When choosing the hydraulic final drive motors for the excavators, the manufacturer would like to know various specifications. Now let’s see the details.
Performance of Hydraulic Final Drive Motors
Enough Torque
The hydraulic final drive motor needs sufficient torque to drive the excavator’s working devices, such as the bucket, dipper rod, and boom. For large excavators, higher torque is required when digging hard materials or performing heavy-load operations. For example, when digging rocks, insufficient torque will lead to weak digging and affect work efficiency. The size of the torque is usually related to the displacement and working pressure of the hydraulic final drive motor. The larger the displacement and the higher the pressure, the stronger the torque output capacity.
WEITAI hydraulic final drive motors have a wide range of drive torque from thousands to tens of thousands of Nm. So our products can meet almost all the requirements of different models and tonnage excavators.
Speed range
The speed of the hydraulic final drive motor should be adapted to the needs of different working conditions of the excavator. During excavation, the working device moves relatively slowly, requiring the hydraulic motor to have a low and stable speed for precise operation. In non-excavation conditions such as equipment transfer, it may need a higher speed to move quickly. The appropriate speed range ensures that the excavator can operate efficiently in various scenarios, such as fine-leveling and fast-loading operations.
WEITAI hydraulic final drive motors are integrated with a gearbox which can run at a speed range of 35-75 rpm. It provides precise control to work effectively and makes the excavator move fast.
Starting performance
Good starting performance is key. The hydraulic motor needs to be able to start smoothly under different load conditions. Especially when excavating heavy materials, the starting torque must be large enough to ensure that the working device can respond quickly to operating instructions. If the starting performance is poor, the working device may start slowly or even fail to start, affecting the normal use of the excavator.
Efficiency
Includes volumetric efficiency and mechanical efficiency. High volumetric efficiency means less leakage inside the hydraulic motor and can more effectively convert hydraulic energy into mechanical energy. High mechanical efficiency means that less energy is lost due to mechanical losses such as friction during the energy conversion process. Efficient hydraulic motors can reduce energy loss, reduce fuel consumption, and improve the overall performance and economy of the excavator. For example, in long-term excavation operations, high-efficiency hydraulic motors can save users considerable fuel costs.
Reliability of Hydraulic Final Drive Motors
Durability
The working environment of excavators is usually harsh, and hydraulic motors need to be able to withstand long-term high-load work, frequent starting and stopping, and various complex working conditions such as dust, mud, and vibration. Hydraulic motors with good durability can reduce the frequency of maintenance and replacement and reduce the downtime of equipment. For example, the durability of hydraulic motors of excavators operating in harsh environments such as mines is directly related to the service life and production efficiency of the equipment.
Anti-pollution ability
Since impurities will inevitably enter the hydraulic system in the working environment of the excavator, the hydraulic motor needs to have strong anti-pollution ability. It should be able to work normally in a hydraulic oil environment containing certain particulate impurities without causing wear or blockage of internal parts due to the entry of impurities. For example, a hydraulic motor with good sealing performance can effectively prevent impurities from entering the key working area and ensure its stable operation.
Compatibility of Hydraulic Final Drive Motors
Matching with the hydraulic system
The flow and pressure characteristics of the hydraulic motor should match the hydraulic system of the excavator. It should be able to work normally within the pressure and flow range set by the system and be able to work in conjunction with other hydraulic components such as hydraulic pumps and control valves. If the hydraulic motor does not match the hydraulic system, it may cause problems such as excessive or low system pressure and unstable flow, affecting the performance of the excavator.
Installation size and interface compatibility
The dimensions and installation interface of the hydraulic motor must meet the design requirements of the excavator. It should be easy to install at the corresponding position of the excavator, and the connection method of the interface (such as flange connection, shaft connection, etc.) should match other components. This ensures that the hydraulic motor will not be difficult to install or interfere with other components during installation.
Cost of Hydraulic Final Drive Motors
Procurement cost
The manufacturer needs to consider whether the price of the hydraulic motor is within the budget. The prices of hydraulic motors of different brands, models, and performances vary greatly. On the premise of meeting the performance requirements of the excavator, choosing a reasonably priced hydraulic motor can reduce production costs. However, low price cannot be the only selection criterion, and other factors such as quality and after-sales need to be considered comprehensively.
Maintenance cost
Hydraulic motors that are easy to maintain and repair can reduce the cost of use. This includes whether there are easily accessible repair parts, the complexity of the repair, and the time required for repair. If the hydraulic motor is difficult to repair and the parts are difficult to supply, it will lead to longer downtime and higher repair costs when it fails.
At Last
As a manufacturer of hydraulic final drive motors, WEITAI has more than 20 years of experience in serving customers. We can meet the customized requirements of different customers at the lowest cost. Welcome to contact us should you have any questions.
