Advantages and disadvantages of mobile and industrial hydraulic pumps

Dec 23rd,2024 188 Views

The mobile hydraulic field will pay more attention to the improvement of power density and efficiency, while the industrial hydraulic field will continue to pursue high reliability, low noise and long-term stable operation. Although the design concepts and application scenarios of the two are different, their core goal is always to achieve efficient power transmission and execution through hydraulic technology.

1. Weight and size restrictions

For most mobile machinery, the weight of the whole machine is an important design consideration. In order to ensure that the machinery has sufficient strength and service life, the simplest way is to use thicker steel. However, mobile equipment needs to meet weight restrictions, and equipment of different tonnages must also comply with corresponding regulatory standards. Therefore, manufacturers must reduce the weight of the machine as much as possible while ensuring strength.

Weight reduction solutions include:

Use advanced design software for structural optimization.

Use high-strength and lightweight materials to replace traditional steel.

Replace some mechanical or hydraulic components with electrified components.

Compared with industrial machinery, mobile hydraulic systems have more stringent requirements on weight and size when designing.

2. Power density difference

Power density is an important indicator for measuring the performance of hydraulic actuators. It refers to the ratio of power output to device size. The power density of hydraulic systems is much higher than other transmission methods, which is one of the reasons why hydraulic technology is widely used in mobile machinery.

For example, the operating pressure of the wheel drive motor of a bulldozer can reach 400 bar, which is twice the pressure level of the industrial hydraulic standard. A 300 horsepower (about 220 kilowatts) hydraulic motor weighs 120 kilograms, while an industrial electric motor with the same power may weigh up to 1,360 kilograms, which is a big difference.

In addition, the bevel axis piston motor performs particularly well in terms of high power density. For example, the Rexroth A2F5 motor weighs 2.5 kilograms at an output of 35 horsepower (about 26 kilowatts), which further highlights the advantages of hydraulic technology in mobile machinery.

The design of high power density not only reduces the weight of the machine, but also helps to meet emission standards, while reducing the size of the engine or motor and reducing manufacturing costs.

3. Cost control requirements

The mobile hydraulic machinery market is extremely competitive, and manufacturers are under strict cost control pressure. From key components such as hydraulic pumps to simple bolts, the cost of all components has been compressed to a low level. Therefore, hydraulic components on mobile machinery often have a high cost-effectiveness.

However, cost reduction does not mean giving up quality. In high-intensity, critical applications, reliability is still the primary criterion. Therefore, manufacturers will seek a balance between cost and quality to ensure stable operation of the equipment.

In contrast, industrial hydraulic systems have higher cost freedom. Industrial equipment usually has customized hydraulic power units and more flexible budgets. In addition, industrial machinery is also more free in spatial layout, and the installation location of drive units and actuators is often unrestricted.

4. Difference in working hours

Working hours are another major difference between mobile hydraulics and industrial hydraulic systems. The working hours of mobile machinery are usually limited. For example, an excavator generally works for 8 to 12 hours a day, and equipment maintenance and rest are carried out at night.

Industrial machinery is different. For example, injection molding machines usually need to run 24 hours a day and stop for overhaul or upgrade throughout the year. This continuous and high-intensity working characteristic requires industrial hydraulic systems to have extremely high stability and reliability to ensure the continuity of production.

5. Differences in working environment

Mobile machinery needs to adapt to changing working environments, including extreme temperature, humidity, dust and impact. Equipment needs to maintain good performance under various harsh conditions. Industrial machinery usually operates in a fixed indoor environment, where the environmental conditions are relatively stable and the protection requirements for equipment are relatively low.

6. Design requirements and application requirements

Mobile hydraulic system: In the field of mobile applications, the design focus is on improving power density, optimizing efficiency, and reducing equipment weight, thereby improving the equipment's operating capacity and fuel economy.

Industrial hydraulic system: In the industrial field, the design goals are more focused on high reliability, low noise and high efficiency to meet the requirements of long-term stable operation. In addition, the maintenance cycle of industrial systems is usually longer, and the durability of equipment is more critical.

Mobile hydraulic system: There are obvious differences in design and application from industrial hydraulic systems, mainly reflected in weight and size restrictions, power density, cost control, working hours and environmental adaptability. With the continuous advancement of technology, these two fields will continue to move forward in their respective development directions.

Choose DIG-DOG for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!

How to prevent forklift mast deformation

The world's smallest crawler excavator

Company News

Industry dynamics

Advantages and disadvantages of mobile and industrial hydraulic pumps

CONTACT US