I. Product Overview
The MS05, MSE08, and MS35 series piston hydraulic motors are high-performance hydraulic power components widely used in fields such as construction machinery, building machinery, mining machinery, marine machinery, and agricultural machinery. They convert hydraulic energy into mechanical energy to provide rotational power for various equipment, featuring high efficiency, reliability, and durability.
II. Structural Features
1. Piston Design
• All three series of hydraulic motors adopt a piston-type structure. The pistons move back and forth within the hydraulic cylinder, and through a specific mechanism, the linear motion of the pistons is converted into rotational motion. This design enables the motors to withstand large loads and torques, making them suitable for heavy-duty operating conditions.
• The pistons are typically made of high-strength materials, such as alloy steel, to ensure excellent wear resistance and fatigue resistance under high-pressure and high-load conditions.
2. Valve Distribution Mechanism
• The valve distribution mechanism is one of the key components of piston hydraulic motors. It is responsible for distributing high-pressure hydraulic oil to each piston chamber to achieve the continuous motion of the pistons. The MS05, MSE08, and MS35 series hydraulic motors employ advanced valve distribution technologies, such as axial valve distribution or radial valve distribution, which can precisely control the flow direction and flow rate of the hydraulic oil, improving the working efficiency and stability of the motors.
• The valve distribution plates or valve distribution shafts are usually precisely machined and surface-treated to reduce leakage and wear, extending their service life.
3. Bearing Support
• To ensure the rotational accuracy and stability of the motors, these series of hydraulic motors are equipped with high-quality bearings. The bearings not only need to bear the weight and rotational inertia forces of the motors themselves but also the axial and radial forces generated during the working process.
• Common bearing types include rolling bearings and sliding bearings, which are selected according to different operating conditions and design requirements. Rolling bearings have advantages such as low friction and flexible starting, making them suitable for high-speed and light-load applications. Sliding bearings, on the other hand, have characteristics such as high load-carrying capacity and good impact resistance, making them suitable for heavy-duty and low-speed applications.
4. Sealing Devices
• Good sealing is crucial for the normal operation of hydraulic motors. The MS05, MSE08, and MS35 series hydraulic motors adopt various sealing methods, such as piston ring seals and shaft seals, to prevent hydraulic oil leakage and the entry of foreign impurities into the motor.
• The sealing materials are usually selected from oil-resistant, wear-resistant, and high-temperature-resistant rubber or polytetrafluoroethylene to ensure good sealing performance under different working environments.
III. Performance Parameters
1. Displacement
• The MS05 series hydraulic motors have a relatively small displacement, generally ranging from a few milliliters to tens of milliliters per revolution. They are suitable for applications with low requirements for output torque and power, such as small agricultural machinery and light construction machinery.
• The MSE08 series hydraulic motors have a moderate displacement, usually ranging from tens of milliliters to over a hundred milliliters per revolution. They can meet the requirements of medium-load and medium-power applications, such as some medium-sized building machinery and mining auxiliary equipment.
• The MS35 series hydraulic motors have a large displacement, which can reach several hundred milliliters per revolution. They are suitable for heavy-duty and high-power applications, such as large mining machinery and marine propulsion systems.
2. Rated Pressure and Maximum Pressure
• The rated pressure of these three series of hydraulic motors is generally in the range of 16 - 25MPa, ensuring stable operation under normal working conditions. The maximum pressure varies depending on different models and designs, usually reaching 30 - 35MPa to cope with short-term overload operating conditions.
3. Speed Range
• The MS05 series hydraulic motors have a relatively high speed and can operate within a range of several thousand revolutions per minute, making them suitable for applications requiring high-speed rotation.
• The MSE08 series hydraulic motors have a relatively wide speed range, generally ranging from hundreds to several thousand revolutions per minute, which can adapt to different working requirements.
• Due to their large displacement, the MS35 series hydraulic motors have a relatively low speed, usually ranging from tens to hundreds of revolutions per minute, but they can output large torques.
