the application, including the temperature, pressure, and environment, should be considered when selecting a hydraulic motor. The motor should be able to operate safely and reliably under the specific conditions of the application.
Efficiency: The efficiency of the hydraulic motor should be considered, as it can affect the operating costs and energy consumption of the application. It is important to choose a motor that is efficient and can provide the required power with minimal energy consumption.
Control Options: The control options for the hydraulic motor should be considered, as they can affect the precision and accuracy of the driven equipment. The motor should be compatible with the required control options, such as flow rate and pressure control, and electronic controls.
Maintenance Requirements: The maintenance requirements of the hydraulic motor should be considered, including the frequency of maintenance, the type of maintenance required, and the availability of spare parts. The motor should be easy to maintain and repair to ensure reliable operation and minimize downtime.
Cost: The cost of the hydraulic motor should be considered, including the initial cost and the operating costs over the lifespan of the motor. It is important to choose a motor that provides the required performance at a reasonable cost.
Application of Hydraulic Motor
Construction
Hydraulic motors power heavy machinery such as excavators, bulldozers, and cranes in the construction industry. Their robustness and ability to generate high torque make them ideal for handling demanding tasks on construction sites.
Agriculture
In agriculture, hydraulic motors drive equipment such as tractors, harvesters, and irrigation systems. They enable precise control of machinery functions, allowing farmers to optimize productivity and efficiency in crop cultivation and management.
Manufacturing
Hydraulic motors are integral to manufacturing processes, powering machinery for metalworking, plastic molding, and assembly operations. Their consistent performance and ability to handle varying loads contribute to streamlined production processes in manufacturing facilities.
Aerospace
Hydraulic motors play a critical role in aircraft systems, powering components such as landing gear, flight control surfaces, and cargo handling mechanisms. Their reliability and durability are essential for ensuring the safe operation of aircraft in demanding aerospace environments.
Motor oil leakage
● Shaft end oil leakage: Due to the constant friction between the oil seal and the output shaft during daily use of the motor, it is inevitable to cause wear on the contact surface between the oil seal and the shaft. Exceeding a certain limit will cause the oil seal to lose its sealing effect, leading to oil leakage. At this point, the oil seal needs to be replaced. If the output shaft is severely worn, the output shaft needs to be replaced at the same time.
● Oil leakage at the cover: The "O" ring under the cover is crushed or aged, causing it to lose its sealing effect. The probability of this situation occurring is very low, and if it occurs, only the "O" ring needs to be replaced.
● Motor gap oil leakage: The "O" ring located 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 damaged. If this occurs, simply replace the "O" ring.
The motor runs weak
● Loose stator body pairing: Due to the friction between various components in the motor during operation, if the hydraulic oil quality in the system is too poor, it will accelerate the wear of internal components in the motor. When the wear of the needle column in the stator body exceeds a certain limit, it will cause the internal clearance of the stator body pairing to increase, which cannot achieve normal oil sealing effect and will cause excessive internal leakage in the motor. The symptom displayed is that the motor operates normally without load, but the sound may be slightly louder than normal, and it may become weak or run slowly under load. At this point, it is necessary to replace the needle pillar as soon as possible.
● Wear between the output shaft and the housing: The main reason for this fault is that the hydraulic oil is impure and contains impurities, causing grooves to be worn out inside the housing, leading to increased internal leakage in the motor and resulting in motor weakness. The solution is to replace the housing or complete the pairing.
The motor does not rotate or crawls
● The clearance between the mating planes of the stator body is too small: As mentioned earlier, the clearance between the stator body planes of the motor should be roughly controlled within the range of 0.03mm-0.04mm. If large metal particles in the system oil mix into the interior of the motor, it will seriously roughen the inner wall cavity and spindle surface of the motor, causing deformation of the matching clearance or even local clearance less than 0.03, which may cause the cycloid wheel to bite the front or rear side plate, At this point, it will be found that the motor runs unevenly or one card at a time, and in severe cases, the motor may directly bite and cause it to not rotate. Treatment method: Grind the plane of the cycloid wheel to control the clearance between it and the stator body within the standard range. In severe cases, replace the output shaft or housing.
● Tightening the fastening screws too tightly: Tightening the fastening screws too tightly can cause the flat surface of the parts to fit too tightly, resulting in poor motor operation or direct jamming. The solution is to tighten the screws within the specified torque range.
Preventative Maintenance Tips for Hydraulic Motors
Test Pressure and Flow
Pressure and flow form the basis of hydraulic operation. Regular testing of these measures gives a good indication of the overall health of a hydraulic motor. Changes in either level typically indicate a deeper problem that could range from leaky seals to contaminated hydraulic fluid.
Sample Fluid
Take samples of the hydraulic fluid or oil from several points on the motor. Taking a single sample may not show contamination that occurs further in the system. Compare the samples to each other for viscosity and integrity. Notice if the fluid appears to thicken, thin or become contaminated anywhere in the system.
Clean the Reservoir, Check Fluid Levels and Mark Normal Values
Mark the normal fluid levels on the reservoirs and label each reservoir with the type of fluid to use. Mixing or using the wrong type of fluid can contaminate the system and lead to damage. Empty the fluid reservoir, clean it and refill with fresh fluid on a schedule dictated by the manufacturer's recommendations. Look for contaminated fluid and flush the entire system if the hydraulic liquid appears dirty.
Clean and Inspect Components of Fluid Systems
Remove and clean off vital components of the hydraulic system including filters, couplers, gauges and other parts. Replace any of these components that appear damaged or have excessive buildup on them. Also, check that each junction of the system moves as expected.
Test Actuators and Valves
Regular maintenance should include draining and flushing of the valves in a hydraulic system. After cleaning these points, test the valves and actuators during operation. Monitor for any signs of inefficient function, which could indicate a growing problem. Repair the issue to restore full operation of the hydraulic motor before it experiences a complete breakdown.
FAQ
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