FAQ

In the initial phase, it is important to gather data on the application, required performance, available space, operating conditions, pressures, flow rates, duty cycles, and installation constraints. A thorough analysis phase allows the project to be set on a more solid foundation and prevents errors in subsequent phases.

Yes, CMH designs and manufactures custom hydraulic systems based on the customer's application requirements. Each solution is developed considering technical parameters, operational context, required performance, and reliability and efficiency objectives.

Yes, CMH Oleodinamica can assist the customer during the start-up and commissioning phases of the system, providing technical support to verify proper system operation and optimize performance based on the application.

Yes, in many cases it is possible to work on components, piping, filtration, the power unit, or the general configuration to improve performance, reliability, and operational continuity. A technical assessment is used specifically to determine whether it is more convenient to optimize the existing system or to redesign it more extensively.

Hydraulics are applied in many fields, including industry, agriculture, mobile machinery, rail, marine, energy, and oil & gas. It is a technology particularly valued when strength, precision, reliability, and operational continuity are required. CMH also works across various application fields and very diverse project portfolios.

A hydraulic system is a system that uses a pressurized fluid, typically hydraulic oil, to transmit energy and generate movement or force. Put simply, the pump pressurizes the fluid, the valves regulate its flow, and the actuators transform the hydraulic energy into mechanical work.

A custom solution is recommended when the application presents specific constraints regarding space, performance, duty cycles, operating pressures, or integration with other systems. In such cases, custom engineering allows for the creation of a system that is better suited to actual use and more efficient in the long term.

The main advantages are high power density, precise motion control, the ability to work in demanding conditions, and great design versatility. A properly sized system also improves efficiency, safety, and long-term reliability.

Hydraulics is the general sector concerning the use of fluids to transmit energy or manage movement. Oleodynamics is a specific application of hydraulics that utilizes pressurized oil to power systems, components, and actuators. In summary, oleodynamics falls under the umbrella of hydraulics but is distinguished by its use of oily fluids and its extensive application in industrial sectors and operating machinery.

A hydraulic circuit works by pressurizing a fluid, typically oil, to transmit energy and generate movement or force. The pump drives the oil through the circuit, valves regulate its pressure, flow rate, and direction, while actuators such as cylinders or motors convert the hydraulic energy into movement. After completing its work, the fluid returns to the reservoir and the cycle begins again.

The main components of a hydraulic system are the reservoir, pump, electric motor, valves, filters, piping, and actuators such as cylinders or hydraulic motors. The reservoir contains the oil, the pump pressurizes the fluid, the valves regulate its flow and direction, and the filters help keep the circuit clean, while the actuators transform hydraulic energy into movement or force. Hydraulic power units typically include elements such as the pump, reservoir, valves, and filter modules.

Many systems may also include control and safety instruments, such as pressure switches, gauges, sensors, and cooling systems, which are useful for monitoring operation and protecting the circuit. Depending on the application, the configuration may change, but these are the fundamental components from which every hydraulic system begins.

A hydraulic circuit works by circulating pressurized oil within the system to transmit energy and generate movement or force. The pump sets the fluid in motion, valves regulate its pressure, flow rate, and direction, while components such as cylinders or hydraulic motors convert hydraulic energy into mechanical work. After performing its function, the oil returns to the tank and the cycle begins again.

The hose must be selected based on operating pressure, temperature, type of fluid, environmental conditions, bending radii, and application characteristics. An incorrect choice can compromise the performance, durability, and safety of the entire system.

The choice of fitting depends on pressure, type of connection, material, working environment, vibrations, and compatibility with the rest of the circuit. Fittings must ensure a reliable connection even in the presence of high pressures and difficult operating conditions.

The hose must be replaced when it shows signs of wear, cracking, bulging, corrosion, deterioration, or loss of sealing. Even in the absence of obvious breakages, it is important to take action when the material is no longer suitable for the working conditions or shows signs of aging.

The most common signs are even minor leaks, crushing, abrasion, swelling, corrosion, loosening, and signs of failure at connection points. Regular inspection of piping and connections is one of the most important preventive activities in hydraulic systems.

Hydraulic hoses are conduits designed to transport pressurized oil within a hydraulic system. They serve to connect the various components of the circuit, such as pumps, valves, power units, cylinders, and motors, allowing the passage of the fluid necessary to transmit energy and generate movement.