4. Torque Characteristics
• Piston hydraulic motors have good low-speed stability and can output large torques at low speeds. The MS35 series hydraulic motors perform particularly well in this regard, with large starting torques and low-speed torques, making them suitable for heavy-duty starting and low-speed and high-torque operating conditions.
• As the speed increases, the torque output may decrease to some extent. However, in the design of these three series of hydraulic motors, structural parameters and valve distribution methods are optimized to minimize the change in torque with speed, ensuring torque performance at different speeds.
IV. Application Fields
1. Construction Machinery
• In excavators, loaders, bulldozers, and other construction machinery, the MS05, MSE08, and MS35 series hydraulic motors can be used to drive the slewing mechanisms and traveling mechanisms. For example, in the slewing system of an excavator, the hydraulic motor can provide stable rotational power, enabling the excavator to perform flexible 360-degree slewing operations.
• In the hoisting and luffing mechanisms of cranes, these hydraulic motors also play an important role in achieving the smooth hoisting and luffing of heavy objects.
2. Building Machinery
• Concrete mixer trucks, concrete pump trucks, and other building machinery require hydraulic motors to drive the mixing devices and conveying pumps. The MS series hydraulic motors can provide sufficient power to ensure the normal mixing and conveying of concrete.
• In pile drivers, drilling machines, and other equipment, hydraulic motors can be used to drive the drill bits or pile hammers, achieving efficient pile driving and drilling operations.
3. Mining Machinery
• In mining operations, tunneling machines, coal mining machines, and other equipment require high-power and highly reliable hydraulic motors. The MS35 series hydraulic motors can withstand the harsh operating conditions in mines, such as high dust and high impact, providing stable power output for the equipment.
• The drive systems of mine hoists also often use piston hydraulic motors to ensure the safety and reliability of the hoisting process.
4. Marine Machinery
• In the propulsion systems of ships, hydraulic motors can be used as auxiliary propulsion devices or propulsion equipment under special operating conditions. The MS series hydraulic motors have the characteristics of small size and high power density, making them suitable for installation in the limited space of ships.
• The steering gears and deck machinery of ships also require hydraulic motors to provide power for ship steering and deck equipment operation.
5. Agricultural Machinery
• In combine harvesters, tractors, and other agricultural machinery, hydraulic motors can be used to drive the cutting tables, threshing devices, and traveling systems. The small size and high efficiency of the MS05 series hydraulic motors make them widely used in agricultural machinery, improving agricultural production efficiency.
V. Installation and Maintenance
1. Installation
• When installing the hydraulic motor, ensure that the mounting surface is flat and clean, free of impurities and burrs. Use appropriate bolts and gaskets to firmly mount the motor on the equipment and tighten the bolts to the specified torque.
• When connecting the hydraulic pipelines, pay attention to the cleanliness and sealing of the pipelines. Select appropriate hydraulic fittings and seals to ensure no hydraulic oil leakage. At the same time, avoid excessive bending and stretching of the pipelines to prevent affecting the flow of hydraulic oil and the performance of the motor.
• According to the rotation direction requirements of the motor, correctly connect the inlet and outlet of the hydraulic oil. An incorrect rotation direction may cause damage to the motor or prevent it from working properly.
2. Maintenance
• Regularly check the oil level and quality of the hydraulic oil. The hydraulic oil should be kept clean, free of impurities and moisture. If the hydraulic oil is found to be deteriorated or contaminated, it should be replaced in a timely manner. At the same time, regularly replace the hydraulic oil filter elements according to the equipment's operating conditions and the manufacturer's recommendations.
• Check the sealing condition of the motor. If there is any leakage, replace the seals in a timely manner. Regularly check the lubrication condition of the bearings and add an appropriate amount of grease to ensure the normal operation of the bearings.
• Avoid running the motor under overload or high-temperature conditions for a long time. If the motor temperature is found to be too high, stop the machine and check the causes, such as whether the cooling system is working properly and whether the hydraulic oil is overheated.
• Regularly conduct a visual inspection of the motor to check for any damage or cracks. If any abnormalities are found, repair or replace the motor in a timely manner.
