The misconception that "hydraulic cylinders are more reliable" may be due to the frequent reliability issues of the previous generation of electric cylinders, but electric cylinders have benefited greatly from the improvement in reliability of electronic products. Compared to hydraulic products of the same specification, electric cylinders are simpler, containing only a motor, gearbox, screw or ball screw, and a commonly configured clutch. Hydraulic systems, on the other hand, include many components, such as accumulators, hydraulic pumps, DC motors, motor relays, solenoid valves, check valves, hydraulic cylinders, and button control stations. Due to the high reliability of electronic technology and the least possible failure points, the reliability of electric cylinders has greatly improved in recent years and can be used in most applications, with a longer lifespan than the devices they are installed in.
Servo press cylinder provides truly maintenance-free operation and will not fail due to lack of maintenance. The maintenance of hydraulic systems requires regular replacement of hydraulic oil and filters to ensure the system has sufficient hydraulic oil. In harsh construction vehicle applications, hydraulic oil is often contaminated. Contaminated hydraulic oil can cause a chain reaction when it is moved within the system, potentially damaging multiple components, each of which requires maintenance or replacement. In multi-axis motion controlled by a single hydraulic system, a small problem can affect multiple aspects of equipment operation. For example, an overloaded axial movement may lower circuit pressure and affect the work of other components. Another issue to consider is that when a hydraulic system loses pressure due to a pipeline rupture, it cannot be manually driven to perform the affected axial movement.
The perception that " a fast electric cylinder is more expensive than hydraulic cylinders" is due to the need to add a motor, screw, and gearbox to increase axial movement, while only a hydraulic cylinder needs to be added to the hydraulic system. However, the hydraulic cylinder is only a component of the hydraulic system that completes the axial movement. Hydraulic valves, hoses, and filters need to be added to the system, and in many cases, the existing hydraulic pump does not have enough capacity to support the new axial movement. Of course, as a reliable and professional company, we also have electric cylinders for sale if you want.
The economy of the servo electric cylinder largely depends on the number of axes in a specific hydraulic system. When adding a hydraulic pump to deal with a new axis movement, using electric cylinders is usually more economical. As a general economic rule, when hydraulic systems are used to control one, two, or three axes of movement, replacing them with electric cylinders is cheaper.
In agricultural applications, another factor that affects the relative cost of electric cylinders and hydraulic cylinders is the number of available hydraulic oil ports. Each accessory requires an oil port, and adding an additional oil port is expensive due to the need to add hydraulic valves, hoses, pipes and fittings, not to mention the cost of increasing pump capacity. Electric cylinders can add accessories without occupying oil ports. Electric cylinders can also be beneficial for central axial movements that are far from the hydraulic pump, as using electric cylinders can eliminate the material and labor costs of piping between the hydraulic pump and the hydraulic cylinder.
The operating cost of the electric cylinder is usually much lower than that of hydraulic systems, as electric cylinders only require energy when moving objects, while even the most efficient hydraulic systems have continuous energy loss. The continuity of electric cylinders also makes their installation costs much lower than those of hydraulic systems. In addition, electric cylinders do not require maintenance, while hydraulic systems require regular oil and filter changes.
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