They are manufactured to withstand high pressures, mechanical stresses, and even demanding working conditions. Depending on the application, they can be selected with different characteristics in terms of diameter, structure, flexibility, and resistance.

It depends on the state of wear, the cost of the intervention, the criticality of the component, and the impact on system downtime. In general, when a repair does not offer sufficient guarantees of reliability or when the component is already compromised, replacement is often the safest and most efficient choice.

Filters help keep the oil clean and protect the most sensitive components from impurities and contamination. Seals, on the other hand, are essential for ensuring tightness, preventing leaks, and preserving circuit efficiency over time.

The selection of components must begin with the application's specifications: pressure, flow rate, duty cycles, environmental conditions, fluid compatibility, and performance objectives. It is essential that every component is consistent with the rest of the system to avoid inefficiencies or premature wear.

The hydraulic pump converts mechanical energy into hydraulic energy, setting the fluid in motion within the circuit. The hydraulic motor performs the opposite process: it converts the hydraulic energy of the fluid into mechanical energy, generating motion. In summary, the pump powers the system, while the motor uses the fluid's energy to drive a mechanical component.

Yes, compatibility between components is essential to ensure the correct operation, safety, and durability of the system. Pressure, flow rate, connections, materials, the fluid used, and operating conditions must be evaluated as a whole.

Hydraulic cylinders are used to transform the energy of pressurized oil into linear motion and force. They are utilized in hydraulic systems to perform operations such as pushing, lifting, clamping, and moving loads or mechanical components.

Single-acting hydraulic cylinders are cylinders in which the hydraulic thrust acts in only one direction. The piston return occurs instead via an internal spring, the weight of the load, or another external force, rather than through oil pressure on both sides of the piston. In fact, Parker defines single-acting as a configuration in which the useful force is developed in only one direction and the return occurs by means of a spring or an external force.

A hydraulic pilot-operated check valve is used to hold an actuator, such as a cylinder, in place by preventing oil flow in one direction until a release command is received. In practice, it allows free flow in one direction and blocks it in the opposite direction, opening the passage only when pilot pressure from the other branch of the circuit is applied.

Its primary function is therefore to prevent unintended load movements and maintain the actuator's position even in the event of pressure drops or system shutdown. For this reason, it is mainly used when it is necessary to ensure safety, sealing, and load stability.

Hydraulic valves are used to control the flow of oil within the circuit, regulating the pressure, flow rate, and direction of the fluid based on the system's requirements. In practice, they allow for the management of various components, protect the system from overpressure, and control the movement of hydraulic cylinders and motors.

Hydraulic components are the elements that make up a hydraulic system and enable its proper operation. This category includes, for example, pumps, valves, cylinders, hydraulic motors, filters, hoses, fittings, seals, and other devices necessary to generate, control, and transmit energy through pressurized oil.

In a hydraulic system, each component performs a specific function and contributes to ensuring the efficiency, safety, and reliability of the system.

Hydraulic manifolds are metal elements designed to integrate fluid passages and control component housings within a single body. They serve to distribute and manage oil in the circuit in a compact, organized, and efficient manner.

The main difference concerns dimensions, available power, configuration, and intended use. Traditional power units are suitable for more structured applications, while mini power units and micro power units are designed for reduced spaces and more compact systems, while still maintaining good performance in relation to the application.

Incorrect sizing can cause loss of efficiency, higher consumption, overheating, premature component wear, operational instability, and increased machine downtime. In some cases, it can also compromise the safety and lifespan of the system.

Hydraulic power units are units that generate and manage hydraulic energy within a system. Depending on the configuration, they are composed of elements such as a motor, pump, reservoir, valves, and filters, and serve to supply the system with the pressure and flow rate necessary for its operation.

The choice depends on several factors: required pressure, flow rate, duty cycles, installation environment, available space, and level of customization needed. For this reason, it is important to start with an accurate technical analysis to avoid undersizing or solutions unsuitable for the actual application.

A hydraulic system is used to transmit energy and generate force or movement through a pressurized fluid. It is utilized when it is necessary to move, lift, push, lock, or control loads and mechanical components with precision, reliability, and operational continuity.

The hydraulic power unit serves to power the hydraulic system, supplying the circuit with the pressurized fluid necessary for the operation of cylinders, valves, motors, and other components. In practice, it represents the heart of the system, as it manages the production and control of hydraulic energy.