Pneumatics & Hydraulics

Verified by Mel Sykes, Industrial Supply Chain Specialist - April 2026

Specification	Details
Pneumatic types	Cylinders, actuators, valves, FRL units, fittings, tubing
Hydraulic types	Cylinders, pumps, motors, valves, hoses, fittings
Standards	ISO 6431 (pneumatic cylinders), ISO 4401 (hydraulic valves), SAE J517 (hose)
Pressure range	Pneumatic: 0-10 bar typical. Hydraulic: 0-700 bar typical

## What are Pneumatics & Hydraulics? Pneumatics & Hydraulics refer to systems that use compressed air and pressurized liquid to transmit energy for motion control. They're used in manufacturing, construction, and other industries where precise movement and force are required. Pneumatics & Hydraulics encompass a range of equipment designed to convert fluid power into mechanical energy. Pneumatic systems typically operate at pressures up to 10 bar and use compressed air, while hydraulic systems can reach up to 700 bar using oil-based fluids. These systems include cylinders, actuators, valves, pumps, motors, hoses, and fittings, each serving specific functions in machinery and equipment. ## Types of Pneumatics & Hydraulics ### Pneumatic Components - **Cylinders:** Linear motion devices driven by compressed air, available in single or double rod configurations. - **Actuators:** Rotational or linear movements generated from pneumatic pressure. - **Valves:** Control the direction and flow of air to ensure precise movement control. - **FRL Units (Filter-Regulator-Lubricator):** Clean, regulate, and lubricate compressed air for efficient performance. - **Fittings:** Connect components securely with minimal loss of air pressure. - **Tubing:** Flexible or rigid tubing that carries pressurized air between system parts. ### Hydraulic Components - **Cylinders:** Generate linear motion using hydraulic fluid under high pressure. - **Pumps:** Supply the hydraulic fluid to the system, maintaining consistent flow and pressure. - **Motors:** Convert hydraulic energy into rotational force for machinery operation. - **Valves:** Regulate hydraulic fluid direction, speed, and volume in complex systems. - **Hoses:** Flexible conduits that transport pressurized fluid between components. - **Fittings:** Connect hoses and pipes securely to prevent leaks. ## Materials and Specifications Pneumatics & Hydraulics use various materials and adhere to international standards for durability and performance. ### Pneumatic Components - **Cylinders (ISO 6431):** Made from carbon steel (EN8) or stainless steel (A2-70), with seals in nitrile rubber. - **Fittings:** Often made of brass (CuZn39Pb3) for corrosion resistance, or aluminum (AlMgSi1) for lightweight applications. ### Hydraulic Components - **Hoses (SAE J517):** Constructed using materials like thermoplastic (PE), rubber (NR), and wire braiding. - **Valves (ISO 4401):** Fabricated from brass (CuZn39Pb3) or stainless steel (A2-70) for high-pressure environments. ## How to Choose the Right Pneumatics & Hydraulics Selecting appropriate components involves assessing system requirements, environmental conditions, and maintenance needs. Consider factors like operating pressure range, temperature limits, fluid type, and desired motion control accuracy. ### Key Criteria - **Operating Pressure:** Ensure components can handle pressures within your system's range. - **Material Compatibility:** Choose materials that resist corrosion and wear under specific conditions. - **Seal Performance:** Select seals compatible with the hydraulic or pneumatic fluid to prevent leaks. - **Maintenance Ease:** Opt for systems with easy-to-replace parts and simple servicing procedures. ## UK Suppliers MLC lists verified suppliers from Companies House, offering a range of Pneumatics & Hydraulics components. Suppliers adhere to industry standards like ISO 9001 and comply with local regulations, ensuring high-quality products and reliable service. MLC members include leading trade bodies such as the British Industrial Automation Forum (BIAFD) and the British Pump Manufacturers' Association (BPMA). ## Common Applications Pneumatics & Hydraulics find wide use in diverse industries due to their reliability and efficiency. ### Manufacturing - **Assembly Lines:** Pneumatic actuators for precise positioning tasks. - **Material Handling:** Hydraulic lifts for heavy loads in warehouses. ### Construction - **Excavators:** Hydraulic cylinders for digging and lifting operations. - **Pavers:** Pneumatic tools for compacting soil. ### Automotive Industry - **Car Assembly:** Hydraulics for robotic welding systems. - **Braking Systems:** Pneumatics for air brake control mechanisms. By understanding the specific needs of each application, engineers can select suitable components that enhance productivity and safety.